Ignition off
Reinstall the components, reconnect the connectors etc.
Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-440264-S06906222842011121400000)
Do not switch off the engine after the test drive
Connect the car to VIDA again. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S)
There must not be any faults when the diagnostic is complete.

Was a fault detected?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S03645782122011121400000)

Fault-tracing information

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reinstall the components, reconnect the connectors etc.
Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-440264-S06906222842011121400000)
Do not switch off the engine after the test drive
Connect the car to VIDA again. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S)
There must not be any faults when the diagnostic is complete.

Was a fault detected?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S22181652352011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reinstall the components, reconnect the connectors etc.
Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-440264-S06906222842011121400000)
Do not switch off the engine after the test drive
Connect the car to VIDA again. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S)
There must not be any faults when the diagnostic is complete.

Was a fault detected?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S37231420972011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reinstall the components, reconnect the connectors etc.
Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-440264-S06906222842011121400000)
Do not switch off the engine after the test drive
Connect the car to VIDA again. Read off the diagnostic trouble code (DTC) status for the front heated oxygen sensor (HO2S)
There must not be any faults when the diagnostic is complete.

Was a fault detected?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S05768868442011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

Reinstall the connectors, components etc.
Start the engine and run it to normal operating temperature
Read off the fuel temperature sensor signal. Check that the signal is within its permitted range. The signal is measured in the fuel rail for the injectors.

Is the signal OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S38587139112011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components
Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S41916406062011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Faulty signal. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components
Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S22777352632011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Faulty signal. Permanent fault

See Faulty signal. Permanent fault

Checking the connector

CAUTION

Do not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

Ignition off
Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation
Reinstall the components, reconnect the connectors etc.
Start the engine. Allow the engine to idle. Read off the signal for the rear heated oxygen sensor (HO2S). NOTE: It may take up to approximately 3 minutes before fuel trim has begun and the signal can be read off. Check that the signal is within its permitted range. The signal must be free of interference and between 0.6 - 0.3 V. If the signal is now OK this indicates that the fault was caused by a poor connection in the connector. Other information: To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) To access or replace the heated oxygen sensor (HO2S), see «Heated oxygen sensor (HO2S), replacing»(ref-461749-S04698377542012040200000) For information about signals on 5 cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000) For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) . See «Contents»(ref-440209-S18666729612011121400000) .

Is the signal OK?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking components and wiring»(ref-440281-S23291221872011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components
Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S26811593112011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Signal missing. Intermittent fault

See Signal missing. Intermittent fault

CAUTION

Do not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

Ignition off
Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation
Reinstall the components, reconnect the connectors etc.
Start the engine. Allow the engine to idle. Read off the signal for the rear heated oxygen sensor (HO2S). NOTE: It may take up to approximately 3 minutes before fuel trim has begun and the signal can be read off. Check that the signal is within its permitted range. The signal must be free of interference and between 0.6 - 0.3 V. If the signal is now OK this indicates that the fault was caused by a poor connection in the connector. Other information: To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) To access or replace the heated oxygen sensor (HO2S), see «Heated oxygen sensor (HO2S), replacing»(ref-461749-S04698377542012040200000) For information about signals on 5 cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000) For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) . See «Contents»(ref-440209-S18666729612011121400000) .

Is the signal OK?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking components and wiring»(ref-440281-S32871178282011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components
Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S25731941702011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Signal missing. Permanent fault

See Signal missing. Permanent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components
Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S39335750002011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Signal too high. Intermittent fault

See Signal too high. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components
Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S16191599392011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Signal too high. Permanent fault

See Signal too high. Permanent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components
Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S39555790092011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Fault-tracing

See Fault-tracing

Checking the status

Ignition on. Check whether the fault is permanent or intermittent by reading off the signal from the fuel pressure sensor. Check that the signal is within its permitted range. The signal is measured in the fuel rail for the injectors. The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.

Continue Refer to «Checking components and wiring»(ref-440281-S01626834522011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Reinstall the connectors, components etc.
Start the engine and run it to normal operating temperature
Read off the fuel temperature sensor signal. Check that the signal is within its permitted range. The signal is measured in the fuel rail for the injectors.

Is the signal OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S05362086182011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Fault-tracing

Check whether the fault is permanent or intermittent by reading the signals from the fuel, outside and engine temperature sensors.

Start the engine.

Check that the fuel temperature is within its permitted range. The fuel temperature should not be lower than the outdoor temperature and a maximum of 40 °C above the engine temperature.

The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.

HINT: Remove the fuel temperature sensor, but let the connector remain connected. The fuel temperature sensor is integrated in the fuel pressure sensor. The sensor should then show the same temperature as the outdoor temperature.

Continue Refer to «Checking the component and wiring»(ref-440281-S17275743222011121400000)

Scheme 142

Scheme 142: Checking the component and wiring

Scheme 143

Ignition off.
Disconnect the fuel temperature sensor connector.
Check the connectors. Check for loose connections. Check for contact resistance. Check for oxidation. Check the resistance of the sensor between #1 and #2 (to the sensor). Remedy as necessary. Other information See «Connecting the breakout box»(ref-440211-S03702023042011121400000) See «Signal specification»(ref-440214-S33124753252011121400000) See «Component specifications»(ref-461750-S34427939622012040200000) See «Fuel pressure sensor, replacement»(ref-440263-S40470711862011121400000) See «Checking wiring and terminals»(ref-440209-S33835172972011121400000)

Continue Refer to «Verification»(ref-440281-S39651229482011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reconnect the connectors, reinstall components etc.
Ignition on. Read off the fuel temperature sensor signal. Check that the signal is within its permitted range.

Is the value OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S30689319092011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Checking for air leakage in the exhaust system

Check for air leakage. See Checking for air leakage in the exhaust system .

Remedy as necessary.

Scheme 144

Scheme 144: Checking for air leakage in the exhaust system

Was there any air leakage?

YES Repair air leakage as necessary
NO Refer to «Replacing the component»(ref-440281-S12824742722011121400000)

Replacing the component

Try a new heated oxygen sensor (HO2S).

