Engine Controls and Fuel - 6.2l - DTC p0315 Through p1258 Chevrolet Camaro V

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Wiring Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Special Tools

J 35616 GM Approved Terminal Test Kit
For equivalent regional tools, refer to «Special Tools»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-36l-special-tools-and-equipment) .

Circuit/System Verification

Engine at operating temperature, observe DTC information with a scan tool. DTC P0324, P0325, P0326, P0327, P0328, P0330, P0332, or P0333 should not set.
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Note. Perform the Diagnostic System Check - Vehicle prior to using these diagnostic procedures. If an engine mechanical noise can be heard, repair the condition before proceeding with this diagnostic. Refer to Symptoms - Engine Mechanical .

Note. If DTC P0325, P0326, P0327, P0328, P0330, P0332, or P0333 are also set, diagnose those DTCs first.

DTC P0324 indicates an internal control module circuitry failure. Replace the ECM.

P0325, P0326, P0327, P0328, P0330, P0332, P0333

Ignition OFF, disconnect the affected B68 KS.
Ignition OFF. Connect a DMM to both KS signal circuits, terminals A and B, at the affected B68 KS. Set the DMM to the 400 mV AC scale, select the Hz mode. Let the reading stabilize at 0 Hz.
Tap on the engine block with a non-metallic object near the affected B68 KS and observe the DMM for a fluctuating frequency. If the DMM does not display a fluctuating frequency while tapping on the engine block then replace the affected B68 KS.
Verify the affected B68 KS is properly tightened, refer to «Fastener Tightening Specifications (6.2L LS3)»(/chevrolet/camaro/v-2009-2013/remont/mechanical/#engine-mechanical-62l-specifications__fastener-tightening-specifications-62l-ls3) or «Fastener Tightening Specifications (6.2L L99)»(/chevrolet/camaro/v-2009-2013/remont/mechanical/#engine-mechanical-62l-specifications__fastener-tightening-specifications-62l-l99) .
Ignition OFF, with appropriate length jumper wires, connect the KS1 harness to the B68 KS2 sensor and the KS2 harness to the B68 KS1 sensor.
Monitor the DTCs using a scan tool. Operate the vehicle within the conditions for running the DTC. Verify the fault does not follow the sensor in question. If the fault follows the sensor in question, replace the appropriate B68 KS.
Ignition OFF, remove the jumper wires from the previous step.
Measure for 2-3 volts between each of the following circuits and ground on the ECM side of the harness connector: The B68 KS signal circuit, terminal A The B68 KS signal circuit, terminal B If less than the specified range, test the circuits for a short to ground or an open/high resistance. If the circuits test normal, replace the K20 ECM. If greater than the specified range, test the circuits for a short to voltage. If the circuits test normal, replace the K20 ECM.
Test for intermittent or poor connections at the K20 ECM, B68 KS, and in-line connectors where present.
If all circuits test normal, replace the K20 ECM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

«Engine Control Module Programming and Setup (LS3, L99)»(/chevrolet/camaro/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__engine-control-module-programming-and-setup) or «Engine Control Module Programming and Setup (LLT)»(/chevrolet/camaro/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__engine-control-module-programming-and-setup)
«Engine Control Module Replacement»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-repair-instructions)
«Knock Sensor Replacement (Bank 1)»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-repair-instructions) or «Knock Sensor Replacement (Bank 2)»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-repair-instructions)

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
5 V Reference	P0651	P0335	P0651, P2135
Crankshaft Position Signal	P0335	P0335	P0335	P0336
Low Reference		P0335	P0335

The crankshaft position sensor circuits consist of an engine control module (ECM) supplied 5 V reference circuit, low reference circuit and an output signal circuit. The crankshaft position sensor is an internally magnetic biased digital output integrated circuit sensing device. The sensor detects magnetic flux changes between the peaks and valleys of a 58-tooth reluctor wheel on the crankshaft. Each tooth on the reluctor wheel is spaced at 60-tooth spacing, with 2 missing teeth for the reference gap. The crankshaft position sensor produces an ON/OFF DC voltage of varying frequency, with 58 output pulses per crankshaft revolution. The frequency of the crankshaft position sensor output depends on the velocity of the crankshaft. The crankshaft position sensor sends a digital signal, which represents an image of the crankshaft reluctor wheel, to the ECM as each tooth on the wheel rotates past the crankshaft position sensor. The ECM uses each crankshaft position signal pulse to determine crankshaft speed and decodes the crankshaft reluctor wheel reference gap to identify crankshaft position. This information is then used to sequence the ignition timing and fuel injection events for the engine. The ECM also uses crankshaft position sensor output information to determine the crankshaft relative position to the camshaft, to detect cylinder misfire, and to control the camshaft position actuator if equipped.

DTC P0101, P0102, P0103, P0340, P0341, P0641, or P0651 is not set.
The engine is cranking or running.
The airflow into the engine is greater than 3 g/s.
The DTCs run continuously when the above conditions are met.

The ECM detects that the starter is commanded on and the engine has been cranking for more than 4 s without a crankshaft position sensor pulse.
The ECM detects that the engine is running, but has not received a crankshaft position sensor pulse for 2 of 10 engine cycles.

DTC P0335 is a Type A DTC.
The camshaft position actuator if equipped is commanded to the parked position.

DTC P0335 is a Type A DTC.

With this DTC set, the engine may crank for an extended period of time during start-up.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Wiring Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Engine idling, observe the scan tool Crankshaft Position Active Counter parameter. The parameter should be incrementing.
Engine idling, observe the DTC information with a scan tool. DTC P0335 should not set.
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Note. You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.

Ignition OFF, disconnect the harness connector at the B26 crankshaft position sensor.
Ignition OFF, vehicle systems OFF, this may take 2 minutes, test for less than 1 ohms between the low reference circuit, terminal B, and ground. If greater than the specified value, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 ECM.
Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit, terminal C and ground. If less than the specified range, test the 5 V reference circuit for an open/high resistance or short to ground. If the circuit tests normal, replace the K20 ECM. If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.
Ignition ON, test for 4.8-5.2 V between the signal circuit terminal A and ground. If less than the specified range, test the signal circuit for an open/high resistance or short to ground. If the circuit tests normal, replace the K20 ECM. If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.
Ignition OFF, connect a 3 A fused jumper wire to the signal circuit terminal A.
Ignition ON, momentarily touch the other end of the fused jumper wire to the battery negative post. The Crankshaft Position Active counter, should increment. If the Crankshaft Position Active counter increments, test or replace the B26 crankshaft position sensor. If the Crankshaft Position Active counter does not increment, replace the K20 ECM.

Component Testing

Note. You must perform the Circuit/System Testing before proceeding with Component Testing.

Inspect the crankshaft position sensor for correct installation. Remove the B26 crankshaft position sensor from the engine and inspect the sensor O-ring for damage. If the sensor is loose, incorrectly installed, or damaged, replace the B26 crankshaft position sensor.
Connect the crankshaft position sensor harness connector to the B26 crankshaft position sensor.
Ignition ON, observe the Crankshaft Position Active counter parameter with a scan tool while passing a flat steel object across the tip of the sensor repeatedly. The Crankshaft Position Active counter parameter should increment with each pass of the steel object. If the function does not perform as specified, replace the B26 crankshaft position sensor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

«Crankshaft Position Sensor Replacement»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-repair-instructions)
«Control Module References»(/chevrolet/camaro/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for ECM replacement, setup, and programming

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
5 V Reference	P0651	P0335	P0651, P2135
Crankshaft Position Signal	P0335	P0335	P0335	P0336
Low Reference		P0335	P0335

The crankshaft position sensor circuits consist of an engine control module (ECM) supplied 5 V reference circuit, low reference circuit and an output signal circuit. The crankshaft position sensor is an internally magnetic biased digital output integrated circuit sensing device. The sensor detects magnetic flux changes between the peaks and valleys of a 58-tooth reluctor wheel on the crankshaft. Each tooth on the reluctor wheel is spaced at 60-tooth spacing, with two missing teeth for the reference gap. The crankshaft position sensor produces an ON/OFF DC voltage of varying frequency, with 58 output pulses per crankshaft revolution. The frequency of the crankshaft position sensor output depends on the velocity of the crankshaft. The crankshaft position sensor sends a digital signal, which represents an image of the crankshaft reluctor wheel, to the ECM as each tooth on the wheel rotates past the crankshaft position sensor. The ECM uses each crankshaft position signal pulse to determine crankshaft speed and decodes the crankshaft reluctor wheel reference gap to identify crankshaft position. This information is then used to sequence the ignition timing and fuel injection events for the engine. The ECM also uses crankshaft position sensor output information to determine the crankshaft relative position to the camshaft, to detect cylinder misfire, and to control the camshaft position actuator if equipped.

DTC P0101, P0102, P0103, P0340, P0341, P0641, or P0651 is not set.
The engine is cranking or running.
The airflow into the engine is greater than 3 g/s.
The DTCs run continuously when the above conditions are met.

The ECM detects that the engine is running, but receives less than 53 or more than 63 crankshaft position sensor pulses, during each engine revolution, for 8 of 10 engine revolutions.
The ECM detects that the engine is running, but more than 25 crankshaft resyncs have occurred within 20 s.
The ECM detects that the engine has been running, but the crankshaft does not sync for 0.4 s.

DTC P0336 is a Type A DTC.
The camshaft position actuator if equipped is commanded to the parked position.

DTC P0336 is a Type A DTC.

With this DTC set, the engine may crank for an extended period of time during start-up.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Wiring Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Engine idling, observe the scan tool Crankshaft Position Active Counter parameter. The parameter should be incrementing.
Engine idling, observe the DTC information with a scan tool. DTC P0336 should not set.
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Note. You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.

