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Engine Control Module (ECM) Diagnostic Trouble Codes - 8 of 11: Other Volvo S80 I

Testing & Diagnostics 11 illustrations ~18358 words

Checking components

Check that the engine speed (RPM) sensor is correctly installed.

Check the engine speed (RPM) sensor connector. Check for intermittent contact resistance and oxidation.

The engine speed (RPM) sensor is sensitive to interference from surrounding power cables, the starter motor cable for example, or similar high amperage cables. This occurs when starting the engine for example.

Interference can cause difficulty in starting the engine, the engine does not start at all, the tachometer flickers at start attempts etc.

Causes of interference can be

  1. surrounding power cables, for example an incorrectly routed starter motor cable
  2. incorrectly routed transmission bolted joints for the engine.

Checking the power cable

Check for incorrectly routed power cables (routed too close to the engine speed (RPM) sensor).

Checking the bolted joints

When removing and installing the transmission it is important that all the bolts for the engine are correctly tightened. Incorrectly tightened bolts can cause poor ground connection and interfere with the engine speed (RPM) sensor. Check that all the bolts from the transmission to the engine are correctly tightened.

Checking the wiring

Check the signal cable between the engine speed (RPM) sensor terminal #1 and engine control module (ECM) terminal #A48 (#A48) and between the engine speed (RPM) sensor terminal #2 and engine control module (ECM) terminal #A66 (#B6). Check for an intermittent short-circuit to supply voltage. Check for an intermittent short-circuit to ground. Check for an intermittent open-circuit.

Other information

  1. See «Checking wiring and terminals»(ref-440209-S18666729612011121400000)
  2. To access or replace the engine speed (RPM) sensor: For B5xx4T -2001, see «Replacing the engine speed (RPM) sensor»(ref-461749-S36199811742012040200000) For B5xx4T 2002-, see «Replacing the engine speed (RPM) sensor»(ref-440263-S03460259482011121400000) For B6xx4x -2001, see «Replacing the engine speed (RPM) sensor»(ref-440263-S12980455952011121400000) For B6xx4x 2002-, see «Replacing the engine speed (RPM) sensor»(ref-440263-S05291773442011121400000) .

Remedy as necessary

Scheme 258

Scheme 258
Scheme 258

Scheme 259

Scheme 259
Scheme 259

Scheme 260

Scheme 260
Scheme 260
  1. Continue Refer to «Verification»(ref-440289-S33483589752011121400000)

Verification

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

Scheme 261

Scheme 261: Verification
Scheme 261: Verification

Scheme 262

Scheme 262
Scheme 262
  1. Start the engine. Allow the engine to idle. There is a fault if the engine does not start
  2. Read off the diagnostic status and the fault status for diagnostic trouble code (DTC) ECM-5200. 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.

Does the engine start and is the fault status "NO FAULT FOUND"?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S04189846262011121400000)

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.

Faulty signal

See Faulty signal

Checking interference to the engine speed (RPM) sensor

Check the engine speed (RPM) sensor connector. Check for contact resistance and oxidation.

The engine speed (RPM) sensor is sensitive to interference from surrounding power cables, the starter motor cable for example, or similar high amperage cables. This occurs when starting the engine for example.

Interference can cause difficulty in starting the engine, the engine does not start at all, the tachometer flickers at start attempts etc.

Causes of interference can be

  1. surrounding power cables, for example an incorrectly routed starter motor cable
  2. incorrectly routed transmission bolted joints for the engine.

Checking the power cable

Check for incorrectly routed power cables (routed too close to the engine speed (RPM) sensor).

Checking the bolted joints

When removing and installing the transmission it is important that all the bolts for the engine are correctly tightened. Incorrectly tightened bolts can cause poor ground connection and interfere with the engine speed (RPM) sensor. Check that all the bolts from the transmission to the engine are correctly tightened.

Other information

  1. See «Checking wiring and terminals»(ref-440209-S18666729612011121400000)
  2. To access or replace the engine speed (RPM) sensor: For B5xx4T -2001, see «Replacing the engine speed (RPM) sensor»(ref-461749-S36199811742012040200000) For B5xx4T 2002-, see «Replacing the engine speed (RPM) sensor»(ref-440263-S03460259482011121400000) For B6xx4x -2001, see «Replacing the engine speed (RPM) sensor»(ref-440263-S12980455952011121400000) For B6xx4x 2002-, see «Replacing the engine speed (RPM) sensor»(ref-440263-S05291773442011121400000) .