Other information

To access or replace the heated oxygen sensor (HO2S) for the C70, S70, V70 -2000 and V70XC, see «Adapter wiring switch, replacing»(ref-461748-S13075222492012040200000) . For other models, see «Heated oxygen sensor (HO2S), replacing»(ref-461749-S04698377542012040200000)
To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000)
For information about signals on 5 cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000)
For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Verification»(ref-440281-S18357635172011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S10225429902011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Permanent fault

See Permanent fault

Control module previously registered a fault. The fault is now no longer present.

Continue Refer to «Information»(ref-440281-S17140655172011121400000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal too high. Intermittent fault

Check for air leakage according to Checking for air leakage in the exhaust system .

Remedy as necessary.

Was there any air leakage?

YES Repair air leakage as necessary
NO Refer to «Replacing component»(ref-440281-S02604872012011121400000)

Replacing component

Try a new heated oxygen sensor (HO2S) for 5 cylinder engines according to Replacing lambda probes or 6 cylinder according to Heated oxygen sensors (HO2S), replacing .

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
For information about signals on 5-cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000) .
For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Verification»(ref-440281-S34240708212011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S32491766722011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too high. Permanent fault

See Permanent fault

See Fault-tracing

Check whether the problem is permanent or intermittent by reading the signals from the fuel, inlet and engine temperature sensors.

Note. In order for the correct values to be shown, reading of the temperatures must take place at the moment of start.

Start the engine.

Check that the fuel temperature is within its permitted range. The fuel temperature should not be lower than the outdoor temperature and a maximum of 10 °C above the engine temperature.

The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.

Continue Refer to «Checking the component and wiring»(ref-440281-S05310928592011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reconnect the connectors, reinstall components etc.
Ignition on. Read off the fuel temperature sensor signal. Check that the signal is within its permitted range.

Is the value OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S33861977132011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Fault-tracing

Ignition off
Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation
Reinstall the components, reconnect the connectors etc.
Start the engine. Allow the engine to idle. Read off the status of the diagnostic trouble code (DTC) for the rear heated oxygen sensor (HO2S). The text "NOT READY" is displayed if the diagnosis is running. Other information For information about signals on 5 cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000) For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) . To access or replace the heated oxygen sensor (HO2S), see «Heated oxygen sensor (HO2S), replacing»(ref-461749-S04698377542012040200000) See «Checking wiring and terminals»(ref-440209-S33835172972011121400000) .

Is "FAULT NOT DETECTED" displayed?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking components and wiring»(ref-440281-S18436517722011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if the diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S16216792042011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Signal missing

See Signal missing

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if the diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S10031888862011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Signal too high

See Signal too high

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if the diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S10155911192011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Signal too low

See Signal too low

Check the connector for the rear heated oxygen sensor (HO2S). Check for contact resistance and oxidation. Remedy if necessary.

Try a new rear heated oxygen sensor (HO2S) if the above corrective action does not remedy the fault.

Other information

To access or replace the heated oxygen sensor (HO2S), see «Heated oxygen sensor (HO2S), replacing»(ref-461749-S04698377542012040200000)
See «Checking wiring and terminals»(ref-440209-S33835172972011121400000) .

Continue Refer to «Verification»(ref-440281-S11446889192011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reinstall the components, reconnect the connectors etc.
Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-440264-S06906222842011121400000)
Do not switch off the engine after the test drive
Connect the car to VIDA again. Read off the diagnostic trouble code (DTC) status for the rear heated oxygen sensor (HO2S)
There must not be any faults when the diagnostic is complete.

Was a fault detected?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S22658004932011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Control module previously registered a fault. The fault is now no longer present.

Continue Refer to «Information»(ref-440281-S32003202622011121400000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Faulty signal. Intermittent fault

Ignition off. The control module has registered a fault in the heated oxygen sensor (HO2S). Try a new heated oxygen sensor (HO2S) 5 cylinder according to «Replacing lambda probes»(ref-461749-S07123892362012040200000) or 6 cylinder engines according to «Heated oxygen sensors (HO2S), replacing»(ref-440280-S17464517122011121400000) .

Continue Refer to «Information»(ref-440281-S11331329562011121400000)

In case of this defect, troubleshooting is not followed by verification.

The information can be displayed again or the fault-tracing for this fault can be interrupted.

See Faulty signal. Permanent fault

Checking cables and connectors

Check heated oxygen sensor (HO2S) connector for contact resistance and oxidation according to Contact resistance and oxidation and loose connections according to Loose connections (terminals)

Check signal cable between heated oxygen sensor (HO2S) #2 and control module #A35 (#A35) and power supply between system relay #3 and heated oxygen sensor (HO2S) #1 for an intermittent open-circuit according to Open-circuit, intermittent faults .

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
To access/replace the heated oxygen sensor (HO2S) for 5 cylinder engines, see «Replacing lambda probes»(ref-461749-S07123892362012040200000) .
To access/replace the heated oxygen sensor (HO2S) for 6 cylinder engines, see «Heated oxygen sensors (HO2S), replacing»(ref-440280-S17464517122011121400000) .
For information about signals on 5-cyl engines, see «Signal specification»(ref-440214-S33124753252011121400000) .
For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Information»(ref-440281-S24935911412011121400000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal missing. Intermittent fault

Checking connector

Ignition off
Check heated oxygen sensor (HO2S) connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-461653-S26956869552012040200000) .
Reinstall components, reconnect connectors etc.
Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if the diagnosis is underway. Other information To access/replace the heated oxygen sensor (HO2S) for 5 cylinder engines, see «Replacing lambda probes»(ref-461749-S07123892362012040200000) . To access/replace the heated oxygen sensor (HO2S) for 6 cylinder engines, see «Heated oxygen sensors (HO2S), replacing»(ref-440280-S17464517122011121400000) . For information about signals on 5-cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000) . For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Is FAULT NOT REGISTERED displayed?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking wiring and components»(ref-440281-S10965698612011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if the diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S27435159062011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal missing. Permanent fault

Checking cables

Check signal cable between heated oxygen sensor (HO2S) #2 and control module #A35 (#A35) for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
To access/replace the heated oxygen sensor (HO2S) for 5 cylinder engines, see «Replacing lambda probes»(ref-461749-S07123892362012040200000) .
To access/replace the heated oxygen sensor (HO2S) for 6 cylinder engines, see «Heated oxygen sensors (HO2S), replacing»(ref-440280-S17464517122011121400000) .
For information about signals on 5-cyl engines, see «Signal specification»(ref-440214-S33124753252011121400000) .
For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Information»(ref-440281-S39316182192011121400000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal too high. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if the diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S40262662512011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too high. Permanent fault

Check signal cable between heated oxygen sensor (HO2S) #2 and control module #A35 (#A35) for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults .

