Note. For circuit reference, see WIRING DIAGRAMS article.
Home/Pontiac/Montana/Pontiac Montana I (1997-2005)/Repair manual/Testing & Diagnostics/DTC P0121: THROTTLE POSITION SENSOR PERFORMANCE
Contents
Wiring diagrams Section: Testing & Diagnostics- Engine Controls Self-Diagnostics - 3.4L: Overview
- Engine Controls Self-Diagnostics - 3.4L: Diagnosis
- Engine Controls Self-Diagnostics - 3.4L: Component Locations
- Engine Controls Self-Diagnostics - 3.4L: Other
- DTC P0030: HO2S NO. 1 HEATER CONTROL CIRCUIT VOLTAGE GREATER THAN PCM INTERNAL DRIVER CAPACITY
- DTC P0101: MASS AIRFLOW SENSOR SYSTEM PERFORMANCE
- DTC P0102: MASS AIRFLOW SENSOR CIRCUIT - LOW FREQUENCY
- DTC P0103: MASS AIRFLOW SENSOR CIRCUIT - HIGH FREQUENCY
- DTC P0107: MANIFOLD ABSOLUTE PRESSURE SENSOR CIRCUIT - LOW VOLTAGE
- DTC P0108: MANIFOLD ABSOLUTE PRESSURE SENSOR CIRCUIT - HIGH VOLTAGE
- DTC P0112: INTAKE AIR TEMPERATURE SENSOR CIRCUIT - LOW VOLTAGE
- DTC P0113: INTAKE AIR TEMPERATURE SENSOR CIRCUIT - HIGH VOLTAGE
- DTC P0116: ENGINE COOLANT TEMPERATURE & INTAKE AIR TEMPERATURE DIFFERENCE OUT-OF-RANGE ("A" & "B" SERIES)
- DTC P0117: ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT - LOW VOLTAGE
- DTC P0118: ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT - HIGH VOLTAGE
- DTC P0121: THROTTLE POSITION SENSOR PERFORMANCE
- DTC P0122: THROTTLE POSITION SENSOR CIRCUIT - LOW VOLTAGE
- DTC P0123: THROTTLE POSITION SENSOR CIRCUIT - HIGH VOLTAGE
- DTC P0125: ENGINE COOLANT TEMPERATURE EXCESSIVE TIME TO ENTER CLOSED-LOOP FUEL CONTROL
- DTC P0128: ENGINE COOLANT FAILS TO REACH PRESET TARGET TEMPERATURE
- DTC P0130: PCM DETECTS AN ACTIVE HO2S WITH IMPROPER VOLTAGE
- DTC P0131: HEATED OXYGEN SENSOR NO. 1 CIRCUIT - LOW VOLTAGE
- DTC P0132: HEATED OXYGEN SENSOR NO. 1 CIRCUIT - HIGH VOLTAGE
- DTC P0133: HEATED OXYGEN SENSOR NO. 1 CIRCUIT - SLOW RESPONSE
- DTC P0134: HEATED OXYGEN SENSOR NO. 1 CIRCUIT INSUFFICIENT ACTIVITY
- DTC P0135: HEATED OXYGEN SENSOR NO. 1 HEATER PERFORMANCE
- DTC P0137: HEATED OXYGEN SENSOR NO. 2 CIRCUIT - LOW VOLTAGE
- DTC P0138: HEATED OXYGEN SENSOR NO. 2 CIRCUIT - HIGH VOLTAGE
- DTC P0140: HEATED OXYGEN SENSOR NO. 2 CIRCUIT INSUFFICIENT ACTIVITY ("A" & "B" SERIES)
- DTC P0140: HEATED OXYGEN SENSOR NO. 2 CIRCUIT INSUFFICIENT ACTIVITY ("U" SERIES)
- DTC P0141: HEATED OXYGEN SENSOR NO. 2 HEATER CIRCUIT
- DTC P0171: FUEL TRIM SYSTEM - LEAN
- DTC P0201-206: INJECTOR CONTROL CIRCUIT
- DTC P0230: FUEL PUMP CONTROL CIRCUIT
- DTC P0300: ENGINE MISFIRE DETECTED
- DTC P0325: KNOCK SENSOR MODULE CIRCUIT
- DTC P0327: KNOCK SENSOR CIRCUIT - NO ACTIVITY
- DTC P0336: CRANKSHAFT POSITION SENSOR CIRCUIT PERFORMANCE
- DTC P0341: CAMSHAFT POSITION SENSOR CIRCUIT
- DTC P0401: EGR SYSTEM - INSUFFICIENT FLOW
- DTC P0403: EGR SOLENOID CONTROL CIRCUIT
- DTC P0404: EGR OPEN POSITION PERFORMANCE
- DTC P0405: EGR SENSOR CIRCUIT - LOW VOLTAGE
- DTC P0440: EVAPORATIVE EMISSION SYSTEM
- DTC P0442: EVAPORATIVE EMISSION CONTROL SYSTEM - SMALL LEAK DETECTED
- DTC P0443: EVAPORATIVE PURGE SOLENOID CONTROL CIRCUIT
- DTC P0446: EVAPORATIVE EMISSION VENT SYSTEM PERFORMANCE ("A" & "B" SERIES)
- DTC P0446: EVAPORATIVE EMISSION VENT SYSTEM PERFORMANCE ("U" SERIES)
- DTC P0449: EVAPORATIVE EMISSION VENT SOLENOID CONTROL CIRCUIT
- DTC P0452: FUEL TANK PRESSURE SENSOR CIRCUIT - LOW VOLTAGE
- DTC P0453: FUEL TANK PRESSURE SENSOR CIRCUIT - HIGH VOLTAGE
- DTC P0462: FUEL LEVEL SENSOR CIRCUIT - LOW VOLTAGE
- DTC P0463: FUEL LEVEL SENSOR CIRCUIT - HIGH VOLTAGE
- DTC P0480: COOLING FAN RELAY NO. 1 CONTROL CIRCUIT
- DTC P0481: COOLING FAN RELAY NO. 2 CONTROL CIRCUIT
- DTC P0506: IDLE SPEED - LOW