Remedy as necessary

  1. Continue Refer to «Verification»(ref-440289-S36774181402011121400000)

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

  1. Start the engine. Allow the engine to idle. There is a fault if the engine does not start
  2. Read off the diagnostic status and the fault status for diagnostic trouble code (DTC) ECM-5200. 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.

Does the engine start and is the fault status "NO FAULT FOUND"?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S20406155572011121400000)

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

Checking interference

The engine speed (RPM) sensor is sensitive to interference from surrounding power cables, the starter motor cable for example, or similar high amperage cables. This occurs when starting the engine for example.

Interference can cause difficulty in starting the engine, the engine does not start at all, the tachometer flickers at start attempts etc.

Causes of interference can be

  1. surrounding power cables, for example an incorrectly routed starter motor cable
  2. incorrectly routed transmission bolted joints for the engine.

Checking the power cable

Check for incorrectly routed power cables (routed too close to the engine speed (RPM) sensor).

Checking the bolted joints

When removing and installing the transmission it is important that all the bolts for the engine are correctly tightened. Incorrectly tightened bolts can cause poor ground connection and interfere with the engine speed (RPM) sensor. Check that all the bolts from the transmission to the engine are correctly tightened.

Remedy as necessary

Check the engine speed (RPM) sensor connector. Check for intermittent contact resistance and oxidation.

Other information

  1. To access or replace the engine speed (RPM) sensor: For B5xx4T -2001, see «Replacing the engine speed (RPM) sensor»(ref-461749-S36199811742012040200000) For B5xx4T 2002-, see «Replacing the engine speed (RPM) sensor»(ref-440263-S03460259482011121400000) For B6xx4x -2001, see «Replacing the engine speed (RPM) sensor»(ref-440263-S12980455952011121400000) For B6xx4x 2002-, see «Replacing the engine speed (RPM) sensor»(ref-440263-S05291773442011121400000) .
  1. Continue Refer to «Verification»(ref-440289-S00901083322011121400000)

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

  1. Start the engine. Allow the engine to idle. There is a fault if the engine does not start
  2. Read off the diagnostic status and the fault status for diagnostic trouble code (DTC) ECM-5200. 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.

Does the engine start and is the fault status "NO FAULT FOUND"?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S14709239952011121400000)

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

Check that the engine speed (RPM) sensor is correctly installed.

Check the engine speed (RPM) sensor. Check that it is not damaged or dirty.

Check the flywheel for damage.

Other information

  1. To access or replace the engine speed (RPM) sensor: For B5xx4T -2001, see «Replacing the engine speed (RPM) sensor»(ref-461749-S36199811742012040200000) For B5xx4T 2002-, see «Replacing the engine speed (RPM) sensor»(ref-440263-S03460259482011121400000) For B6xx4x -2001, see «Replacing the engine speed (RPM) sensor»(ref-440263-S12980455952011121400000) For B6xx4x 2002-, see «Replacing the engine speed (RPM) sensor»(ref-440263-S05291773442011121400000) .
  1. Continue Refer to «Verification»(ref-440289-S03384007872011121400000)

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

  1. Start the engine. Allow the engine to idle. There is a fault if the engine does not start
  2. Read off the diagnostic status and the fault status for diagnostic trouble code (DTC) ECM-5200. 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.

Does the engine start and is the fault status "NO FAULT FOUND"?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S24545940882011121400000)

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

See Fault-tracing information

Signal missing. Permanent fault

See Signal missing. Permanent fault

Signal too high. Permanent fault

See Signal too high. Permanent fault

Signal too low. Permanent fault

See Signal too low. Permanent fault

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 Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

See Fault-tracing information

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

Scheme 263

Scheme 263
Scheme 263
  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Ignition on
  4. Read off the oil level sensor signal. Check that all three values for oil level, oil temperature and oil grade are between 17-83%. The fault has been remedied if all the values are OK.

Are these values OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S40382284142011121400000)

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 status

  1. Ignition on
  2. Read off the oil level sensor signal. Check that all three values for oil level, oil temperature and oil grade are between 17-83%. The fault is intermittent at the moment if all the values are OK.
  1. Continue Refer to «Checking the wiring»(ref-440289-S11851982052011121400000)

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

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Ignition on
  4. Read off the oil level sensor signal. Check that all three values for oil level, oil temperature and oil grade are between 17-83%. The fault has been remedied if all the values are OK.

Are these values OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S12255500462011121400000)

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.