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
To access/replace the heated oxygen sensor (HO2S) for 5 cylinder engines, see «Replacing lambda probes»(ref-461749-S07123892362012040200000) .
To access/replace the heated oxygen sensor (HO2S) for 6 cylinder engines, see «Heated oxygen sensors (HO2S), replacing»(ref-440280-S17464517122011121400000) .
For information about signals on 5-cyl engines, see «Signal specification»(ref-440214-S33124753252011121400000) .
For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Information»(ref-440281-S39010353952011121400000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Signal too low. Intermittent fault

See Signal too low. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if the diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S18151461922011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Signal too low. Permanent fault

See Signal too low. Permanent fault

Faulty signal

See Faulty signal

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Faulty signal. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S09286881982011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Faulty signal. Permanent fault

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal missing. Intermittent fault

CAUTION

Do not apply rust solvent spray or grease to the heated oxygen sensor (HO2S) connector.

Ignition off
Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation
Reinstall the components, reconnect the connectors etc.
Start the engine. Allow the engine to idle. Read off the signal for the rear heated oxygen sensor (HO2S). NOTE: It may take up to approximately 3 minutes before fuel trim has begun and the signal can be read off. Check that the signal is within its permitted range. There must be no interference in the signal and it must be above 0.6 V or below 0.3 V. If the signal is now OK this indicates that the fault was caused by a poor connection in the connector. Other information: To access or replace the heated oxygen sensor (HO2S), see «Heated oxygen sensor (HO2S), replacing»(ref-461749-S04698377542012040200000) For information about signals: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) . See «Contents»(ref-440209-S18666729612011121400000) .

Is the signal OK?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking components and wiring»(ref-440281-S32397102462011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S15178259122011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal missing. Permanent fault

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal too high. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S22256798842011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too high. Permanent fault

Check for air leakage. See Checking for air leakage in the exhaust system

Remedy as necessary.

Was there any air leakage?

YES Repair air leakage as necessary
NO Refer to «Replacing the component»(ref-440281-S19244465902011121400000)

Try a new heated oxygen sensor (HO2S). See Heated oxygen sensor (HO2S), replacing .

Other information

To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000)
For information about signals on 5 cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000)
For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Verification»(ref-440281-S38684821972011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S39866936412011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Permanent fault

Control module previously registered a fault. The fault is now no longer present.

Continue Refer to «Information»(ref-440281-S03742859652011121400000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal too high. Intermittent fault

Check for air leakage according to Checking for air leakage in the exhaust system

Remedy as necessary.

Was there any air leakage?

YES Repair air leakage as necessary
NO Refer to «Replacing component»(ref-440281-S13504195412011121400000)

Try a new heated oxygen sensor (HO2S) for 5 cylinder engines according to Replacing lambda probes or 6 cylinder according to Heated oxygen sensors (HO2S), replacing .

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
For information about signals on 5-cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000) .
For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Verification»(ref-440281-S02876869242011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Test drive car as follows: A/C on Drive the car so that idle, normal and high speeds are reached. Let the car operate in these phases for a few minutes. Accelerate at full throttle a number of times so that high boost pressure is reached (applies only to turbo models). Total test drive time must be 15 minutes. NOTE: After test driving the engine should not be turned off. The test drive must be carried out again. Connect VIDA again and read out the heated oxygen sensor (HO2S) diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S08573157562011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too high. Permanent fault

Ignition off
Check the heated oxygen sensor (HO2S) connector. Check for contact resistance and oxidation
Reinstall the components, reconnect the connectors etc.
Start the engine. Allow the engine to idle. Read off the status of the diagnostic trouble code (DTC) for the rear heated oxygen sensor (HO2S). The text "NOT READY" is displayed if the diagnosis is running. Other information To access or replace the heated oxygen sensor (HO2S), see «Heated oxygen sensors (HO2S), replacing»(ref-440280-S17464517122011121400000) For information about signals: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) . See «Contents»(ref-440209-S18666729612011121400000) .

Is "FAULT NOT DETECTED" displayed?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking components and wiring»(ref-440281-S38265079142011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S24686237952011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S14538105002011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S40672377912011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check the connector for the rear heated oxygen sensor (HO2S) (bank 2). Check for contact resistance and oxidation. Remedy if necessary.

Try a new rear heated oxygen sensor (HO2S) (bank 2) if the fault is not remedied.

Other information

To access or replace the heated oxygen sensor (HO2S), see «Heated oxygen sensor (HO2S), replacing»(ref-461749-S04698377542012040200000)
See «Contents»(ref-440209-S18666729612011121400000)

Continue Refer to «Verification»(ref-440281-S05346825872011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reinstall the components, reconnect the connectors etc.
Test drive the car according to the TRIP schedule, see «Verifying repairs»(ref-440264-S06906222842011121400000)
Do not switch off the engine after the test drive
Connect the car to VIDA again. Read off the diagnostic trouble code (DTC) status for the rear heated oxygen sensor (HO2S)
There must not be any faults when the diagnostic is complete.

Was a fault detected?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S37149519532011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Control module previously registered a fault. The fault is now no longer present.

Continue Refer to «Information»(ref-440281-S30978755332011121400000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Faulty signal. Intermittent fault

Ignition off. The control module has registered a fault in the heated oxygen sensor (HO2S). Try a new heated oxygen sensor (HO2S) according to «Heated oxygen sensors (HO2S), replacing»(ref-440280-S17464517122011121400000) .