Ignition OFF, disconnect the harness connector at the B26 crankshaft position sensor.
Ignition OFF, vehicle systems OFF, this may take 2 minutes, test for less than 1 ohms between the low reference circuit, terminal B, and ground. If greater than the specified value, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 ECM.
Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit, terminal C and ground. If less than the specified range, test the 5 V reference circuit for an open/high resistance or short to ground. If the circuit tests normal, replace the K20 ECM. If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.
Ignition ON, test for 4.8-5.2 V between the signal circuit terminal A and ground. If less than the specified range, test the signal circuit for an open/high resistance or short to ground. If the circuit tests normal, replace the K20 ECM. If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.
Ignition OFF, connect a 3 A fused jumper wire to the signal circuit terminal A.
Ignition ON, momentarily touch the other end of the fused jumper wire to the battery negative post. The Crankshaft Position Active counter, should increment. If the Crankshaft Position Active counter increments, test or replace the B26 crankshaft position sensor. If the Crankshaft Position Active counter does not increment, replace the K20 ECM.

Note. You must perform the Circuit/System Testing before proceeding with Component Testing.

Inspect the crankshaft position sensor for correct installation. Remove the B26 crankshaft position sensor from the engine and inspect the sensor O-ring for damage. If the sensor is loose, incorrectly installed, or damaged, replace the B26 crankshaft position sensor.
Connect the crankshaft position sensor harness connector to the B26 crankshaft position sensor.
Ignition ON, observe the Crankshaft Position Active counter parameter with a scan tool while passing a flat steel object across the tip of the sensor repeatedly. The Crankshaft Position Active counter parameter should increment with each pass of the steel object. If the function does not perform as specified, replace the B26 crankshaft position sensor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

«Crankshaft Position Sensor Replacement»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-repair-instructions)
«Control Module References»(/chevrolet/camaro/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for ECM replacement, setup, and programming

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
5 V Reference	P0107, P0452, P0522, P0532, P0641	P0340	P0641
Camshaft Position Signal	P0340	P0340	P0340	P0341
Low Reference		P0340	P0340

The 4X camshaft position sensor circuits consist of an engine control module (ECM) supplied 5 V reference circuit, low reference circuit, and an output signal circuit. The camshaft position sensor is an internally magnetic biased digital output integrated circuit sensing device. The sensor detects magnetic flux changes between the peaks and valleys of a 4-tooth reluctor wheel attached to the camshaft. As each reluctor wheel tooth rotates past the camshaft position sensor, the resulting change in the magnetic field is used by the sensor electronics to produce a digital output pulse. The sensor returns a digital ON/OFF DC voltage pulse of varying frequency, with two narrow, and two wide output pulses per camshaft revolution that represent an image of the camshaft reluctor wheel. The frequency of the camshaft position sensor output depends on the velocity of the camshaft. The ECM decodes the narrow and wide tooth pattern to identify camshaft position. This information is then used to sequence the ignition timing and fuel injection events for the engine. The ECM also uses camshaft position sensor output information to determine the camshaft relative position to the crankshaft, to control the camshaft position actuator if equipped, and for limp-home operation.

The mass air flow (MAF) is greater than 3 grams per second.
DTC P0101, P0102, P0103, P0335, P0336, P0641, or P0651 is not set.
The engine is cranking or running.
DTC P0340 runs continuously when the above conditions are met.

The ECM detects that the starter is commanded on and the engine has been cranking for more than 4 s without a camshaft position sensor pulse.
The ECM detects that the engine has started, but did not receive a camshaft position sensor pulse during the first engine revolution.
The ECM detects that the engine is running, but does not receive a camshaft position sensor pulse for 800 of 1000 engine cycles.

DTC P0340 is a Type B DTC.
The camshaft position actuator if equipped is commanded to the parked position.

DTC P0340 is a Type B DTC.

With this DTC set, the engine may crank for an extended period of time during start-up.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Wiring Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Engine idling, observe the scan tool Camshaft Position Active Counter parameter. The parameter should be incrementing.
Engine idling, observe the DTC information with a scan tool. DTC P0340 should not set.
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Engine idling, move the related harnesses/connectors of the B23 camshaft position sensor while monitoring the scan tool Camshaft Position Variance parameter. The Camshaft Position Variance parameter should not change when moving the harness/connectors. If the above condition exists, repair the harness/connectors as necessary.
Ignition OFF, inspect the B23 camshaft position sensor for correct installation. If the B23 camshaft position sensor is loose, inspect the sensor and the O-ring for damage and replace, as necessary.
Ignition OFF, disconnect the harness connector at the B23 camshaft position sensor.
Ignition OFF, all vehicle systems OFF, this may take 2 minutes, test for less than 5 ohms between the low reference circuit terminal B and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 ECM.
Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal A and ground. If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 ECM. If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.
Test for 4.8-5.2 V between the signal circuit terminal C and ground. If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 ECM. If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.
Ignition OFF, connect a 3 A fused jumper wire to the camshaft position signal circuit terminal C.
Ignition ON, momentarily touch the end of the fused jumper wire to ground while monitoring the scan tool camshaft position active counter. The camshaft position active counter should increment. If the camshaft position active counter does not increment, replace the K20 ECM.
If all circuits test normal, replace the B23 camshaft position sensor.

Note. You must perform the Circuit/System Testing before proceeding with Component Testing.

Inspect the camshaft position sensor for correct installation. Remove the B23 camshaft position sensor from the engine and inspect the sensor O-ring for damage. If the sensor is loose, incorrectly installed, or damaged, replace the B23 camshaft position sensor.
Connect the camshaft position sensor harness connector to the B23 camshaft position sensor.
Ignition ON, observe the Camshaft Position Active counter parameter with a scan tool while passing a flat steel object across the tip of the sensor repeatedly. The Camshaft Position Active counter parameter should increment with each pass of the steel object. If the function does not perform as specified, replace the B23 camshaft position sensor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

«Camshaft Position Sensor Replacement»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-repair-instructions)
«Control Module References»(/chevrolet/camaro/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for ECM replacement, setup, and programming

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
5 V Reference	P0107, P0452, P0522, P0532, P0641	P0340	P0641
Camshaft Position Signal	P0340	P0340	P0340	P0341
Low Reference		P0340	P0340

DTC P0335, P0336, P0641, or P0651 is not set.
The engine is cranking or running.
DTCs run continuously when the above conditions are met.

The ECM detects that the engine was started, but has received less than 2 or more than 8 camshaft position sensor pulses during the first engine resolution.
The ECM detects that the engine has started and is running, but receives less than 398 or more than 402 camshaft position pulses per 100 engine cycles in 800 of 1000 engine cycles.

DTC P0341 is a Type B DTC.
The camshaft position actuator if equipped is commanded to the parked position.
The ignition system defaults to a failed camshaft position sensor limp home mode.

DTC P0341 is a Type B DTC.

With this DTC set, the engine may crank for an extended period of time during start-up.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Wiring Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Ignition OFF, inspect the engine wiring harness carrying the camshaft position sensor circuits for the following conditions: Close routing of aftermarket electrical equipment Close to solenoids, motors, and relays. If any of these are determined to be a possible source of electrical interference, correct any wire harness routing or component placement conditions.
Engine idling, observe the scan tool Intake and Exhaust Camshaft Position Active Counter parameters. Both parameters should be incrementing.
Engine idling, observe the DTC information with a scan tool. DTC P0341 or P0366 should not set.
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Engine idling, move the related harnesses/connectors of the B23 camshaft position sensor while monitoring the scan tool Camshaft Position Variance parameter. The Camshaft Position Variance parameter should not change when moving the harness/connectors. If the above condition exists, repair the harness/connectors as necessary.
Ignition OFF, inspect the B23 camshaft position sensor for correct installation. If the B23 camshaft position sensor is loose, inspect the sensor and the O-ring for damage, and replace as necessary.
Disconnect the harness connector at the B23 camshaft position sensor.
Ignition OFF, all vehicle systems OFF, this may take 2 minutes, test for less than 5 ohms between the low reference circuit terminal B and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 ECM.
Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal A and ground. If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 ECM. If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.
Test for 4.8-5.2 V between the signal circuit terminal C and ground. If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 ECM. If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.
Ignition OFF, connect a 3 A fused jumper wire to the camshaft position signal circuit terminal C.
Ignition ON, momentarily touch the end of the fused jumper wire to ground while monitoring the scan tool camshaft position active counter. The camshaft position active counter should increment. If the camshaft position active counter does not increment, replace the K20 ECM.
If all circuits test normal, replace the B23 camshaft position sensor.

Note. You must perform the Circuit/System Testing before proceeding with Component Testing.

Inspect the camshaft position sensor for correct installation. Remove the B23 camshaft position sensor from the engine and inspect the sensor O-ring for damage. If the sensor is loose, incorrectly installed, or damaged, replace the B23 camshaft position sensor.
Connect the camshaft position sensor harness connector to the B23 camshaft position sensor.
Ignition ON, observe the Camshaft Position Active Counter parameter with a scan tool.
Pass a flat steel object across the tip of the sensor repeatedly. The Camshaft Position Active Counter parameter should increment with each pass of the steel object. If the function does not perform as specified, replace the B23 camshaft position sensor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

«Camshaft Position Sensor Replacement»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-repair-instructions)
«Control Module References»(/chevrolet/camaro/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for ECM replacement, setup, and programming

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage
Ignition Voltage	1	2
Ignition Coil 1 Control Circuit	P0300, P0351	P0300, P0351	P0300, P0351
Ignition Coil 2 Control Circuit	P0300, P0352	P0300, P0352	P0300, P0352
Ignition Coil 3 Control Circuit	P0300, P0353	P0300, P0353	P0300, P0353
Ignition Coil 4 Control Circuit	P0300, P0354	P0300, P0354	P0300, P0354
Ignition Coil 5 Control Circuit	P0300, P0355	P0300, P0355	P0300, P0355
Ignition Coil 6 Control Circuit	P0300, P0356	P0300, P0356	P0300, P0356
Ignition Coil 7 Control Circuit	P0300, P0357	P0300, P0357	P0300, P0357
Ignition Coil 8 Control Circuit	P0300, P0358	P0300, P0358	P0300, P0358
Low Reference		P0351, P0358
1. The Engine Cranks But Does Not Run and opens the fuse that supplies voltage to the ignition coils. 2. The Engine Cranks But Does Not Run

The ignition system on this engine uses an individual coil/module for each cylinder. The engine control module (ECM) controls the spark event for each cylinder through the eight individual ignition control circuits. When the ECM commands the ignition control circuit ON, electrical current will flow through the primary winding of the ignition coil, creating a magnetic field. When a spark event is requested, the ECM will command the ignition control circuit OFF, interrupting current flow through the primary winding. The magnetic field created by the primary winding will collapse across the secondary coil windings, producing a high voltage across the spark plug electrodes. The ECM uses information from the crankshaft position sensor, and the camshaft position sensor for sequencing and timing of the spark events.