  1. Ignition on
  2. Read off the oil level sensor signal. Check that all three values for oil level, oil temperature and oil grade are between 17-83%. The fault is intermittent at the moment if all the values are OK.
  1. Continue Refer to «Checking the wiring»(ref-440289-S09071379332011121400000)

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

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Ignition on
  4. Read off the oil level sensor signal. Check that all three values for oil level, oil temperature and oil grade are between 17-83%. The fault has been remedied if all the values are OK.

Are these values OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S39156487442011121400000)

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 oil leakage and replacing the component

Note. If diagnostic trouble codes (DTCs) ECM-540X and ECM-550X are stored at the same time, codes ECM-540X must be remedied first.

  1. Checking the engine for oil leakage
  2. Also check the oil level sensor connector. Check for loose connections, contact resistance or oxidation. HINT: This diagnostic trouble code (DTC) may be stored if the engine oil is significantly mixed with fuel or coolant for example. Try a new oil level sensor if no fault is found and the fault is permanent. Remedy as necessary. Other information: To connect the breakout box, 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) . To access or replace the oil level sensor, see «Oil level sensor, replacing»(ref-461672-S34069479642012040200000) See «Checking wiring and terminals»(ref-440209-S18666729612011121400000)
  1. Continue Refer to «Verification»(ref-440289-S32272936482011121400000)

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

  1. Ignition off
  2. Reinstall the connectors, components etc.
  3. Start the engine. Allow the engine to idle for 1 minute. Increase the engine speed (RPM) to approximately 5100 RPM for at least 1 second. The car must then be driven at a speed of more than 50 km/h. NOTE: The above instructions must be followed and carried out in the specified order.
  4. Read off the status of the diagnostic trouble code (DTC). The fault has been remedied if status of the diagnostic trouble code (DTC) is intermittent.

Is the status of the diagnostic trouble code (DTC) intermittent?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S29088819392011121400000)

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 oil level and replacing the component

Note. If diagnostic trouble codes (DTCs) ECM-540X and ECM-550X are stored at the same time, codes ECM-540X must be remedied first.

  1. Check that the oil level in the engine is not too low. Ensure that the level is correct. HINT: This diagnostic trouble code (DTC) may be stored if the engine oil is significantly mixed with fuel or coolant for example. Try a new oil level sensor if no fault is found and the fault is permanent. Remedy as necessary. 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) . See «Oil level sensor, replacing»(ref-461672-S34069479642012040200000) See «Checking wiring and terminals»(ref-440209-S18666729612011121400000) .
  1. Continue Refer to «Verification»(ref-440289-S32188083522011121400000)

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

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Start the engine and allow to idle for approximately 1 minute
  4. Read off the status of the diagnostic trouble code (DTC). The fault has been remedied if status of the diagnostic trouble code (DTC) is intermittent.

Is the status of the diagnostic trouble code (DTC) intermittent?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S21476251812011121400000)

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

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

Checking the connector

  1. Ignition off
  2. Check the air conditioning (A/C) relay connector. Check for contact resistance and oxidation
  3. Reinstall the components, reconnect the connectors etc.
  4. Ignition on
  5. Activate the air conditioning (A/C) relay. A " clicking sound" should be heard when the air conditioning (A/C) relay is activated. If the air conditioning (A/C) relay is now OK, the cause of the fault was loose connections in the connector. 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) . See «Checking wiring and terminals»(ref-440209-S18666729612011121400000) .

Does the air conditioning (A/C) relay function?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «Checking components and wiring»(ref-440289-S38041900182011121400000)

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

  1. Ignition off.
  2. Reconnect connectors, reinstall components
  3. Ignition on.
  4. Activate air conditioning (A/C) relay. An "clicking sound" should be heard from the air conditioning (A/C) relay when it is activated.

Does the air conditioning (A/C) relay function?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S41093677332011121400000)

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

See Signal missing. Permanent fault

See Signal missing. Permanent fault

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).

Signal too high. Intermittent fault

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

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

  1. Ignition off.
  2. Reconnect connectors, reinstall components
  3. Ignition on.
  4. Activate air conditioning (A/C) relay. An "clicking sound" should be heard from the air conditioning (A/C) relay when it is activated.

Does the air conditioning (A/C) relay function?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S27493050542011121400000)

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 Signal too high. Permanent fault

See Signal too high. Permanent fault

See Signal too high. 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).

Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

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

  1. Ignition off.
  2. Reconnect connectors, reinstall components
  3. Ignition on.
  4. Activate air conditioning (A/C) relay. An "clicking sound" should be heard from the air conditioning (A/C) relay when it is activated.