- DTC P0507: IDLE SPEED - HIGH
- DTC P0530: A/C REFRIGERANT PRESSURE SENSOR CIRCUIT
- DTC P0560: SYSTEM VOLTAGE
- DTC P1106: MANIFOLD ABSOLUTE PRESSURE SENSOR CIRCUIT INTERMITTENT HIGH VOLTAGE
- DTC P1107: MANIFOLD ABSOLUTE PRESSURE SENSOR CIRCUIT INTERMITTENT LOW VOLTAGE
- DTC P1111: INTAKE AIR TEMPERATURE SENSOR CIRCUIT INTERMITTENT HIGH VOLTAGE
- DTC P1112: INTAKE AIR TEMPERATURE SENSOR CIRCUIT INTERMITTENT LOW VOLTAGE
- DTC P1114: ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT INTERMITTENT LOW VOLTAGE
- DTC P1115: ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT INTERMITTENT HIGH VOLTAGE
- DTC P1121: THROTTLE POSITION SENSOR CIRCUIT INTERMITTENT HIGH VOLTAGE
- DTC P1122: THROTTLE POSITION SENSOR CIRCUIT INTERMITTENT LOW VOLTAGE
- DTC P1133: HEATED OXYGEN SENSOR NO. 1 - INSUFFICIENT SWITCHING
- DTC P1134: HEATED OXYGEN SENSOR NO. 1 TRANSITION TIME RATIO
- DTC P1189: ENGINE OIL PRESSURE SWITCH SIGNAL CIRCUIT
- DTC P1336: CRANKSHAFT POSITION SYSTEM VARIATION NOT LEARNED
- DTC P1351: IGNITION CONTROL CIRCUIT - HIGH VOLTAGE
- DTC P1352: IGNITION BY-PASS CIRCUIT - HIGH VOLTAGE
- DTC P1361: IGNITION CONTROL CIRCUIT - LOW VOLTAGE
- DTC P1362: IGNITION BY-PASS CIRCUIT - LOW VOLTAGE
- DTC P1374: CRANKSHAFT POSITION HIGH-TO-LOW RESOLUTION FREQUENCY CORRELATION
- DTC P1380: MISFIRE DETECTED - ROUGH ROAD DATA NOT AVAILABLE
- DTC P1381: MISFIRE DETECTED - NO COMMUNICATIONS WITH BRAKE CONTROL MODULE
- DTC P1404: EGR VALVE CLOSED POSITION PERFORMANCE
- DTC P1441: EVAPORATIVE EMISSION SYSTEM VACUUM IS GREATER THAN PREDETERMINED VALUE ("A" & "B" SERIES)
- DTC P1441: EVAPORATIVE EMISSION SYSTEM FLOW DURING NON-PURGE ("U" SERIES)
- DTC P1546: A/C CLUTCH RELAY CONTROL CIRCUIT
- DTC P1571: TRACTION CONTROL TORQUE REQUEST CIRCUIT
- DTC P1626: THEFT DETERRENT FUEL ENABLE SIGNAL LOST
- DTC P1630: THEFT DETERRENT LEARN MODE ACTIVE
- DTC P1631: THEFT DETERRENT START ENABLE SIGNAL NOT CORRECT
- DTC P1635: 5-VOLT REFERENCE "A" CIRCUIT
- DTC P1639: 5-VOLT REFERENCE 2 CIRCUIT ("A" & "B" SERIES)
- DTC P1639: 5-VOLT REFERENCE "B" CIRCUIT ("U" SERIES)
- DTC P1640: EXCESSIVE VOLTAGE DETECTED ON OUTPUT DRIVER NO. 1 CIRCUIT
- DTC P1650: EXCESSIVE VOLTAGE DETECTED ON OUTPUT DRIVER NO. 2 CIRCUIT
- DTC P1660: EXCESSIVE VOLTAGE DETECTED ON OUTPUT DRIVER NO. 3 CIRCUIT
- DTC P1670: EXCESSIVE VOLTAGE DETECTED ON OUTPUT DRIVER NO. 4 CIRCUIT
- DTC P1689: TRACTION CONTROL DELIVERED TORQUE OUTPUT CIRCUIT
- Engine Controls - Trouble Shooting - No Codes: Diagnosis
- Engine Controls - Trouble Shooting - No Codes: Other
- Engine Controls - System & Component Testing: Specifications
- Engine Controls - System & Component Testing: Overview
- Engine Controls - System & Component Testing: Diagnosis
- Engine Controls - System & Component Testing: Wiring
- Engine Controls - System & Component Testing: Component Locations
- Engine Controls - System & Component Testing: Other
- Engine Controls - Basic Diagnostic Procedures: Overview
- Engine Controls - Basic Diagnostic Procedures: Diagnosis
- Engine Controls - Basic Diagnostic Procedures: Other
- A/c Compressor
- Abbreviations
- Accessory Drive Belts
- Adjustments
- Airbag
- Anti-Lock/traction Control
- Application
- Automatic Trans
- Automatic Transaxle -- 4T65-E - Diagnosis & Testing: Overview
- Automatic Transaxle -- 4T65-E - Service & Repair
- Automatic Transaxle -- 4T65-E - Service & Repair: Removal & Installation
- Automatic Transaxle Overhaul & Testing - 4T65-E
- Automatic Transaxle Overhaul & Testing - 4T65-E: Overhaul
- Auxiliary Emission Control Systems
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