The engine is running.
The ignition voltage is greater than 6 V.
DTC P0351-P0358 runs continuously when the above conditions are met.

The ECM detects that the commanded state of the driver and the actual state of the control circuit do not match for greater than 5 s.

DTCs P0351-P0358 are Type B DTCs.

A high resistance condition on any ignition control circuit can cause an engine misfire without setting DTC P0351-P0358.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Wiring Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Engine running, observe the following scan tool control circuit status parameters for the appropriate cylinder T8 ignition coil: Ignition Coil 1-8 Control Circuit Low Voltage Test Status Ignition Coil 1-8 Control Circuit Open Test Status Ignition Coil 1-8 Control Circuit High Voltage Test Status Each parameter should display Not Run or OK.
Engine idling, observe the DTC information with a scan tool. DTC P0351, P0352, P0353, P0354, P0355, P0356, P0357, or P0358 should not set.
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Ignition OFF, disconnect the harness connector at the appropriate T8 ignition coil.
Ignition OFF, and all vehicle systems OFF, it may take up to 2 minutes for all the systems to power down. Test for less than 5 ohms between the ground circuit terminal A and ground. If greater than the specified range, repair the ground circuit for an open/high resistance.
Ignition OFF, test for less than 5 ohms between the low reference circuit terminal B and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.
Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal D and ground. If the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition voltage circuit fuse is open, test all components connected to the ignition voltage circuit and replace as necessary.
Engine idling at operating temperature, test for 0.200-0.500 V between the appropriate ignition control circuit terminal C and ground. If less than the specified range, test the ignition control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 ECM. If greater than the specified range, test the ignition control circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM.
If all circuits test normal, test or replace the T8 ignition coil.

«Ignition Coil Replacement»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-repair-instructions)
«Control Module References»(/chevrolet/camaro/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for ECM replacement, setup, and programming

Repair Verification

Note. An ignition control circuit fault condition will result in an engine misfire, and under certain driving conditions could possibly overheat the 3-way catalytic converter.

Install any components or connectors that have been removed or replaced during diagnosis.
Perform any adjustment, programming, or setup procedures that are required when a component or module is removed or replaced.
Clear the DTCs.
Turn the ignition OFF for 60 s.
If the repair is related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze Frame/Failure Records, if applicable, in order to verify the DTC does not reset. If the DTC resets or another DTC is present, refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) and perform the appropriate diagnostic procedure.
To verify that the performance of the catalytic converter has not been affected by the condition that set this DTC, perform the Repair Verification for DTC P0420 or P0430.

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Note. A new converter with less than 100 mi on it may set DTC P0420 or P0430 due to out-gassing of the internal matting. Operating the vehicle at highway speeds for approximately 1 h may correct the condition.

A 3-way catalytic converter controls emissions of hydrocarbons, CO and NOx. The catalyst within the converter promotes a chemical reaction, which oxidizes the hydrocarbons and the CO that are present in the exhaust gas. This process converts the hydrocarbons and the CO into water vapor and CO2, and reduces the NOx, by converting the NOx into nitrogen. The catalytic converter also stores oxygen. The ECM monitors this process by using a heated oxygen sensor (HO2S) that is in the exhaust stream after the 3-way catalytic converter. The HO2S 2 produces an output signal that the ECM uses to calculate the oxygen storage capacity of the catalyst. This indicates the ability of the catalyst to convert the exhaust emissions efficiently. The ECM monitors the efficiency of the catalyst by allowing the catalyst to heat, then wait for a stabilization period while the engine is idling. The ECM then adds and removes fuel while monitoring the HO2S 2. When the catalyst is functioning properly, the HO2S 2 response to the extra fuel is slow compared to the response of the HO2S 1, which is located before the 3-way catalytic converter. When the HO2S 2 response is near that of the HO2S 1, the oxygen storage capability and efficiency of the catalyst may be degraded below an acceptable threshold.

DTC P0030, P0031, P0036, P0037, P0038, P0068, P0106, P0107, P0108, P0112, P0113, P0117, P0118, P0120, P0121, P0122, P0123, P0125, P0128, P0130, P0131, P0132, P0133, P0134, P0135, P0136, P0137, P0138, P0140, P0141, P0171, P0172, P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0300, P0315, P0326, P0327, P0336, P0340, P0341, P0442, P0446, P0452, P0453, P0455, P0496, P0500, P0502, P0506, P0507, P0601, P0602, P0606, P0641, P0722, P0723, P1133, P1134, P1516, P1621, P2135, P2138, or P2176 is not set.
Before the ECM performs the idle test, the vehicle must be driven under the following conditions: The engine speed is greater than 1,300 RPM. The engine run time is greater than 100 s. Both conditions exist for greater than 16 s.
The vehicle speed is less than 1.6 km/h (1 mph).
The throttle position is less than 2 %.
The Mass Air Flow (MAF) is between 2-21 g/s.
The engine is operating in Closed Loop.
The fuel trim learn is enabled.
The Engine Coolant Temperature (ECT) is between 45-129°C (113-264°F).
The Barometric Pressure (BARO) is greater than 70 kPa.
The Catalytic Converter Calculated Temperature parameter is between 600-900°C (1,112-1,652°F) for greater than 6 min.
The Intake Air Temperature (IAT) is between -20 and +250°C (-4 and +482°F).
The battery voltage is greater than 11 V.
The transmission is in Drive Range-Automatic transmissions only.
The short term fuel trim is between -10 and +10 %.
The engine is idling for less than 50 s.
This diagnostic attempts one test during each valid idle period when the above conditions have been met. This diagnostic attempts up to 8 tests during each drive cycle.

The ECM has determined the catalyst efficiency has degraded below a calibrated threshold.

DTCs P0420 and P0430 are Type A DTCs.

DTC Type Reference

Electrical Information Reference

Diagnostic Trouble Code (DTC) List - Vehicle

Verify that no other DTCs are set. If any DTCs are set, refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) .
Operate the vehicle within the Conditions for Running the DTC while observing the scan tool Catalyst monitor Not At Idle Test Conditions Met parameter. The parameter will change to Yes when the OFF Idle Conditions have been met. If not the specified value, operate the vehicle within the OFF Idle Conditions.
When the parameter has changed to Yes and the conditions are safe, stop and idle the vehicle in gear.
Apply the service brake.
Monitor the scan tool Catalyst Monitor Test State parameter. When the parameter indicates Active, the Catalyst Monitor Test is running.
Continue to monitor the parameter. When the parameter indicates Inactive, the Catalyst Monitor Test has completed.
When the test has completed, the Catalyst Monitor Test Counter Bank 1 or Bank 2 parameter will increment by one and the Catalyst Monitor Test Result Bank 1 or Bank 2 parameter will indicate Pass, Fail, or No Decision. If no decision has been made, repeat steps 2-6 until the Test Result parameter indicates a Pass or Fail.

Engine idling, observe the DTC information with a scan tool. Verify there are no HO2S or misfire DTCs set. If any DTCs are set, refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) to diagnosis the applicable DTC before proceeding with this diagnostic procedure.
Verify the following conditions do not exist with the catalytic converter: Dents A severe discoloration caused by excessive temperatures An internal rattle caused by damaged catalyst substrate Restrictions-Refer to «Restricted Exhaust»(/chevrolet/camaro/v-2009-2013/remont/exhaust/#engine-exhaust-system) . If a condition is found, replace the catalytic converter.
Verify the following conditions do not exist with the exhaust system: Leaks-Refer to «Exhaust Leakage»(/chevrolet/camaro/v-2009-2013/remont/exhaust/#engine-exhaust-system__exhaust-leakage) . Physical damage Loose or missing hardware Improperly torqued HO2S If a condition is found, repair the exhaust system.
Verify the following conditions do not exist with the HO2S 2: A grounded wiring harness Damage If a condition is found, replace the HO2S 2.
If no physical condition is detected and the HO2S 2 is as active as the HO2S 1 after operating the engine at 1,500 RPM for 1 min and then returning to a stabilized idle, then replace the catalytic converter.

Note. A new converter with less than 161 km (100 mi) on it may set DTC P0420 or P0430 due to out-gassing of the internal matting. Operating the vehicle at highway speeds for approximately 1 h may correct the condition.