Does the air conditioning (A/C) relay function?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S27070064512011121400000)

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

See Signal too low. Permanent fault

See Signal too low. Permanent fault

See Signal too low. 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).

Checking connector

  1. Ignition off.
  2. Check turbocharger (TC) control valve connector for contact resistance and oxidation according to «Contact resistance and oxidation»(ref-461653-S11919106662012040200000) .
  3. Reinstall components, reconnect connectors etc.
  4. Ignition on.
  5. Activate turbocharger (TC) control valve.
  6. A click should be heard from the turbocharger (TC) control valve. If the function is OK the cause of the fault was loose connections in the connector. Other information To access/replace the turbocharger (TC) control valve, see «Replacing the turbocharger (TC) control valve»(ref-440280-S37124804542011121400000)

Is the function OK?

  1. YES OKAY: Troubleshooting has been completed.
  2. NO Refer to «Checking component and wiring»(ref-440289-S22261243512011121400000)

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

  1. Ignition off.
  2. Reinstall connectors, components etc.
  3. Ignition on.
  4. Activate turbocharger (TC) control valve
  5. A click should be heard from the turbocharger (TC) control valve.
  6. Check that the function is OK.

Is function OK ?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S25677578072011121400000)

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).

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

  1. Ignition off.
  2. Reinstall connectors, components etc.
  3. Ignition on.
  4. Activate turbocharger (TC) control valve
  5. A click should be heard from the turbocharger (TC) control valve.
  6. Check that the function is OK.

Is function OK ?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S34537560142011121400000)

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).

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

  1. Ignition off.
  2. Reinstall connectors, components etc.
  3. Ignition on.
  4. Activate turbocharger (TC) control valve
  5. A click should be heard from the turbocharger (TC) control valve.
  6. Check that the function is OK.

Is function OK ?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S08585236922011121400000)

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 hoses and the turbocharger (TC) control valve

Check the hoses between the pressure servo for the boost pressure control (BPC) valve and the turbocharger (TC) control valve. Check that the hoses are not trapped, blocked or damaged.

Check the hoses between the turbocharger (TC) control valve and the charge air pipe (between the turbocharger (TC) and the charge air cooler (CAC)). Check that the hoses are not trapped, blocked or damaged.

Check the turbocharger (TC) control valve by activating it. The turbocharger (TC) control valve must click when it is activated.

5 cylinder engines

Check the setting of the pressure servo for the boost pressure control (BPC) valve. Check the boost pressure control (BPC) valve. Check that the pressure servo and the boost pressure control (BPC) valve are functioning correctly and are not sticking

See Wastegate valve, adjusting

6 cylinder engines

Check the setting of the pressure servo for the boost pressure control (BPC) valve. Check the boost pressure control (BPC) valve. Check that the pressure servo and the boost pressure control (BPC) valve are functioning correctly and are not sticking

See Pressure regulator, checking/adjusting

Other information

  1. See «Replacing the turbocharger (TC) control valve»(ref-440280-S37124804542011121400000) .
  1. Continue Refer to «Verification»(ref-440289-S16588707002011121400000)

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

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Test drive the vehicle on the road. Ensure that high boost pressure is reached (high load) so that the engine control module (ECM) can run the diagnostic
  4. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S11211676322011121400000)

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.

Scheme 264

Scheme 264: Checking for air leakage
Scheme 264: Checking for air leakage
  1. Ignition off.

Check the intake system for air leakage and loose charge-air pipe.

See Air leakage in the intake system, checking

Does the problem persist?

  1. YES Refer to «Checking hoses and the turbocharger (TC) control valve»(ref-440289-S37419999132011121400000)
  2. NO Refer to «Verification»(ref-440289-S00684206362011121400000)

Check the turbocharger (TC) control valve by activating it. The turbocharger (TC) control valve must click when it is activated.

Check the setting of the pressure servo for the boost pressure control (BPC) valve. Check the boost pressure control (BPC) valve. Check that the pressure servo and the boost pressure control (BPC) valve are functioning correctly and are not sticking: Wastegate valve, adjusting

Other information

  1. See «Replacing the turbocharger (TC) control valve»(ref-440280-S37124804542011121400000)
  2. See «Quick check, turbocharger (TC)»(ref-440268-S27606993462011121400000)
  3. See «Turbocharger (TC), replacing»(ref-440280-S06718304622011121400000)
  1. Continue Refer to «Verification»(ref-440289-S00684206362011121400000)

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

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Test drive the vehicle on the road. Ensure that high boost pressure is reached (high load) so that the engine control module (ECM) can run the diagnostic
  4. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S04917229432011121400000)

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

  1. Ignition off.

Check the intake system for air leakage and loose charge-air pipe.