Continue Refer to «Information»(ref-440281-S03736844152011121400000)

In case of this defect, troubleshooting is not followed by verification.

The information can be displayed again or the fault-tracing for this fault can be interrupted.

See Faulty signal. Permanent fault

Check heated oxygen sensor (HO2S) connector for contact resistance and oxidation according to Contact resistance and oxidation and loose connections according to Loose connections (terminals)

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
To access/replace the heated oxygen sensor (HO2S), see «Heated oxygen sensors (HO2S), replacing»(ref-440280-S17464517122011121400000) .
For information about signals: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Information»(ref-440281-S30200333082011121400000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal missing. Intermittent fault

Ignition off
Check heated oxygen sensor (HO2S) connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-461653-S26956869552012040200000) .
Reinstall components, reconnect connectors etc.
Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if the diagnosis is underway. Other information To access/replace the heated oxygen sensor (HO2S), see «Heated oxygen sensors (HO2S), replacing»(ref-440280-S17464517122011121400000) . For information about signals: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Is FAULT NOT REGISTERED displayed?

YES OKAY: Troubleshooting has been completed.
NO Refer to «Checking wiring and components»(ref-440281-S31544818762011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S05743408252011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal missing. Permanent fault

Check signal cable between heated oxygen sensor (HO2S)) #2 and control module #A36 (#A36) for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
To access/replace the heated oxygen sensor (HO2S), see «Heated oxygen sensors (HO2S), replacing»(ref-440280-S17464517122011121400000) .
For information about signals: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Information»(ref-440281-S15162840182011121400000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal too high. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S29985987172011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too high. Permanent fault

Check signal cable between heated oxygen sensor (HO2S) #2 and control module #A36 (#A36) for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults .

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
To access/replace the heated oxygen sensor (HO2S), see «Heated oxygen sensors (HO2S), replacing»(ref-440280-S17464517122011121400000) .
For information about signals: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Information»(ref-440281-S00334225882011121400000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal too low. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect connectors, reinstall components.
Start the engine and let it idle. Read off the rear heated oxygen sensor (HO2S) signal diagnostic trouble code (DTC) status. The text NOT READY is displayed if diagnosis is underway.

Is FAULT NOT REGISTERED displayed?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S29391808272011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal too low. Permanent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reconnect connectors, reinstall components etc.
Ignition on
Activate the relevant injector. A "click" should be heard when the injector is activated.

Is the injector working?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S42572625602011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reconnect connectors, reinstall components etc.
Ignition on
Activate the relevant injector. A "click" should be heard when the injector is activated.

Is the injector working?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S34163767442011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reconnect connectors, reinstall components etc.
Ignition on
Activate the relevant injector. A "click" should be heard when the injector is activated.

Is the injector working?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S05302399842011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal missing

See Signal too high

See Signal too low

See Signal missing

See Signal too high

See Signal too low

See Signal missing

See Signal too high

See Signal too low

See Signal missing

See Signal too high

See Signal too low

See Signal missing

See Signal too high

See Signal too low

Start the engine. Read off the fault status of the camshaft position (CMP) sensor. "DIAGNOSIS COMPLETE" must be displayed when the camshaft position (CMP) sensor has been tested. If the fault status is "NO FAULT FOUND" when the diagnostic is complete there is an intermittent fault.

Continue Refer to «Checking components and connectors»(ref-440281-S06119929532011121400000)

Checking components and connectors

Check the camshaft position (CMP) sensor and control module connectors. Check for contact resistance and oxidation.

Check that the camshaft position (CMP) sensor is correctly installed and that neither the sensor or the housing is damaged. Damage may affect the position of the sensor in relation to the camshaft rotor.

Try a new camshaft position (CMP) sensor if no fault is found during the above fault-tracing.

Remedy as necessary.

Other information

To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000)
For the location of components on 5 cylinder engines, see «Location of components»(ref-461673-S37190921092012040200000)
For the location of components on 6 cylinder turbocharged engines: For 6 cylinder turbocharged engines -2001, see «Location of components»(ref-440286-S18591874812011121400000) For 6 cylinder turbocharged engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder turbocharged engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
For information about signals on 5 cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000)
For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .
See «Contents»(ref-440209-S18666729612011121400000) .

Scheme 145

Continue Refer to «Verification»(ref-440281-S29584023022011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Start the engine. Read off the fault status of the camshaft position (CMP) sensor. When the camshaft position (CMP) sensor is tested, diagnostic ready should be displayed.

Does the status display fault found?

YES Refer to «Information»(ref-440281-S10765774532011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Start the engine. Read off the camshaft position (CMP) sensor fault status. "DIAGNOSIS COMPLETE" must be displayed when the camshaft position (CMP) sensor has been tested. If the fault status is "NO FAULT FOUND" when the diagnostic is complete there is an intermittent fault.

Continue Refer to «Checking components and connectors»(ref-440281-S10224296262011121400000)

Check the camshaft position (CMP) sensor and control module connectors. Check for contact resistance and oxidation.

Remedy as necessary.

Try a new camshaft position (CMP) sensor if no fault is found during the above fault-tracing.

Other information

To connect the breakout box and access the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000)
For the location of components on 5 cylinder engines, see «Location of components»(ref-461673-S37190921092012040200000)
For the location of components on 6 cylinder normally aspirated engines: For 6 cylinder naturally aspirated engines -2001, see «Location of components»(ref-440286-S07141424702011121400000) For 6 cylinder naturally aspirated engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder naturally aspirated engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
For the location of components on 6 cylinder turbocharged engines: For 6 cylinder turbocharged engines -2001, see «Location of components»(ref-440286-S18591874812011121400000) For 6 cylinder turbocharged engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder turbocharged engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
For information about signals on 5 cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000)
For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .
See «Contents»(ref-440209-S18666729612011121400000) .