«Catalytic Converter Replacement - Left Side (LLT)»(/chevrolet/camaro/v-2009-2013/remont/exhaust/#engine-exhaust-system) or «Catalytic Converter Replacement - Left Side (L99/LS3)»(/chevrolet/camaro/v-2009-2013/remont/exhaust/#engine-exhaust-system)
«Catalytic Converter Replacement - Right Side (LLT)»(/chevrolet/camaro/v-2009-2013/remont/exhaust/#engine-exhaust-system) or «Catalytic Converter Replacement - Right Side (L99/LS3)»(/chevrolet/camaro/v-2009-2013/remont/exhaust/#engine-exhaust-system)
«Heated Oxygen Sensor Replacement - Bank 1 Sensor 2»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-repair-instructions)
«Heated Oxygen Sensor Replacement - Bank 2 Sensor 2»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-repair-instructions)
«Exhaust Leakage»(/chevrolet/camaro/v-2009-2013/remont/exhaust/#engine-exhaust-system__exhaust-leakage)
«Restricted Exhaust»(/chevrolet/camaro/v-2009-2013/remont/exhaust/#engine-exhaust-system)

Verify that no other DTCs are set. If any DTCs are set, refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) .
Operate the vehicle within the Conditions for Running the DTC while observing the scan tool Catalyst Monitor Not At Idle Test Conditions Met parameter. The parameter will change to Yes when the OFF Idle Conditions have been met. If not the specified value, operate the vehicle within the OFF Idle Conditions.
When the parameter has changed to Yes and the conditions are safe, stop and idle the vehicle in gear.
Apply the service brake.
Monitor the scan tool Catalyst Monitor Test State parameter. When the parameter indicates Active, the Catalyst Monitor Test is running.
Continue to monitor the parameter. When the parameter indicates Inactive, the Catalyst Monitor Test has completed.
When the test has completed, the Catalyst Monitor Test Counter Bank 1 or Bank 2 parameter will increment by one and the Catalyst Monitor Test Result Bank 1 or Bank 2 parameter will indicate Pass, Fail, or No Decision. If no decision has been made, repeat steps 2-6 until the Test Result parameter indicates a Pass or Fail.

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The engine off natural vacuum test is the small leak detection diagnostic for the evaporative emission system. This diagnostic tests the evaporative emission system for a small leak when the key is turned OFF and the correct conditions are met. Heat from the exhaust system is transferred into the fuel tank while the vehicle is operating. When the vehicle is turned OFF and the evaporative emission system is sealed a change in the fuel tank vapor temperature occurs which results in a corresponding pressure change in the fuel tank vapor space. This change is monitored by the ECM using the fuel tank pressure sensor input. With a leak in the system, the amount of pressure change will be less than that of a sealed system.

DTCs P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0222, P0223, P0443, P0446, P0449, P0451, P0452, P0453, P0454, P0455, P0461, P0462, P0463, P0464, P0496, P0502, P0503, P0608, P0641, P0651, P1516, P2101, P2119, P2120, P2122, P2123, P2125, P2127, P2128, P2135, P2138 are not set.
The ignition 1 voltage is between 10-16 V.
The barometric pressure (BARO) is greater than 74 kPa.
No fuel filling during the engine off natural vacuum test period.
The fuel level is between 10-90 percent.
The start-up engine coolant temperature (ECT) and the start-up intake air temperature (IAT) are between 0-40°C (32-104°F).
The barometric pressure (BARO) is more than 74 kPa.
The engine run time before engine shut-off was greater than 10 minutes.
The drive distance before engine shut-off was more than 5 kilometers (3.1 miles).
The ignition is OFF.
The ambient air temperature at the end of the drive cycle is between 0-32°C (32-93°F).
DTC P0442 runs once per drive cycle during the hot soak period after the ignition is turned OFF and may require up to 45 minutes to complete. The controller will not make more than 2 test attempts per day. The time since the last completed engine off natural vacuum test must be at least 17 hours

The ECM detects a leak in the evaporative emission system that is greater than a calibrated amount.
The ECM must complete several engine off natural vacuum tests before the diagnostic can turn the MIL on or off.

DTC P0442 is a Type A DTC.

The evaporative emission system can be filled with smoke more quickly and completely by opening the system opposite the end where the smoke is injected. When injecting smoke at the service port remove the fuel fill cap, or temporarily leave the vent open, until smoke is observed then close the system and continue testing.
To help locate intermittent leaks using the J 41413-200: EEST, move all evaporative emission components while observing smoke with the J 41413-SPT: White Light.
Individual components can be isolated and tested using adapters in the J 41413-300: Kit.
A condition may exist where a leak in the evaporative emission system only exists under a vacuum condition. This type of leak may be detected by using the scan tool Purge/Seal function to create a vacuum in the evaporative emission system and then observe the fuel tank pressure parameter for vacuum decay.

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Description and Operation

Scan Tool Reference

Control Module References for scan tool information

Special Tools

CH 48096: Evaporative Emissions Service Access Port Tool
J 41413-200: Evaporative Emissions System Tester (EEST)
J 41413-300: Evaporative Emissions Cap and Plug Kit
J 41413-SPT: High Intensity White Light
For equivalent regional tools, refer to «Special Tools»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-36l-special-tools-and-equipment) .

Note. Refer to the J 41413-200: EEST operation manual for detailed instructions in Evaporative Emission System Diagnosis . Larger volume fuel tanks and/or those with lower fuel levels may require several minutes for the floating indicator to stabilize. Ensure that the underbody temperature of the vehicle and the tester are similar.

Disconnect the purge tube at the quick connector on the evaporative emission canister side of the Q12 evaporative emission canister purge solenoid valve and install the CH 48096: Port Tool.
Connect the J 41413-200: EEST to the CH 48096: Port Tool.
Ignition ON, using a scan tool close the evaporative emission canister vent solenoid valve to seal the evaporative emission system.
Use the flow meter on the J 41413-200: EEST, calibrated to 0.51 mm (0.020 in) to determine that there is no leak in the evaporative emission system. If a leak is detected, use the J 41413-200: EEST to apply smoke to the evaporative emission system at the purge tube until the leak is located using the J 41413-SPT: White Light.

Seal the evaporative emission system and use the flow meter on the J 41413-200: EEST, calibrated to 0.51 mm (0.020 in) to determine that there is no leak in the evaporative emission system.
Clear DTCs.

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	High Resistance	Open	Short to Voltage
Ignition 1 Voltage - Purge Supply	P0443	P0443	P0443
Battery Positive - Vent Supply	P0449	P0449	P0449
Evaporative Emission Purge Solenoid Valve Control	P0443	P0443	P0443	P0443
Evaporative Emission Vent Solenoid Valve Control	P0449	P0449	P0449	P0449

An ignition voltage is supplied directly to the evaporative emission (EVAP) canister purge solenoid valve. The engine control module (ECM) grounds the evaporative emission canister purge solenoid valve control circuit through an internal switch called a driver. The ECM monitors the status of the driver. The evaporative emission canister purge solenoid valve is pulse width modulated (PWM). A scan tool will display the amount of ON time as a percentage.

Battery voltage is supplied to the evaporative emission canister solenoid valve. The ECM grounds the evaporative emission canister vent solenoid valve control circuit through an internal switch called a driver. The ECM monitors the status of the driver. A scan tool will display the commanded state of the evaporative emission canister vent solenoid valve as ON or OFF.

The ignition is ON.
The system voltage is between 9-18 V.
DTCs P0443 and P0449 run continuously when the above conditions are met.

The ECM detects that the commanded state of the driver and the actual state of the control circuit do not match for a minimum of 5 s.

DTCs P0443 and P0449 are Type B DTCs.

Schematic Reference

Description and Operation

Connector End View Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Troubleshooting with a Test Lamp»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Wiring Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

P0443

Ignition ON, engine OFF, you should hear a clicking sound when the evaporative emission canister purge solenoid valve is commanded to 50 % with a scan tool. The clicking sound should stop when the evaporative emission canister purge solenoid valve is commanded to 0 %. The rate at which the valve cycles should increase when the commanded state is increased, and decrease when the commanded state is decreased.
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

P0449

Ignition ON, engine OFF, command the evaporative emission vent solenoid valve to Not Venting and Venting with a scan tool.
Listen for a click when the valve operates. Verify that both the Venting and the Not Venting states are commanded.
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Ignition OFF, disconnect the harness connector at the Q12 evaporative emission canister purge or the Q13 vent solenoid valve.
Ignition ON, verify that a test lamp illuminates between the voltage supply circuit terminal and ground. If the test lamp does not illuminate, test the voltage supply circuit for a short to ground or an open/high resistance. If the circuit tests normal and the voltage supply circuit fuse is open, test or replace the evaporative emission canister purge solenoid valve.
Connect a test lamp between the voltage supply circuit terminal and the control circuit terminal.
Command the EVAP canister purge solenoid valve to 50 % with a scan tool, or the EVAP canister vent solenoid valve Venting and Not Venting. The test lamp should respond to the command. If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the K20 ECM. If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K20 ECM.
If all circuits test normal, replace the appropriate solenoid valve.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

«Evaporative Emission Canister Purge Solenoid Valve Replacement»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-repair-instructions)
«Evaporative Emission Canister Vent Solenoid Valve Replacement»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-repair-instructions)
«Control Module References»(/chevrolet/camaro/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for ECM replacement, setup, and programming

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Typical Scan Tool Data

Fuel Tank Pressure Sensor Signal Voltage	Fuel Tank Pressure
1.5 V	Atmospheric Pressure/BARO
Less than 1.5 V	Positive Pressure
More than 1.5 V	Negative Pressure/Vacuum

This DTC tests the evaporative emission system for a restricted or blocked evaporative emission vent path that would cause excess amounts of vacuum to be developed in the evaporative emission system. With the purge valve open and the canister vent valve open, if the evaporative emission system vacuum goes above a calibrated threshold, the test will fail.

DTCs P0106, P0107, P0108, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0220, P0222, P0223, P0442, P0443, P0449, P0451, P0452, P0453, P0454, P0464, P0496, P0608, P0609, P0641, P0651, P1516, P2101, P2119, P2120, P2122, P2123, P2125, P2127, P2128, P2135, P2138 are not set.
The ignition voltage is between 11-18 V.
The barometric pressure (BARO) is more than 74 kPa.
The fuel level is between 15-85 %.
The engine coolant temperature (ECT) is less than 35°C (95°F).
The intake air temperature (IAT) is between 4-30°C (39-86°F).
DTC P0446 runs once per cold start when the above conditions are met.