See Air leakage in the intake system, checking

Does the problem persist?

  1. YES See «Checking hoses and the turbocharger (TC) control valve»(ref-440289-S04220181112011121400000)
  2. NO See «Verification»(ref-440289-S21104983362011121400000)

Check the turbocharger (TC) control valve by activating it. The turbocharger (TC) control valve must click when it is activated.

Check the setting of the pressure servo for the boost pressure control (BPC) valve. Check the boost pressure control (BPC) valve. Check that the pressure servo and the boost pressure control (BPC) valve are functioning correctly and are not sticking: Wastegate valve adjusting

Other information

  1. See «Replacing the turbocharger (TC) control valve»(ref-440280-S37124804542011121400000)
  2. See «Quick check, turbocharger (TC)»(ref-440268-S27606993462011121400000)
  3. See «Turbocharger, replacing»(ref-440280-S12110383182011121400000)
  1. Continue See «Verification»(ref-440289-S21104983362011121400000)
  1. VERIFICATION FAILED: 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 information»(ref-440289-S36549757262011121400000)
  2. VERIFIED OKAY: Troubleshooting has been completed.
  1. FAULT TRACING FAILED FAULT TRACING FAILED: 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.
  1. Ignition off.

Check the intake system for air leakage and loose charge-air pipe.

See Air leakage in the intake system, checking

Does the problem persist?

  1. YES Refer to «Checking hoses and the turbocharger (TC) control valve»(ref-440289-S04071059202011121400000)
  2. NO Refer to «Verification»(ref-440289-S07685863202011121400000)

Check the turbocharger (TC) control valve by activating it. The turbocharger (TC) control valve must click when it is activated.

Check the setting of the pressure servo for the boost pressure control (BPC) valve. Check the boost pressure control (BPC) valve. Check that the pressure servo and the boost pressure control (BPC) valve are functioning correctly and are not sticking

See Pressure regulator, checking/adjusting

Other information

  1. See «Replacing the turbocharger (TC) control valve»(ref-440280-S37124804542011121400000) .
  2. See «Quick check, turbocharger (TC)»(ref-440268-S27606993462011121400000)
  3. See «Turbocharger (TC), replacing»(ref-440280-S06814885032011121400000)
  1. Continue Refer to «Verification»(ref-440289-S07685863202011121400000)

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

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Test drive the vehicle on the road. Ensure that high boost pressure is reached (high load) so that the engine control module (ECM) can run the diagnostic
  4. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S34110496342011121400000)

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.

  1. Ignition off.

Check the intake system for air leakage and loose charge-air pipe.

See Air leakage in the intake system, checking

Does the problem persist?

  1. YES See «Checking hoses and the turbocharger (TC) control valve»(ref-440289-S17192624382011121400000)
  2. NO See «Verification»(ref-440289-S41298332022011121400000)

Check the turbocharger (TC) control valve by activating it. The turbocharger (TC) control valve must click when it is activated.

Check the setting of the pressure servo for the boost pressure control (BPC) valve. Check the boost pressure control (BPC) valve. Check that the pressure servo and the boost pressure control (BPC) valve are functioning correctly and are not sticking

See Pressure regulator, checking/adjusting

Other information

  1. See «Replacing the turbocharger (TC) control valve»(ref-440280-S37124804542011121400000) .
  2. See «Quick check, turbocharger (TC)»(ref-440268-S27606993462011121400000)
  3. See «Turbocharger (TC), replacing»(ref-461761-S06287718702012040200000)
  1. Continue See «Verification»(ref-440289-S41298332022011121400000)
  1. VERIFICATION FAILED: 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 information»(ref-440289-S40462815942011121400000)
  2. VERIFIED OKAY: Troubleshooting has been completed.
  1. FAULT TRACING FAILED FAULT TRACING FAILED: 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.

Replacing a component

  1. Ignition off. CAUTION: Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work. Replace the engine cooling fan (FC) control module if the engine cooling fan (FC) cannot be activated at all speeds and no faults have been found on wiring and connections. Remedy as necessary. Other information: See «Engine cooling fan (FC), replacing»(ref-440274-S42804862972011121400000)
  1. Continue Refer to «Verification»(ref-440289-S15705849022011121400000)

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

  1. Ignition off
  2. Reinstall the connectors, components etc.
  3. Ignition on. Activate the engine cooling fan (FC). Check all 6 speeds of the engine cooling fan (FC).