Scheme 146

Continue Refer to «Verification»(ref-440281-S23301032112011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Start the engine. Read off the fault status of the camshaft position (CMP) sensor. When the camshaft position (CMP) sensor is tested, diagnostic ready should be displayed.

Does the status display fault found?

YES Refer to «Information»(ref-440281-S41698154652011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Start the engine. Read off the fault status of the camshaft position (CMP) sensor. "DIAGNOSIS COMPLETE" must be displayed when the camshaft position (CMP) sensor has been tested. If the fault status is "NO FAULT FOUND" when the diagnostic is complete there is an intermittent fault.

Continue Refer to «Checking connectors and wiring»(ref-440281-S09986786762011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Start the engine. Read off the fault status of the camshaft position (CMP) sensor. When the camshaft position (CMP) sensor is tested, diagnostic ready should be displayed.

Does the status display fault found?

YES Refer to «Information»(ref-440281-S16516705852011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check signal cable between control module #A47 (#A47) and camshaft position (CMP) sensor connector #2 for an intermittent open-circuit according to Open-circuit, intermittent faults and an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults . Check the ground lead between control module #A65 (#A65) and camshaft position (CMP) sensor connector #3 for an intermittent open-circuit according to Open-circuit, intermittent faults

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
For component location on the B52X4 T see «Location of components»(ref-461673-S37190921092012040200000) .
For component location on the B6304 S: For 6 cylinder naturally aspirated engines -2001, see «Location of components»(ref-440286-S07141424702011121400000) For 6 cylinder naturally aspirated engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder naturally aspirated engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
For the location of components on the B6284 T: For 6 cylinder turbocharged engines -2001, see «Location of components»(ref-440286-S18591874812011121400000) For 6 cylinder turbocharged engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder turbocharged engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
For information about signals on 5-cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000) .
For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Information»(ref-440281-S06553231832011121400000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Ignition off
Check camshaft position (CMP) sensor connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-461653-S26956869552012040200000) and loose connections according to «Loose connections (terminals)»(ref-461653-S11251226332012040200000) . Check particularly for any damage.
Assemble connector
Start engine Read off the camshaft position (CMP) sensor fault status When the camshaft position (CMP) sensor is tested diagnostic ready should be displayed. If the fault status displays that the fault is not found, it means that the fault was caused by loose connections.

Does the status display fault found?

YES Refer to «Checking cables»(ref-440281-S36170593232011121400000)
NO OKAY: Troubleshooting has been completed.

Check signal cable between control module #A47 (#A47) and camshaft position (CMP) sensor connector #2 for an open-circuit according to Open-circuit, permanent faults and a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .

HINT: Use a test screwdriver with at least a 3 W bulb to determine if the cable is short-circuited to supply voltage. Check the ground lead between control module #A65 (#A65) and camshaft position (CMP) sensor connector #3 for an open-circuit according to Open-circuit, permanent faults .

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
For component location on the B52X4 T see «Location of components»(ref-461673-S37190921092012040200000) .
For component location on the B6304 S: For 6 cylinder naturally aspirated engines -2001, see «Location of components»(ref-440286-S07141424702011121400000) For 6 cylinder naturally aspirated engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder naturally aspirated engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
For the location of components on the B6284 T: For 6 cylinder turbocharged engines -2001, see «Location of components»(ref-440286-S18591874812011121400000) For 6 cylinder turbocharged engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder turbocharged engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
For information about signals on 5-cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000) .
For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Verification»(ref-440281-S41592416112011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Start the engine. Read off the fault status of the camshaft position (CMP) sensor. When the camshaft position (CMP) sensor is tested, diagnostic ready should be displayed.

Does the status display fault found?

YES Refer to «Information»(ref-440281-S14514458332011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

start the engine. Read off the fault status of the camshaft position (CMP) sensor. "DIAGNOSIS COMPLETE" must be displayed when the camshaft position (CMP) sensor has been tested. If the fault status is "NO FAULT FOUND" when the diagnostic is complete there is an intermittent fault.

Continue Refer to «Checking the wiring»(ref-440281-S23859417602011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Start the engine. Read off the fault status of the camshaft position (CMP) sensor. When the camshaft position (CMP) sensor is tested, diagnostic ready should be displayed.

Does the status display fault found?

YES Refer to «Information»(ref-440281-S32601083562011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check signal cable between control module #A47 (#A47) and camshaft position (CMP) sensor connector #2 for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults . Check power cable between control module #A29 (#A29) and camshaft position (CMP) sensor connector #1 for an intermittent open-circuit according to Open-circuit, intermittent faults

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
For component location on the B52X4 T see «Location of components»(ref-461673-S37190921092012040200000) .
For component location on the B6304 S: For 6 cylinder naturally aspirated engines -2001, see «Location of components»(ref-440286-S07141424702011121400000) For 6 cylinder naturally aspirated engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder naturally aspirated engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
For the location of components on the B6284 T: For 6 cylinder turbocharged engines -2001, see «Location of components»(ref-440286-S18591874812011121400000) For 6 cylinder turbocharged engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder turbocharged engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
For information about signals on 5-cyl engines, see «Signal specification»(ref-440214-S33124753252011121400000) .
For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Information»(ref-440281-S07526453022011121400000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Ignition off
Check camshaft position (CMP) sensor connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-461653-S26956869552012040200000) and loose connections according to «Loose connections (terminals)»(ref-461653-S11251226332012040200000) . Check particularly for any damage
Assemble connector
Start engine Read off the camshaft position (CMP) sensor fault status When the camshaft position (CMP) sensor is tested diagnostic ready should be displayed. If the fault status displays that the fault is not found, it means that the fault was caused by loose connections.

Does the status display fault found?

YES Refer to «Checking cables»(ref-440281-S22811240212011121400000)
NO OKAY: Troubleshooting has been completed.

Check the signal cable between control module #A47 (#A47) and camshaft position (CMP) sensor connector #2 for a short-circuit to ground according to Short-circuit to ground, permanent faults . Check power cable between control module #A29 (#A29) and camshaft position (CMP) sensor connector #1 for an open-circuit according to Open-circuit, permanent faults .