The fuel tank vacuum is greater than -12 inches H2O vacuum for 5 s. OR
The fuel tank pressure is less than -2.5 inches H2O or more than +5 inches for 60 s after a cold start.

DTC P0446 is a Type B DTC.

An intermittent condition could be caused by a damaged evaporative emission vent housing, a temporary blockage at the evaporative emission canister vent solenoid valve inlet, or a pinched vent hose. A blockage in the vent system will also cause a poor fuel fill condition.
An evaporative emission canister filter that is restricted can cause this DTC to set.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Wiring Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Ignition ON and fuel cap removed, verify that the Fuel Tank Pressure Sensor parameter is between 1.3-1.7 V. If not within the specified range, go to the fuel tank pressure sensor section in «Circuit/System Testing»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-dtc-p0315-through-p1258) .
Install the fuel cap.
With the engine running, the EVAP canister vent solenoid valve open, use a scan tool to command the EVAP canister purge solenoid valve to 100 %. The fuel tank vacuum should not increase to more than -15 mmHg (-8 inches H2O). If the fuel tank vacuum is greater than the specified range, go to the restriction section in «Circuit/System Testing»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-dtc-p0315-through-p1258) .
Using the scan tool, decrease the canister purge duty cycle from 100 % to 0 %. The vacuum should decrease to near zero. If the fuel tank vacuum does not return to zero or appears to decrease too slowly go to the restriction section in «Circuit/System Testing»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-dtc-p0315-through-p1258) .
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Note. Perform the Circuit/System Verification before proceeding with the Circuit/System Testing.

Restriction

With the engine running, the EVAP canister vent solenoid valve open, and the EVAP canister purge solenoid valve commanded to 100 %, the fuel tank vacuum should not increase to more than -15 mmHg (-8 inches H2O). If the fuel tank vacuum is greater than the specified value, isolate the restriction by disconnecting one component at a time while the EVAP canister purge solenoid valve is commanded to 100 % and the vent valve is open.
Using the scan tool, decrease the canister purge duty cycle from 100 % to 0 %. The vacuum should decrease to near zero. If the fuel tank vacuum does not return to zero, or appears to decrease too slowly, inspect the components in the EVAP vent system for a restriction.

Fuel Tank Pressure Sensor

Ignition OFF, disconnect the harness connector at the B150 fuel tank pressure sensor.
Ignition OFF, all vehicle systems OFF, this may take up to 2 minutes, test for less than 5 ohms between the low reference circuit terminal and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the fuel tank pressure sensor.

«Evaporative Emission Canister Vent Solenoid Valve Replacement»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-repair-instructions)
«Evaporative Emission Canister Replacement»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-36l-repair-instructions)
«Fuel Tank Pressure Sensor Replacement»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-36l-repair-instructions)
«Control Module References»(/chevrolet/camaro/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references)

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

With the engine running, the evaporative emission canister vent solenoid valve open and the evaporative emission canister purge solenoid valve commanded to 100 %, the fuel tank vacuum should not increase to more than -15 mmHg (-8 inches H2O).

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	High Resistance	Open	Short to Voltage	Signal Performance
Fuel Tank Pressure Sensor 5 V Reference	P0452, P0532, P0641	P0451	P0446, P0452	P0453, P0641
Fuel Tank Pressure Sensor Signal	P0452	P0451	P0452, P0453	P0453	P0451, P0454
Fuel Tank Pressure Sensor Low Reference		P0446, P0451	P0446		P0451

Circuit	Short to Ground	Open	Short to Voltage
Operating Conditions: Ignition ON, Engine OFF Parameter Normal Range: 1.3-1.7 V
Fuel Tank Pressure Sensor 5 V Reference	0 V	0 V	4.2-5 V
Fuel Tank Pressure Sensor Signal	0 V	0 V	5 V
Fuel Tank Pressure Sensor Low Reference		4.5 V

Fuel Tank Pressure Sensor Voltage

The fuel tank pressure sensor measures air pressure or vacuum in the evaporative emission (EVAP) system. The engine control module (ECM) supplies a 5 V reference and a low reference circuit to the fuel tank pressure sensor. The fuel tank pressure sensor signal voltage varies depending on EVAP system pressure or vacuum. The controller also uses this fuel tank pressure signal to determine atmospheric pressure for use in the engine-off small leak test, DTC P0442. Before using this signal as an atmospheric reference it must first be re-zeroed.

P0451

DTC P0451 runs only when the engine-off natural vacuum small leak test, P0442, executes.
The number of times this test runs can range from 0-2 per engine-off period. The length of the test can be up to 10 min.

P0452 and P0453

DTC P0452 and P0453 run continuously when the ignition is ON.

P0454

DTC P0454 runs only when the engine-off natural vacuum small leak test, P0442, executes.
This test can run once per engine-off period. The length of the test can be up to 10 min.
A refueling event is not detected.

This DTC will set if the controller is unable to re-zero the fuel tank pressure sensor voltage within a calibrated range during the engine-off small leak test, P0442.

P0452

The fuel tank pressure sensor voltage is less than 0.1 V for more than 5 s.

P0453

The fuel tank pressure sensor voltage is more than 4.9 V for more than 5 s.

If, during the engine-off natural vacuum small leak test, P0442, the ECM detects an abrupt fuel tank pressure signal change, other than a refueling event, this DTC will set. An abrupt change is defined as a change of 0.45 inch H2O in the span of 1 s.

DTCs P0451 and P0454 are Type A DTCs.
DTCs P0452 and P0453 are Type B DTCs.

DTCs P0451 and P0454 are Type A DTCs.
DTCs P0452 and P0453 are Type B DTCs.

P0451 and P0454

A restriction in the EVAP canister or vent lines could prevent fuel vapor pressure from bleeding off fast enough. If the vent system cannot bleed off pressure fast enough, the re-zero procedure may not complete successfully, which could cause this code to set.
Ensure that the reference port on the fuel tank pressure sensor is unobstructed.
An fuel tank pressure sensor that is skewed or does not have a linear transition from low to high may cause this code to set. Scan tool output controls, snapshot, and plot functions can help detect erratic sensor response. To test the sensor signal under vacuum conditions, use the Quick Snapshot and the Purge/Seal functions to capture data while commanding purge to 20 %, then plot the data to look for erratic sensor operation. A similar test can be done for the pressure side of the sensor operation by applying pressure with the J 41413-200: EEST while taking a snapshot.

Schematic Reference

Connector End View Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Wiring Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Special Tools

J 41413-200: Evaporative Emission System Tester (EEST)
For equivalent regional tools, refer to «Special Tools»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-36l-special-tools-and-equipment) .

Remove the fuel cap.
Ignition ON, engine OFF.
Observe the Fuel Tank Pressure Sensor parameter with a scan tool.
The fuel tank pressure Sensor parameter should be 1.1-1.7 V.

Ignition OFF, disconnect the harness connector at the B150 fuel tank pressure sensor.
Ignition OFF, all vehicle systems OFF, this may take up to 2 minutes, test for less than 5 ohms of resistance between the low reference circuit terminal 2 and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.
Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 3 and ground. If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM. If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the ECM.
Verify the scan tool B150 fuel tank pressure sensor parameter is less than 0.2 V. If greater than the specified range, test the signal circuit terminal 1 for a short to voltage. If the circuit tests normal, replace the K20 ECM.
Install a 3 A fused jumper wire between the signal circuit terminal 1 and the 5 V reference circuit terminal 3. Verify the scan tool fuel tank pressure sensor parameter is greater than 4.7 V. If less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the K20 ECM.
If all circuits test normal, test or replace the B150 fuel tank pressure sensor.

«Fuel Tank Pressure Sensor Replacement»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-36l-repair-instructions)
For DTC P0452 or P0453, always perform the «Diagnostic Repair Verification»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-repair-verification) after completing the diagnostic procedure
For DTC P0451 or P0454, clear DTCs with a scan tool
«Control Module References»(/chevrolet/camaro/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for ECM replacement, setup, and programming

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The ECM tests the Evaporative Emission (EVAP) System for a large leak or restrictions to the purge path in the EVAP system. When the enabling criteria has been met the ECM commands the evaporative emission canister vent solenoid valve ON and the evaporative emission canister purge solenoid valve ON, allowing vacuum into the evaporative emission system. The ECM monitors the fuel tank pressure sensor voltage to verify that the system is able to reach a predetermined level of vacuum within a set amount of time.

Before the ECM can report DTC P0455 failed, DTC P0496 must run and pass.
DTCs P0106, P0107, P0108, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0220, P0222, P0223, P0442, P0443, P0449, P0451, P0452, P0453, P0454, P0464, P0496, P0608, P0609, P0641, P0651, P1516, P2101, P2119, P2120, P2122, P2123, P2125, P2127, P2128, P2135, P2138 are not set.
The ignition voltage is between 11-18 V.
The barometric pressure (BARO) is more than 74 kPa.
The fuel level is between 10-90 %.
The engine coolant temperature (ECT) at start-up is less than 35°C (95°F).
The intake air temperature (IAT) is between 4-30°C (39-86°F).
DTC P0455 runs once per cold start when the above conditions are met.

The evaporative emission system is not able to achieve or maintain a calibrated level of vacuum within a set amount of time.

DTC P0455 is a Type B DTC.