Is the engine cooling fan (FC) working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S42745572542011121400000)

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 component

  1. Ignition off.
  2. Check that the engine cooling fan (FC) blade rotates easily. Check that nothing is obstructing the engine cooling fan (FC) blade.
  3. Remedy as necessary.
  4. Ignition on.
  5. Check all speeds of the engine cooling fan (FC). Activate the engine cooling fan (FC) by clicking the VCT2000 symbol.
  1. Continue Refer to «Checking the component and wiring»(ref-440289-S23593168042011121400000)
  1. Ignition off. CAUTION: Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work. Replace the engine cooling fan (FC) control module if the engine cooling fan (FC) cannot be activated at all speeds and no faults have been found on wiring and connections. Remedy as necessary. Other information: See «Engine cooling fan (FC), replacing»(ref-440274-S42804862972011121400000)
  1. Continue Refer to «Verification»(ref-440289-S13427341162011121400000)

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

  1. Ignition off
  2. Reinstall the connectors, components etc.
  3. Ignition on. Activate the engine cooling fan (FC). Check all 6 speeds of the engine cooling fan (FC).

Is the engine cooling fan (FC) working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S33402320712011121400000)

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.

  1. Ignition off.
  2. Check that the fan blade rotates easily. Check that nothing is obstructing the fan
  3. Remedy as necessary
  4. Ignition on
  5. Check all speeds of the engine cooling fan (FC). Activate the engine cooling fan (FC) by clicking the VCT2000 symbol.
  1. Continue Refer to «Checking the component and wiring»(ref-440289-S05691978132011121400000)
  1. Ignition off. CAUTION: Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work. Replace the engine cooling fan (FC) control module if the engine cooling fan (FC) cannot be activated at all speeds and no faults have been found on wiring and connections. Remedy as necessary. Other information: See «Engine cooling fan (FC), replacing»(ref-440274-S42804862972011121400000)
  1. Continue Refer to «Verification»(ref-440289-S16355011412011121400000)

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

  1. Ignition off
  2. Reinstall the connectors, components etc.
  3. Ignition on. Activate the engine cooling fan (FC). Check all 6 speeds of the engine cooling fan (FC).

Is the engine cooling fan (FC) working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S27318929832011121400000)

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.

  1. Ignition off.
  2. Check that the engine cooling fan (FC) blade rotates easily. Check that nothing is obstructing the engine cooling fan (FC) blade.
  3. Remedy as necessary.
  4. Ignition on.
  5. Check all speeds of the engine cooling fan (FC). Activate the engine cooling fan (FC) by clicking the VCT2000 symbol.
  1. Continue Refer to «Checking components and wiring»(ref-440289-S10144187052011121400000)
  1. Ignition off. CAUTION: Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work. Replace the engine cooling fan (FC) control module if the engine cooling fan (FC) cannot be activated at all speeds and no faults have been found on wiring and connections. Remedy as necessary. Other information: See «Engine cooling fan (FC), replacing»(ref-440274-S42804862972011121400000)
  1. Continue Refer to «Verification»(ref-440289-S00824673012011121400000)

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

  1. Ignition off
  2. Reinstall the connectors, components etc.
  3. Ignition on. Activate the engine cooling fan (FC). Check all 6 speeds of the engine cooling fan (FC).

Is the engine cooling fan (FC) working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S24581704492011121400000)

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).

Faulty signal. Intermittent fault

See Faulty signal. Intermittent fault

See Faulty signal. Intermittent fault

See Faulty signal. Intermittent fault

  1. Ignition off.
  2. Check that the fan blade rotates easily. Check that nothing is obstructing the fan.
  3. Remedy as necessary.
  4. Ignition on.
  5. Check all speeds of the engine cooling fan (FC). Activate the engine cooling fan (FC) by clicking the VCT2000 symbol.
  1. Continue Refer to «Checking component»(ref-440289-S20514916692011121400000)