HINT: With the ignition on and camshaft position (CMP) sensor connector disconnected the voltage between terminal #1 and ground terminal should be approximately 5 V.

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
For component location on the B52X4 T see «Location of components»(ref-461673-S37190921092012040200000) .
For component location on the B6304 S: For 6 cylinder naturally aspirated engines -2001, see «Location of components»(ref-440286-S07141424702011121400000) For 6 cylinder naturally aspirated engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder naturally aspirated engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
For the location of components on the B6284 T: For 6 cylinder turbocharged engines -2001, see «Location of components»(ref-440286-S18591874812011121400000) For 6 cylinder turbocharged engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder turbocharged engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
For information about signals on 5-cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000) .
For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Verification»(ref-440281-S19997506532011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Start the engine. Read off the fault status of the camshaft position (CMP) sensor. When the camshaft position (CMP) sensor is tested, diagnostic ready should be displayed.

Does the status display fault found?

YES Refer to «Information»(ref-440281-S30757664572011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Check signal cable between control module #A47 (#A47) and camshaft position (CMP) sensor connector #2 for an intermittent open-circuit according to Open-circuit, intermittent faults and an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults . Check power cable between control module #A29 (#A29) and camshaft position (CMP) sensor connector #1 for an intermittent open-circuit according to Open-circuit, intermittent faults . Check ground lead between control module #A65 (#A65) and camshaft position (CMP) sensor connector #3 for an intermittent open-circuit according to Open-circuit, intermittent faults

Remedy as necessary.

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
For component location on the B52X4 T see «Location of components»(ref-461673-S37190921092012040200000) .
For component location on the B6304 S: For 6 cylinder naturally aspirated engines -2001, see «Location of components»(ref-440286-S07141424702011121400000) For 6 cylinder naturally aspirated engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder naturally aspirated engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
For the location of components on the B6284 T: For 6 cylinder turbocharged engines -2001, see «Location of components»(ref-440286-S18591874812011121400000) For 6 cylinder turbocharged engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder turbocharged engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
For information about signals on 5-cyl engines, see «Signal specification»(ref-440214-S33124753252011121400000) .
For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Information»(ref-440281-S32149076362011121400000)

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Faulty signal. Intermittent fault

Ignition off
Check camshaft position (CMP) sensor connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-461653-S26956869552012040200000) and loose connections according to «Loose connections (terminals)»(ref-461653-S11251226332012040200000) . Check particularly for any damage
Assemble connector
Start engine Read off the camshaft position (CMP) sensor fault status When the camshaft position (CMP) sensor is tested diagnostic ready should be displayed. If the fault status displays that the fault is not found, it means that the fault was caused by loose connections.

Does the status display fault found?

YES Refer to «Checking cables»(ref-440281-S05065264012011121400000)
NO OKAY: Troubleshooting has been completed.

Check signal cable between control module #A47 (#A47) and camshaft position (CMP) sensor connector #2 for an open-circuit according to Open-circuit, permanent faults and for a short-circuit to ground according to Short-circuit to ground, permanent faults . Check power cable between control module #A29 (#A29) and camshaft position (CMP) sensor connector #1 for an open-circuit according to Open-circuit, permanent faults . Check the ground lead between control module #A65 (#A65) and camshaft position (CMP) sensor connector #3 for an open-circuit according to Open-circuit, permanent faults .

Remedy as necessary.

Other information

Connecting the breakout box/accessing the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000) .
For component location on the B52X4 T see «Location of components»(ref-461673-S37190921092012040200000) .
For component location on the B6304 S: For 6 cylinder naturally aspirated engines -2001, see «Location of components»(ref-440286-S07141424702011121400000) For 6 cylinder naturally aspirated engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder naturally aspirated engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
For the location of components on the B6284 T: For 6 cylinder turbocharged engines -2001, see «Location of components»(ref-440286-S18591874812011121400000) For 6 cylinder turbocharged engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder turbocharged engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
For information about signals on 5-cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000) .
For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Continue Refer to «Verification»(ref-440281-S35224247752011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Start the engine. Read off the fault status of the camshaft position (CMP) sensor. When the camshaft position (CMP) sensor is tested, diagnostic ready should be displayed.

Does the status display fault found?

YES Refer to «Information»(ref-440281-S31898197112011121400000)
NO VERIFIED: Troubleshooting has been completed.

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Faulty signal. Permanent fault

See Signal too high. Intermittent fault

See Signal too high. Permanent fault

See Signal too low. Intermittent fault

See Signal too low. Permanent fault

Internal fault

See Internal fault

Start the engine. Read off the fault status of the camshaft position (CMP) sensor. Check the status of the fault when the diagnostic status is COMPLETED. If the fault status is "NO FAULT FOUND" when the diagnostic status is COMPLETE there is an intermittent fault.

Continue Refer to «Checking components and connectors»(ref-440281-S39105436492011121400000)

Check the camshaft position (CMP) sensor and control module connectors. Check for contact resistance and oxidation.

Remedy as necessary.

Try a new camshaft position (CMP) sensor if no fault is found during the above fault-tracing.

Other information

To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000)
For the location of components on 5 cylinder engines, see «Location of components»(ref-461673-S37190921092012040200000)
For the location of components on 6 cylinder turbocharged engines: For 6 cylinder turbocharged engines -2001, see «Location of components»(ref-440286-S18591874812011121400000) For 6 cylinder turbocharged engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder turbocharged engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
For information about signals on 5 cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000)
For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .
See «Contents»(ref-440209-S18666729612011121400000) .

Continue Refer to «Verification»(ref-440281-S16514941422011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Reinstall the connectors, components etc.
Start the engine. Rev the engine to approximately 4000 RPM a few times
Read off the diagnostic status and the fault status for diagnostic trouble code (DTC) ECM-3010. Check that the fault status is "NO FAULT FOUND" when the diagnostic status is COMPLETED. If the fault status is "FAULT FOUND" when the diagnostic status is COMPLETED there is a fault.