Inspect for a loose, missing, damaged, or incorrect fuel fill cap.
Inspect for a damaged fuel filler neck seal surface.
A blockage or restriction in the evaporative emission purge solenoid valve, purge pipe, evaporative emission canister, or vapor pipe, can cause this DTC to set.
The evaporative emission system can be filled with smoke more quickly and completely by opening the system opposite the end where the smoke is injected. Close the system once smoke is observed.
To help locate intermittent leaks using the J 41413-200: EEST, move all evaporative emission components while observing smoke with the J 41413-SPT: White Light.
Individual components can be isolated and tested using adapters in the J 41413-300: Kit.
A condition may exist where a leak in the evaporative emission system only exists under a vacuum condition. This type of leak may be detected by using the scan tool Purge/Seal function to create a vacuum in the evaporative emission system and then observe the fuel tank pressure parameter for vacuum decay.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Wiring Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Special Tools

CH 48096: Evaporative Emissions Service Access Port Tool
J 41415-30: Fuel Tank Adapter
J 41413-200: Evaporative Emissions System Tester (EEST)
J 41413-300: Evaporative Emissions Cap and Plug Kit
J 41413-311: Evaporative Emissions Plug
J 41413-SPT: High Intensity White Light
J 41413-VLV: Evaporative Emissions Service Port Vent Tool
For equivalent regional tools, refer to «Special Tools»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-36l-special-tools-and-equipment) .

Note. Larger volume fuel tanks and/or those with lower fuel levels may require several minutes for the floating indicator to stabilize. Refer to the J 41413-200: EEST operation manual for detailed instructions in Evaporative Emission System Diagnosis .

Disconnect the purge tube at the quick connector on the evaporative emission canister side of the Q12 evaporative emission canister purge solenoid valve. Install the CH 48096: Port Tool between the disconnected purge tube and the purge solenoid valve. Connect the J 41413-200: EEST to the service access port tool.
Ignition ON, use a scan tool to seal the evaporative emission system.
Use the flow meter on the J 41413-200: EEST, calibrated to 0.51 millimeter (0.020 inch) to determine that there is no leak in the evaporative emission system. If a leak is detected, use the J 41413-200: EEST to apply smoke to the evaporative emission system at the purge tube until the leak is located using the J 41413-SPT: White Light.
To test for a restriction, connect the J 41413-200: EEST nitrogen/smoke hose to the to the J 41413-311: Evaporative Emission Plug brass cone adapter. Disconnect the hose at the fuel cap end of the J 41415-30: Adapter. Connect the J 41413-311: Evaporative Emission Plug to the disconnected hose on the J 41415-30: Adapter. Install the J 41415-30: Adapter filler neck end only to the vehicle.
Allow the engine to idle.
Use the Purge/Seal function to seal the system with a scan tool.
Command the EVAP Purge Solenoid Valve to 30 %.
The vacuum/pressure gauge on the J 41413-200: EEST and the fuel tank pressure parameter on the scan tool should both show vacuum. If the vacuum/pressure gauge shows vacuum, but the fuel tank pressure parameter does not show vacuum, replace the fuel tank pressure sensor. If neither the fuel tank pressure parameter nor the vacuum/pressure gauge shows vacuum, repair the restriction in the purge path.
Verify that the vacuum increases to the abort limit on the scan tool or more than 3.2 V, and the values are similar between the scan tool and the vacuum/pressure gauge on the J 41413-200: EEST. If the values are not similar, or the voltage did not reach 3.2 V, replace the B150 fuel tank pressure sensor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Fuel Tank Pressure Sensor Replacement

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

This DTC tests for undesired intake manifold vacuum flow to the evaporative emission (EVAP) system. The engine control module (ECM) seals the EVAP system by commanding the EVAP canister purge solenoid valve OFF and the EVAP canister vent solenoid valve ON. The ECM monitors the fuel tank pressure sensor to determine if a vacuum is being drawn on the EVAP system. If vacuum in the EVAP system is more than a predetermined value within a predetermined time, this DTC sets.

The following table illustrates the relationship between the ON and OFF states, and the Open or Closed states of the EVAP canister purge and vent solenoid valves.

Control Module Command	EVAP Canister Purge Solenoid Valve	EVAP Canister Vent Solenoid Valve
ON	Open	Closed
OFF	Closed	Open

DTCs P0106, P0107, P0108, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0451, P0452, P0453, P0454, P0464, P0608, P0609, P0641, P0651, P1516, P2101, P2119, P2120, P2122, P2123, P2125, P2127, P2128, P2135, P2138 are not set.
The ignition voltage is between 11-18 volts.
The barometric pressure (BARO) is more than 74 kPa.
The fuel level is between 15-85 percent.
The engine coolant temperature (ECT) at start-up is less than 35°C (95°F).
The intake air temperature (IAT) is between 4-30°C (39-86°F).
DTC P0496 runs once per cold start when the above conditions are met.

The ECM detects more than 10 inch H2O vacuum for 5 seconds during a non-purge condition.

DTC P0496 is a Type B DTC.

Schematic Reference

Connector End View Reference

Description and Operation

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Troubleshooting with a Test Lamp»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Wiring Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, engine OFF, seal the EVAP system using the Purge/Seal function with a scan tool.
Start the engine.
Observe the fuel tank pressure sensor with a scan tool. The Fuel Tank Pressure Sensor parameter should be less than 1.7 volts after 90 seconds. If the Fuel Tank Pressure Sensor parameter is greater than the specified range, go to «Circuit/System Testing»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-dtc-p0315-through-p1258) .
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Ignition ON, engine OFF.
Seal the EVAP system using the Purge/Seal function with a scan tool.
Start the engine.
Observe the fuel tank pressure sensor with a scan tool. The Fuel Tank Pressure Sensor parameter should be less than 1.7 volts after 90 seconds. If the Fuel Tank Pressure Sensor parameter is greater than the specified range, replace the Q12 EVAP canister purge solenoid valve.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Evaporative Emission Canister Purge Solenoid Valve Replacement

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The throttle actuator control (TAC) motor is controlled by the engine control module (ECM). The DC motor located in the throttle body drives the throttle blade. In order to decrease idle speed, along with spark and fuel delivery changes the ECM commands the throttle closed reducing air flow into the engine and the idle speed decreases. In order to increase idle speed, the ECM commands the throttle plate open allowing more air to pass the throttle plate.

DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0117, P0118, P0120, P0122, P0123, P0171, P0172, P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0221, P0222, P0223, P0230, P0300, P0336, P0442, P0446, P0449, P0452, P0453, P0455, P0462, P0463, P0496, P1516, P2101, P2135, P2176 are not set.
The engine has been running for greater than 60 s.
The engine is idling for greater than 10 s.
The AC mode state has not changed.
The power steering load state has not changed.
The transmission gear selector state has not changed.
The engine coolant temperature (ECT) is greater than -60°C (-76°F).
The intake air temperature (IAT) is greater than -20°C (-4°F).
The barometric pressure (BARO) is greater than 70 kPa.
The system voltage is between 11-18 V.
The vehicle speed is less than 4.8 km/h (2 mph).
The DTCs run continuously when the above conditions are met.

P0506

The actual idle speed is approximately 100 RPM lower than the desired idle speed.
The above condition is present for 15 s.

P0507

The actual idle speed is approximately 200 RPM greater than the desired idle speed.
The above condition is present for 15 s.

DTCs P0506 and P0507 are Type B DTCs.

Schematic Reference

Connector End View Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Wiring Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Note. The engine must first be running for greater than 60 s, then idle at a steady state for an additional 10 s before comparing the actual and desired engine idle speed parameters.

Ignition ON, observe the DTC information with a scan tool. Verify there are no other DTCs set. If a DTC is set, refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) for further diagnosis.
Idle the engine at the normal operating temperature. Compare the Desired Idle Speed to the actual Engine Speed with a scan tool. The actual Engine Speed should not be less than 100 RPM of the Desired Idle Speed or 200 RPM greater than the Desired Idle Speed.
Allow the engine to idle within the Conditions for Running the DTC. DTCs P0506 or P0507 should not set.
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Verify none of the following conditions exist

P0506

Excess deposits in the Q38 throttle body. Refer to «Throttle Body Cleaning»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-repair-instructions__throttle-body-cleaning) .
Restricted exhaust
Mechanical conditions that limits engine speed
Parasitic load on the engine--For example, a transmission condition, a belt driven accessory condition. If a condition is found, repair as necessary.

P0507

Vacuum leaks
A throttle valve that does not close correctly
Verify the correct operation of the crankcase ventilation system. Inspect for the following conditions: The routing of the positive crankcase ventilation (PCV) system Vacuum leaks in the PCV system--Refer to «Crankcase Ventilation System Inspection/Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/mechanical/#engine-mechanical-62l-diagnostic-information-and-procedures__crankcase-ventilation-system-inspectiondiagnosis) . If a condition is found, repair as necessary.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Throttle Body Cleaning

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each of the diagnostic category.

This diagnostic applies to internal microprocessor integrity conditions within the engine control module (ECM) and the throttle actuator control (TAC) system. This diagnostic also addresses if the ECM is not programmed.

The ECM monitors its ability to read and write to the memory. It also monitors a timing function. The ECM and the TAC processors are used to monitor the TAC system data. Both processors monitor the other processors data to verify that the indicated APP calculation is correct. The ECM performs an intrusive test in order to confirm that the APP signals are not shorted together. The ECM accomplishes this by pulling the APP sensor 2 low momentarily and looking for sensor 1 to also be pulled low.

Conditions for Running the DTCs

P0601, P0604

The ignition switch is in Run or Crank.
These DTCs run continuously when the above condition is met.

P0602, P0603, P062F

The ignition switch is in Run or Crank.
These DTCs run once per ignition cycle.

P0606, P0607, P060D

The ignition switch is in Run or Crank.
The system voltage is more than 6.0 V.
Reduced Engine Power is not active.
These DTCs run continuously when the above conditions are met.

P2610

The intake air temperature is between -40 to +125°C (-40 to +257°F).
DTC P2610 runs once per ignition cycle on ECM power down.

Conditions for Setting the DTCs

The ECM detects an internal failure or incomplete programming for more than 10 s.