Checking component

  1. Ignition off. CAUTION: Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work. If the engine cooling fan (FC) cannot be activated at any speed: Check the fuse, power supply cable and ground lead for the engine cooling fan (FC). Check the connector and wiring between the engine control module (ECM) and engine cooling fan (FC) module. Check for damage. Check for an open circuit. Check for a short circuit. If the engine cooling fan (FC) can be activated at one or more speeds: Check the connectors to the engine cooling fan (FC) control module and Engine Control Module (ECM). Check for damage to pins and connections. Also check other connectors and connections that connect cables between Engine Control Module (ECM) and the control module for electric cooling fan. Check the wiring between the engine control module (ECM) and the engine cooling fan (FC) module. Check for damage. Remedy as necessary. Other information: See «Connecting the breakout box»(ref-440211-S03702023042011121400000) 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 «Engine cooling fan (FC), replacing»(ref-440274-S42804862972011121400000) See «Checking wiring and terminals»(ref-440209-S18666729612011121400000)

Was a fault detected?

  1. YES Refer to «Verification»(ref-440289-S15011694652011121400000)
  2. NO Refer to «Replacing a component»(ref-440289-S17456365772011121400000)
  1. Ignition off. CAUTION: Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work. Replace the engine cooling fan (FC) control module if the engine cooling fan (FC) cannot be activated at all speeds and no faults have been found on wiring and connections. Remedy as necessary. Other information: See «Engine cooling fan (FC), replacing»(ref-440274-S42804862972011121400000)
  1. Continue Refer to «Verification»(ref-440289-S15011694652011121400000)

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

  1. Ignition off.
  2. Reinstall the connectors, components etc.
  3. Ignition on. Activate the engine cooling fan (FC). Check that all the 3 engine cooling fan (FC) speeds function.

Is the engine cooling fan (FC) working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S41324373082011121400000)

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

See Faulty signal. Permanent fault

See Faulty signal. Permanent fault

HINT: Diagnostic trouble code (DTC) may be caused by a damaged fuse. If the engine does not start, check the fuse for the power supply to the camshaft reset valve.

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. The fault is intermittent if the function is OK. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the vehicle is delivered to the customer.
  1. Continue Refer to «Checking components»(ref-440289-S36942123102011121400000)

Check the level and quality of the engine oil. Check for contaminants in particular.

Check the engine oil pressure.

Remove the camshaft reset valve. Check the oil ducts for the cylinder head for the camshaft reset valve (intake) for blockages and dirt.

HINT: The fault can be caused by contaminants in the camshaft reset valve. Try cleaning the valve.

Remedy as necessary.

Try a new intake camshaft reset valve if the above remedy does not solve the fault.

HINT: The fault may also have been caused by an internal fault in the variable valve timing unit. The variable valve timing unit may be damaged if the above fault-tracing and corrective action do not remedy the fault.

Other information

  1. See «Checking oil pressure»(ref-440290-S04777117452011121400000)
  2. See «VVT solenoid, inspection and cleaning»(ref-461760-S18954093482012040200000)
  3. For B6xx4x -2001, see «Variable valve timing solenoid, replacing»(ref-440293-S14706191732011121400000)
  4. For B6xx4x 2002-, see «Replacing the variable valve timing solenoid»(ref-440293-S12724902612011121400000) .
  5. See «Camshaft seal/variable valve timing (VVT) unit, replacing»(ref-461752-S25200707242012040200000)
  1. Continue Refer to «Verification»(ref-440289-S35253550432011121400000)

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

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S21251402292011121400000)

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

See Signal missing. Intermittent fault

See Signal missing. Intermittent fault

  1. Ignition off.
  2. Check that the fan blade rotates easily. Check that nothing is obstructing the fan.
  3. Remedy as necessary.
  4. Ignition on.
  5. Check all speeds of the engine cooling fan (FC). Activate the engine cooling fan (FC) by clicking the VCT2000 symbol.
  1. Continue Refer to «Checking components and wiring»(ref-440289-S34714140972011121400000)
  1. Ignition off. CAUTION: Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work. Replace the engine cooling fan (FC) control module if the engine cooling fan (FC) cannot be activated at all speeds and no faults have been found on wiring and connections. Remedy as necessary. Other information See «Engine cooling fan (FC), replacing»(ref-440274-S42804862972011121400000)
  1. Continue Refer to «Verification»(ref-440289-S06904723102011121400000)

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

  1. Ignition off.
  2. Reinstall connectors, components etc.
  3. Ignition on. Activate the engine cooling fan (FC). Check that all 3 engine cooling fan (FC) speeds function.