Is the fault status "NO FAULT FOUND"?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S30485894832011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Start the engine. Read off the camshaft position (CMP) sensor fault status. Check the status of the fault when the diagnostic status is COMPLETED. If the fault status is "NO FAULT FOUND" when the diagnostic status is COMPLETE there is an intermittent fault.

Continue Refer to «Checking components and connectors»(ref-440281-S30087294262011121400000)

Check the camshaft position (CMP) sensor and control module connectors. Check for contact resistance and oxidation.

Remedy as necessary.

Try a new camshaft position (CMP) sensor if no fault is found during the above fault-tracing.

Other information

To connect the breakout box / access the control module, see «Connecting the breakout box»(ref-440211-S03702023042011121400000)
For the location of components on 5 cylinder engines, see «Location of components»(ref-461673-S37190921092012040200000)
For the location of components on 6 cylinder normally aspirated engines: For 6 cylinder naturally aspirated engines -2001, see «Location of components»(ref-440286-S07141424702011121400000) For 6 cylinder naturally aspirated engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder naturally aspirated engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
For the location of components on 6 cylinder turbocharged engines: For 6 cylinder turbocharged engines -2001, see «Location of components»(ref-440286-S18591874812011121400000) For 6 cylinder turbocharged engines 2002, see «Location of components, engine compartment»(ref-440286-S07948714472011121400000) For 6 cylinder turbocharged engines 2003-, see «Location of components, engine compartment»(ref-440286-S42548706262011121400000) .
For information about signals on 5 cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000)
For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .
See «Contents»(ref-440209-S18666729612011121400000) .

Continue Refer to «Verification»(ref-440281-S09610211912011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Reinstall the connectors, components etc.
Start the engine. Rev the engine to approximately 4000 RPM a few times
Read off the diagnostic status and the fault status for diagnostic trouble code (DTC) ECM-3010. Check that the fault status is "NO FAULT FOUND" when the diagnostic status is COMPLETED. If the fault status is "FAULT FOUND" when the diagnostic status is COMPLETED there is a fault.

Is the fault status "NO FAULT FOUND"?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S15006863482011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Start the engine. Read off the fault status of the camshaft position (CMP) sensor. Check the status of the fault when the diagnostic status is COMPLETED. If the fault status is "NO FAULT FOUND" when the diagnostic status is COMPLETE there is an intermittent fault.

Continue Refer to «Checking the wiring»(ref-440281-S33278305302011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Reinstall the connectors, components etc.
Start the engine. Rev the engine to approximately 4000 RPM a few times
Read off the diagnostic status and the fault status for diagnostic trouble code (DTC) ECM-3010. Check that the fault status is "NO FAULT FOUND" when the diagnostic status is COMPLETED. If the fault status is "FAULT FOUND" when the diagnostic status is COMPLETED there is a fault.

Is the fault status "NO FAULT FOUND"?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S09793554402011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Start the engine. Read off the camshaft position (CMP) sensor fault status. Check the status of the fault when the diagnostic status is COMPLETED. If the fault status is "NO FAULT FOUND" when the diagnostic status is COMPLETE there is an intermittent fault.

Continue Refer to «Checking the wiring»(ref-440281-S38569433882011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Reinstall the connectors, components etc.
Start the engine. Rev the engine to approximately 4000 RPM a few times
Read off the diagnostic status and the fault status for diagnostic trouble code (DTC) ECM-3010. Check that the fault status is "NO FAULT FOUND" when the diagnostic status is COMPLETED. If the fault status is "FAULT FOUND" when the diagnostic status is COMPLETED there is a fault.

Is the fault status "NO FAULT FOUND"?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S36538486802011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Start the engine. Read off the fault status of the camshaft position (CMP) sensor. Check the status of the fault when the diagnostic status is COMPLETED. If the fault status is "NO FAULT FOUND" when the diagnostic status is COMPLETE there is an intermittent fault.

Continue Refer to «Checking connectors and wiring»(ref-440281-S03838049292011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Reinstall the connectors, components etc.
Start the engine. Rev the engine to approximately 4000 RPM a few times
Read off the diagnostic status and the fault status for diagnostic trouble code (DTC) ECM-3010. Check that the fault status is "NO FAULT FOUND" when the diagnostic status is COMPLETED. If the fault status is "FAULT FOUND" when the diagnostic status is COMPLETED there is a fault.

Is the fault status "NO FAULT FOUND"?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S30235909792011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Start the engine. Read off the camshaft position (CMP) sensor fault status. Check the status of the fault when the diagnostic status is COMPLETED. If the fault status is "NO FAULT FOUND" when the diagnostic status is COMPLETE there is an intermittent fault.

Continue Refer to «Checking connectors and wiring»(ref-440281-S07218829992011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Reinstall the connectors, components etc.
Start the engine. Rev the engine to approximately 4000 RPM a few times
Read off the diagnostic status and the fault status for diagnostic trouble code (DTC) ECM-3010. Check that the fault status is "NO FAULT FOUND" when the diagnostic status is COMPLETED. If the fault status is "FAULT FOUND" when the diagnostic status is COMPLETED there is a fault.

Is the fault status "NO FAULT FOUND"?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S08712252152011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Internal fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect the connectors, reinstall components etc.
Start engine and run to normal operating temperature.
Rev the engine to 3500 RPM and read off the value of the knock sensor (KS) signal. The value must be 2-6.

Is the value between 2-6?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S22854660922011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Checking the knock sensor (KS) signal

Ignition off
Reinstall the components, reconnect the connectors etc.
Start the engine and run it to normal operating temperature
Rev the engine to 3500 RPM. Read off the value of the knock sensor (KS) signal. The value must be between 2 and 6. If the value is now OK it means that the cause of the fault was loose connections in connector. Other information To access or replace the knock sensor (KS): For B5xx4T, see «Replacing knock sensors (KS)»(ref-440263-S42492395642011121400000) For B6xx4x, see «Knock sensor (KS), replacing»(ref-440263-S33902147922011121400000) . For information about signals on 5 cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000) For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

Is the value between 2 and 6?