Actions Taken When the DTC Sets

DTCs P0601, P0602, P0603, P0604, P0606, P060D, and P062F are Type A DTCs.
DTC P0607 is a Type C DTC.
DTC P2610 is a Type B DTC.

DTCs P0601, P0602, P0603, P0604, P0606, P060D, and P062F are Type A DTCs.
DTC P0607 is a Type C DTC.
DTC P2610 is a Type B DTC.

Low voltage or a momentary loss of power or ground to the ECM may cause a DTC to set.

Verify that the battery cables are clean and tight, and the battery is fully charged. Refer to «Battery Inspection/Test»(/chevrolet/camaro/v-2009-2013/remont/charging-system/#battery-charging-system-and-starting-system) .
Verify the ECM ground circuits do not have an open or high resistance.
Verify the ECM power circuits do not have an open, short to ground, or high resistance.

Schematic Reference

Connector End View Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Wiring Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Observe the DTC information with a scan tool. DTC P0601, P0602, P0603, P0604, P0606, P0607, P060D, P062F, or P2610 should not set.
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Ignition ON, clear the DTC information with a scan tool. Observe the scan tool DTC information. If DTC P0602 is set, reprogram the K20 ECM. Refer to «Control Module References»(/chevrolet/camaro/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for K20 ECM replacement, setup, and programming. If DTC P0602 resets, replace the K20 ECM.
Observe the DTC information with a scan tool. Verify that DTC P0601, P0603, P0604, P0605, P0606, P0607, P060D, P062F, or P2610 does not set. If a DTC failed this ignition, replace the K20 ECM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for ECM replacement, programming and setup

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The internal fault detection is handled inside the fuel pump control module. No external circuits are involved.

The fuel pump control module runs the program to detect an internal fault when power up is commanded. The only requirements are voltage and ground. This program runs even if the voltage is out of the valid operating range.

The fuel pump control module has detected an internal malfunction.

DTC P0601, P0602, P0603, P0604, P0606 and P062F are type A DTCs.

Description and Operation

Fuel System Description

Electrical Information Reference

«Circuit Testing»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Wiring Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Note. This DTC may be stored as a history DTC without affecting the operation of the module. If stored only as a history DTC and not retrieved as a current DTC, do not replace the module.

Verify that DTC P0602 is not set. If the DTC is set, program the K27 fuel pump control module.
Verify that DTCs P0601, P0603, P0604, P0606, and P062F are not set. If the DTCs are set, program the K27 fuel pump control module. If the DTCs reset, replace the K27 fuel pump control module.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for fuel pump control module replacement, setup, and programming

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
5 V Reference	P0641	P0641, P06A6	P0641	P06A6
Signal	P018C	P018B, P018C	P018D	P018B
Low Reference		P0641, P06A6		P06A6

The fuel pressure sensor is located on the fuel line. The fuel pressure sensor monitors the fuel pressure in the fuel line. The fuel pump control module monitors the voltage signal from the fuel pressure sensor.

The ignition is on.

The fuel pump control module detects that the fuel pressure 5 V reference is above or below a predetermined voltage threshold.

DTCs P0641 and P06A6 are Type A DTCs.

Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can help determine how many ignition cycles that the diagnostic test reported a pass and/or a fail.

Schematic Reference

Connector End View Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Description and Operation

Fuel System Description

Electrical Information Reference

«Circuit Testing»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Wiring Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Ignition OFF, disconnect harness connector of the B47 fuel pressure sensor.
Ignition OFF, test for less than 1.0 ohms between the low reference circuit terminal 2 and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K27 fuel pump control module.
Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 3 and ground. If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K27 fuel pump control module. If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K27 fuel pump control module.
If all circuits test normal, replace the B47 fuel pressure sensor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

«Fuel Pressure Sensor Replacement»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-repair-instructions)
«Control Module References»(/chevrolet/camaro/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for fuel pump control module replacement, setup, and programming

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The engine control module (ECM) has 2 internal 5 V reference circuits. Each internal reference circuit provides 5 V reference for more than one sensor. A short to ground or short to voltage on one of the external 5 V reference circuits can affect all the components connected to the same internal 5 V reference circuit.

Reduced Engine Power is not active.
The ignition is ON.
The ignition voltage is greater than 6 V.
DTCs P0641 and P0651 run continuously when the above conditions are met.

The ECM detects a voltage out of tolerance condition on the 5 V reference 1 or 2 bus for more than 0.5 s.

DTCs P0641 and P0651 are Type A DTCs.

The 5 V reference 1 circuit provides 5 V to the following sensors: Manifold absolute pressure (MAP) sensor Fuel tank pressure sensor Accelerator pedal position (APP) sensor 2 Engine oil pressure sensor Air conditioning (A/C) refrigerant pressure sensor Camshaft position sensor
The 5 V reference 2 circuit provides 5 V to the following sensors: APP sensor 1 Throttle position sensor 1 and 2 Crankshaft position sensor Brake booster vacuum sensor Clutch pedal position sensor, if equipped
It may be possible to locate the fault by disconnecting one component at a time from the affected 5 V reference circuit while viewing the 5 V Reference Circuit Status parameter on the scan tool. The scan tool parameter will change from Malfunction to OK when the source of the fault is disconnected. If all 5 V reference components have been disconnected and a fault is still indicated, the fault may exist in the wiring harness.

Schematic Reference

Connector End View Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Wiring Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Observe the scan tool 5 V reference 1 circuit status and the 5 V reference 2 circuit status parameters. Verify the parameters display OK.
Ignition ON, observe the DTC information with a scan tool. DTCs P0641 and P0651 should not set.
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Ignition OFF, disconnect the harness connector of all the sensors for the applicable DTC. Refer to «Diagnostic Aids»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-dtc-p0315-through-p1258) for the appropriate sensors.
Ignition ON, measure for 4.8-5.2 V between one of the affected 5 V reference circuits and ground. If less than the specified range, test for a short to ground on the 5 V reference circuit of each affected component. If all circuits test normal, replace the K20 ECM. If greater than the specified range, test for a short to voltage on the 5 V reference circuit of each affected component. If all circuits test normal, replace the K20 ECM.
Connect each component associated with the 5 V reference circuit, one at a time, while monitoring the appropriate scan tool 5 V Reference Voltage parameter. Verify the voltage remains between 4.8-5.2 V. If not within the specified range when a component is connected, test the signal circuit for a short to voltage. If the circuit tests normal, replace the appropriate component.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

«Accelerator Pedal Position Sensor Replacement»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-repair-instructions)
«Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement (LLT)»(/chevrolet/camaro/v-2009-2013/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) or «Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement (LS3, L99)»(/chevrolet/camaro/v-2009-2013/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning)
«Camshaft Position Sensor Replacement»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-repair-instructions)
«Clutch Pedal Position Sensor Replacement»(/chevrolet/camaro/v-2009-2013/remont/clutches-manual-hydraulic/#manual-transmission-clutch-system)
«Crankshaft Position Sensor Replacement»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-repair-instructions)
«Engine Oil Pressure Sensor and/or Switch Replacement (L99/LS3)»(/chevrolet/camaro/v-2009-2013/remont/mechanical/#engine-mechanical-62l-repair-instructions-on-vehicle)
«Fuel Tank Pressure Sensor Replacement»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-36l-repair-instructions)
«Manifold Absolute Pressure Sensor Replacement»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-repair-instructions)
«Power Brake Booster Vacuum Sensor Replacement»(/chevrolet/camaro/v-2009-2013/remont/mechanical-hydraulic/#hydraulic-brake-system)
«Throttle Body Assembly Replacement»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-repair-instructions)
«Control Module References»(/chevrolet/camaro/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for ECM replacement, setup, and programming

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provide an overview of each diagnostic category.

Circuit	Short to Ground	Open	Short to Voltage
MIL Voltage Supply	P0650	P0650
MIL Control	P0650*	P0650	P0650
*The MIL Remains ON

The malfunction indicator lamp (MIL) is located on the instrument panel cluster. The MIL informs the driver that an emission system fault has occurred and that the engine control system requires service. The engine control module (ECM) monitors the MIL control circuit for conditions that are incorrect for the commanded states of the MIL. For example, a failure condition exists if the ECM detects low voltage when the MIL is commanded OFF, or high voltage when the MIL is commanded ON.

The ignition is in the Run or Crank position.
The ignition voltage is between 11-18 V.
The ECM has commanded the MIL ON and OFF at least once during the ignition cycle.
DTC P0650 runs continuously when the ignition is ON.

The ECM detects an open, a short to ground, or a short to voltage on the circuit that controls the MIL.

DTC P0650 is a Type B DTC.

A MIL control circuit that is shorted to voltage will only set DTC P0650 when the ECM attempts to command the MIL lamp ON.
If the condition is intermittent, move the related harnesses and connectors with the engine operating. Monitor the scan tool Circuit Test Status parameters for the component. The Circuit Test Status parameter will change from OK or Not Run to Fault if there is a condition with the circuit or a connection.

Schematic Reference

«Instrument Cluster Schematics»(/chevrolet/camaro/v-2009-2013/remont/gauges-instrument-panels/#instrument-panel-system-displays-and-gauges)
«Engine Controls Schematics»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-wiring-schematic-diagrams)

Connector End View Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Wiring Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, command the MIL ON and OFF with a scan tool. The MIL should turn ON and OFF as commanded.
Ignition ON, command the MIL ON and OFF with a scan tool while observing the following control circuit status parameters: MIL Control Circuit Low Voltage Test Status MIL Control Circuit Open Test Status MIL Control Circuit High Voltage Test Status Each parameter should toggle between OK and Not Run or Not Run and OK.
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

If any other IPC indicators or gauges are inoperative, refer to «Instrument Cluster Gauges Inoperative»(/chevrolet/camaro/v-2009-2013/remont/gauges-instrument-panels/#instrument-panel-system-displays-and-gauges) .
Ignition OFF, disconnect the K20 ECM X1 harness connector. Ignition ON, the MIL should not illuminate. If the MIL is illuminated, test the MIL control circuit terminal X1-68 for a short to ground. If the circuit tests normal, replace the IPC.
Ignition ON, connect a 3 A fused jumper wire between the MIL control circuit terminal X1-68 and ground. The MIL should illuminate. If the MIL does not illuminate, test the MIL control circuit for a short to voltage, or an open/high resistance. If the circuit tests normal, replace the IPC/bulb.
If all circuits/connections test normal, replace the K20 ECM.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for ECM and instrument cluster replacement, setup, and programming

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit	Short to Ground	Open/High Resistance	Short to Voltage
Relay Coil Supply Voltage	P0685	P0685
Relay Control Circuit	P0685	P0685, P1682	P0685, P0690, P1682
Relay Feedback Circuit			P0690

Powertrain Relay

Circuit	Short to Ground	Open/High Resistance	Short to Voltage
Ignition 1 Signal	1	1	2
1. Will cause a No Crank condition. 2. Engine continues to operate with ignition OFF.

Run/Crank Relay

Circuit	Short to Ground	Open	Short to Voltage
Operating Conditions: Component commanded OFF Parameter Normal Range: The following illustrates the normal parameter state with no circuit conditions: Component OFF - OK for Open/Short Gnd test and Not Run for Short to Volts test Component ON - Not Run for Open/Short Gnd test and OK for Short to Volts test
Battery Voltage		Fault
EC Ignition Relay Control Circuit	Fault	Fault	Not Run

Engine Controls Ignition Relay Control Circuit Low Voltage, Open, and High Voltage Test Status

Circuit	Short to Ground	Open	Short to Voltage
Operating Conditions: Component commanded ON Parameter Normal Range: The following illustrates the normal parameter state with no circuit conditions: Component OFF - OK for Open/Short Gnd test and Not Run for Short to Volts test Component ON - Not Run for Open/Short Gnd test and OK for Short to Volts test
Battery Voltage		Not Run
EC Ignition Relay Control Circuit	Not Run	Not Run	Fault

There are 2 ignition voltage circuits supplied to the engine control module (ECM). One is supplied by the powertrain relay and the other is supplied by the Run/Crank relay. The ECM monitors and compares the ignition voltage supplied by the 2 relays.

P0685

The ignition is ON.
Ignition 1 signal voltage is between 11-32 V.
The DTC runs continuously when the above conditions are met.

P0690

P0685 is not set.
The powertrain relay is commanded on.
The DTC runs continuously when the above conditions are met.

P1682

The powertrain relay is commanded on.
Ignition 1 Signal voltage is greater than 6 V.
The DTC runs continuously when the above conditions are met.

P0685

The ECM detects that the commanded state of the driver and the actual state of the control circuit do not match for greater than 2 s.

P0690

The ECM detects the engine controls ignition relay feedback circuit is greater than 2 V when the relay is commanded OFF.
The ECM detects the engine controls ignition relay feedback circuit is greater than 18 V when the relay is commanded ON.
The condition is present for greater than 2 s.

P1682

The ECM detects that the voltage level difference is greater than 3 V between the 2 ignition voltage circuits for less than 1 s.

DTCs P0685 and P0690 are Type B DTCs.
DTC P1682 is a Type A DTC.

DTCs P0685 and P0690 are Type B DTCs.
DTC P1682 is a Type A DTC.

Schematic Reference

«Engine Controls Schematics»(/chevrolet/camaro/v-2009-2013/remont/testing-diagnostics/#engine-controls-and-fuel-62l-wiring-schematic-diagrams)
«Power Distribution Schematics»(/chevrolet/camaro/v-2009-2013/remont/body-electrical/#wiring-systems-and-power-management-wiring-schematics-and-wiring-harness-routing-diagrams)

Connector End View Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Electrical Information Reference

«Circuit Testing»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
«Connector Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
«Electrical Center Identification Views»(/chevrolet/camaro/v-2009-2013/remont/electrical-component-locations/#wiring-systems-and-power-management-component-locator-electrical-center-identification-views)
«Testing for Intermittent Conditions and Poor Connections»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures)
«Wiring Repairs»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

DTC Type Reference

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, command the Engine Controls Ignition Relay ON and OFF with a scan tool while observing the following Engine Controls Ignition Relay control circuit status parameters: Engine Controls Ignition Relay Control Circuit Low Voltage Test Status Engine Controls Ignition Relay Control Circuit Open Test Status Engine Controls Ignition Relay Control Circuit High Voltage Test Status Each parameter should display OK or Not Run in each commanded state.
Ignition ON, view the DTC information with a scan tool. DTC P0685, P0690, or P1682 should not set.
Ignition ON, observe the scan tool Ignition 1 Voltage Signal and the Engine Controls Ignition Relay Feedback Signal parameters. There should be less than 3 V difference between the two parameters.
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Note. You must perform the Circuit/System Verification before proceeding with Circuit/System Testing unless sent here from Engine Cranks But Does Not Run.

Ignition OFF, disconnect the KR75 powertrain relay.
Verify a test lamp illuminates between ground and the relay circuit terminals listed below: Terminal 85 Terminal 30 If the test lamp does not illuminate, test the relay battery voltage circuit for an open/high resistance.
Ignition ON, verify that a test lamp does not illuminate between the ignition voltage circuit terminal 87 and ground. If the test lamp illuminates, test the ignition voltage circuit for a short to voltage.
Connect a 20 A fused jumper wire between the relay switch B+ circuit terminal 30 and the relay switch ignition voltage circuit terminal 87.
Ignition ON, observe the scan tool EC Ignition Relay Feedback Signal parameter. The ECM should communicate, and the parameter should display B+. If not the specified value, or the ECM does not communicate, test the ignition voltage circuit between the powertrain relay and the ECM for a short to ground or for an open/high resistance. If the circuit/connections test normal, replace the K20 ECM.
Ignition OFF, connect a DMM set to the diode setting between control circuit terminal 86 and ground. Verify the DMM displays OL. If not the specified value, test the control circuit for a short to ground. If the circuit tests normal, replace the K20 ECM.
Ignition ON, verify the DMM displays less than 1 V. If not the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K20 ECM.
If all circuits test normal, replace the KR75 powertrain relay.

Test for one of the following resistance specifications between terminals 85 and 86 of the KR75 powertrain relay: 70-110 ohms 200-250 ohms If not within the specified range, replace the KR75 powertrain relay.
Test for infinite resistance between the following terminals of the KR75 powertrain relay: 30 and 86 30 and 87 30 and 85 85 and 87 If not the specified value, replace the KR75 powertrain relay.
Install a 20 A fused jumper wire between relay terminal 85 and 12 V. Install a jumper wire between relay terminal 86 and ground. Test for less than 2 ohms between terminals 30 and 87. If greater than the specified range, replace the KR75 powertrain relay.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

«Relay Replacement (Attached to Wire Harness)»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-repair-instructions) or «Relay Replacement (Within an Electrical Center)»(/chevrolet/camaro/v-2009-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-repair-instructions)
«Control Module References»(/chevrolet/camaro/v-2009-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for ECM replacement, setup, and programming

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) Prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The fuel pump control module uses the serial data network to signal the engine control module (ECM) that the fuel pump control module is requesting malfunction indicator lamp (MIL) illumination. A DTC is set in the fuel pump control module, and the request for MIL illumination is sent when the fuel pump control module determines that a failure that affects emissions has occurred in the fuel pump control system. When the ECM receives the message from the fuel pump control module, DTC P069E will set in the ECM.

The ignition is ON, or the engine is running.

The fuel pump control module requests the ECM to illuminate the MIL.

DTC P069E is a Type A DTC.
DTC P069E will continue to be current or active as long as the fuel pump control module is requesting MIL illumination.

DTC P069E is a Type A DTC.

Communication codes, U-codes, as well as powertrain codes, P-codes, set in the fuel pump control module will cause the fuel pump control module to request DTC P069E to be set in the ECM.

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References

DTC P069E is an informational DTC. If there are no engine controls or communication DTCs, refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) for diagnosis of fuel pump control module DTCs.
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each of the diagnostic category.

The diagnostic trouble code (DTC) indicates that an emission related transmission DTC set in the transmission control module (TCM). The engine control module (ECM) receives the TCM information over the serial data circuit. The ECM turns ON the malfunction indicator lamp (MIL) when the TCM sends a message over the serial data circuit requesting MIL illumination. The DTC information for the ECM will only display DTC P0700, but the Freeze Frame/Failure Records data will display the transmission DTC that set.

The ignition is ON or the engine is operating.
DTC P0700 runs continuously.

The ECM receives a serial data message from the TCM requesting the ECM to turn ON the MIL lamp.

DTC P0700 is a Type A DTC.

Communication codes, U-codes, as well as powertrain codes, P-codes, set in the TCM can cause the TCM to request DTC P0700 to be set in the ECM.

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References

DTC P0700 is an informational DTC. If there are no engine controls or communication DTCs, refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) for diagnosis of TCM DTCs.
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Perform the «Diagnostic System Check - Vehicle»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
Review «Strategy Based Diagnosis»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
«Diagnostic Procedure Instructions»(/chevrolet/camaro/v-2009-2013/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The engine control module (ECM) supplies voltage to the fuel pump control module when the ECM detects that the ignition is on. The voltage from the ECM to the fuel pump control module remains active for 2 seconds, unless the engine is in crank or run. While this voltage is being received, the fuel pump control module supplies a varying voltage to the fuel tank pump module in order to maintain the desired fuel rail pressure.

The engine is running.

The fuel pump control module detects an over-temperature fault.

DTCs P064A and P1255 are Type A DTCs.

Schematic Reference

Connector End View Reference