OK OKAY: Troubleshooting has been completed.
NOT OK Refer to «Replacing the component»(ref-440281-S12282305332011121400000)

Replace the knock sensor (KS)

For B5xx4T, see «Replacing knock sensors (KS)»(ref-440263-S42492395642011121400000)
For B6xx4x, see «Knock sensor (KS), replacing»(ref-440263-S33902147922011121400000) .

Continue Refer to «Verification»(ref-440281-S07258649912011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect the connectors, reinstall components etc.
Start engine and run to normal operating temperature.
Rev the engine to 3500 RPM and read off the value of the knock sensor (KS) signal. The value must be 2-6.

Is the value between 2-6?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S02863878982011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect the connectors, reinstall components etc.
Start engine and run to normal operating temperature.
Rev the engine to 3500 RPM and read off the value of the knock sensor (KS) signal. The value must be 2-6.

Is the value between 2-6?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S06176898242011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Ignition off
Reinstall the components, reconnect the connectors etc.
Start the engine and run it to normal operating temperature
Rev the engine to 3500 RPM. Read off the value of the knock sensor (KS) signal. The value must be 2-6. If the value is now OK it means that the cause of the fault was loose connections in connector. Other information To access or replace the knock sensor (KS): For B5xx4T, see «Replacing knock sensors (KS)»(ref-440263-S42492395642011121400000) For B6xx4x, see «Knock sensor (KS), replacing»(ref-440263-S33902147922011121400000) . For information about signals on 5 cylinder engines, see «Signal specification»(ref-440214-S33124753252011121400000) For information about signals on 6 cylinder engines: For 6 cylinder engines -2001, see «Signal specification»(ref-440279-S16581672222011121400000) For 6 cylinder engines 2002-, see «Signal specification»(ref-440279-S30114162992011121400000) For 6 cylinder engines -2004, see «Signal specification»(ref-440279-S11542834502011121400000) For 6 cylinder engines 2005-, see «Signal specification»(ref-440279-S13492600202011121400000) .

OK OKAY: Troubleshooting has been completed.
NOT OK Refer to «Replacing the component»(ref-440281-S00573178842011121400000)

Replace the knock sensor (KS)

For B5xx4T, see «Replacing knock sensors (KS)»(ref-440263-S42492395642011121400000)
For B6xx4x, see «Knock sensor (KS), replacing»(ref-440263-S33902147922011121400000) .

Continue Refer to «Verification»(ref-440281-S17151486262011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off.
Reconnect the connectors, reinstall components etc.
Start engine and run to normal operating temperature.
Rev the engine to 3500 RPM and read off the value of the knock sensor (KS) signal. The value must be 2-6.

Is the value between 2-6?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S21770130372011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reinstall the connectors, components etc.
Start the engine. The car will not start if there is a fault in the engine speed (RPM) sensor signal.

Does the car start?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S03814325622011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

If the fault is intermittent, do not verify fault-tracing if the fault does not recur.

It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

See Signal missing. Intermittent fault

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reinstall the connectors, components etc.
Start the engine. The car will not start if there is a fault in the engine speed (RPM) sensor signal.

Does the car start?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S13506249982011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

See Signal missing. Permanent fault

Checking the fuel injection system, ignition system and components

Note. In the event of diagnostic trouble codes (DTCs), that affect camshaft control or camshaft reset valve, these must be fault-traced first.

HINT: In certain cases, the engine control module (ECM) can determine which cylinder has misfired.

Check the fuel level in the fuel tank.

Check that the engine oil level is correct.

Look for moisture in the electrical terminals for the ignition coils and in the spark plug wells.

Check the spark plugs. Check for damage in the insulation and for any other damage.

Check the engine intake system for leakage.

Check the crankcase ventilation. Check for blockage.

Check the fuel pressure and residual pressure.

Check the compression of the engine.

Remedy as necessary.

Other information

For information about the misfire diagnostic, see "Design and Function, Diagnostic function".
See «Air leaks in the intake system, checking»(ref-440281-S06964904502011121400000)
See «Cylinder leakage test»(ref-440282-S09088609642011121400000)

Continue Refer to «Verification»(ref-440281-S07145279882011121400000)

HINT: After carrying out the repair, check that the fault has been remedied.

Ignition off
Reinstall the connectors, components etc.
Start the engine. Check that the misfire counter is not counting upwards. Check that the engine is firing on all cylinders. NOTE: Misfire can occur at different engine speeds and loads.

Is the function OK?

YES VERIFIED: Troubleshooting has been completed.
NO Refer to «Information»(ref-440281-S23623044182011121400000)

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Air-leaks: in the intake system, checking

Special tools

9995545

9995544

Note. The illustrations in this service information are used for different model years and/or models. Some variation may occur. However, the essential information in the illustrations is always correct.

Emissions impact / Catalytic converter damage / Start up

See Emissions impact / Catalytic converter damage / Start up

Engine Control Module (ECM) Diagnostic Trouble Codes - 5 of 11: Other Volvo S80 I

Signal too high/signal too low/signal missing

Faulty signal. Intermittent fault

Verification

Scheme 140

Scheme 141

Fault-tracing information

Faulty signal. Permanent fault

Checking the connector

Signal missing. Intermittent fault

Signal missing. Permanent fault

Signal too high. Intermittent fault

Signal too high. Permanent fault

Fault-tracing

Checking the status

Scheme 142

Scheme 143

Checking for air leakage in the exhaust system

Scheme 144

Replacing the component

Permanent fault

Replacing component

Signal missing

Signal too high

Signal too low

Checking cables and connectors

Checking connector

Checking cables

Signal too low. Intermittent fault

Signal too low. Permanent fault

Faulty signal

Checking components and connectors

Scheme 145

Scheme 146

Internal fault

Checking the knock sensor (KS) signal

Checking the fuel injection system, ignition system and components

Air-leaks: in the intake system, checking

Emissions impact / Catalytic converter damage / Start up

More articles — Engine Control Module (ECM) Diagnostic Trouble Codes - 5 of 11

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