Is the engine cooling fan (FC) working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S10000518962011121400000)

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

See Signal missing. Permanent fault

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

See Signal too high. Intermittent fault

See Signal too high. Intermittent fault

  1. Ignition off.
  2. Check that the engine cooling fan (FC) blade rotates easily. Check that nothing is obstructing the engine cooling fan (FC) blade.
  3. Remedy as necessary.
  4. Ignition on.
  5. Check all speeds of the engine cooling fan (FC). Activate the engine cooling fan (FC) by clicking the VCT2000 symbol.
  1. Continue Refer to «Checking components and wiring»(ref-440289-S16521648682011121400000)
  1. Ignition off. CAUTION: Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work. Replace the engine cooling fan (FC) control module if the engine cooling fan (FC) cannot be activated at all speeds and no faults have been found on wiring and connections. Remedy as necessary. Other information See «Engine cooling fan (FC), replacing»(ref-440274-S42804862972011121400000)
  1. Continue Refer to «Verification»(ref-440289-S29525113192011121400000)

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

  1. Ignition off.
  2. Reinstall connectors, components etc.
  3. Ignition on. Activate the engine cooling fan (FC). Check that all 3 engine cooling fan (FC) speeds function.

Is the engine cooling fan (FC) working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S31728489442011121400000)

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 Signal too high. Permanent fault

See Signal too high. 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 low. Intermittent fault

See Signal too low. Intermittent fault

See Signal too low. Intermittent fault

  1. Ignition off.
  2. Check that the fan blade rotates easily. Check that nothing is obstructing the fan.
  3. Remedy as necessary.
  4. Ignition on.
  5. Check all speeds of the engine cooling fan (FC). Activate the engine cooling fan (FC) by clicking the VCT2000 symbol.
  1. Continue Refer to «Checking components and wiring»(ref-440289-S30133710152011121400000)
  1. Ignition off. CAUTION: Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work. Replace the engine cooling fan (FC) control module if the engine cooling fan (FC) cannot be activated at all speeds and no faults have been found on wiring and connections. Remedy as necessary. Other information See «Engine cooling fan (FC), replacing»(ref-440274-S42804862972011121400000)
  1. Continue Refer to «Verification»(ref-440289-S42701061232011121400000)

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

  1. Ignition off.
  2. Reinstall connectors, components etc.
  3. Ignition on. Activate the engine cooling fan (FC). Check that all 3 engine cooling fan (FC) speeds function.

Is the engine cooling fan (FC) working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S29738853852011121400000)

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

See Signal too low. Permanent fault

See Signal too low. Permanent fault

  1. Ignition off.
  2. Check that the engine cooling fan (FC) blade rotates easily. Check that nothing is obstructing the engine cooling fan (FC) blade.
  3. Remedy as necessary.
  4. Ignition on.
  5. Check all speeds of the engine cooling fan (FC). Activate the engine cooling fan (FC) by clicking the VCT2000 symbol.
  1. Continue Refer to «Checking the component and wiring»(ref-440289-S25193073742011121400000)
  1. Ignition off. CAUTION: Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work. Replace the engine cooling fan (FC) control module if the engine cooling fan (FC) cannot be activated at all speeds and no faults have been found on wiring and connections. Remedy as necessary. Other information See «Engine cooling fan (FC), replacing»(ref-440274-S42804862972011121400000)
  1. Continue Refer to «Verification»(ref-440289-S10903847972011121400000)

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

  1. Ignition off
  2. Reinstall the connectors, components etc.
  3. Ignition on. Activate the engine cooling fan (FC). Check all 6 speeds of the engine cooling fan (FC).

Is the engine cooling fan (FC) working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S30474846632011121400000)

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.

  1. Ignition off.
  2. Check that the engine cooling fan (FC) blade rotates easily. Check that nothing is obstructing the engine cooling fan (FC) blade.
  3. Remedy as necessary.
  4. Check all speeds of the engine cooling fan (FC). Activate the engine cooling fan (FC) by clicking the VCT2000 symbol.
  1. Continue Refer to «Checking the component and wiring»(ref-440289-S24570506372011121400000)
  1. Ignition off. CAUTION: Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work. Replace the engine cooling fan (FC) control module if the engine cooling fan (FC) cannot be activated at all speeds and no faults have been found on wiring and connections. Remedy as necessary. Other information See «Engine cooling fan (FC), replacing»(ref-440274-S42804862972011121400000)
  1. Continue Refer to «Verification»(ref-440289-S22497779752011121400000)

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

  1. Ignition off
  2. Reinstall the connectors, components etc.
  3. Ignition on. Activate the engine cooling fan (FC). Check all 6 speeds of the engine cooling fan (FC).

Is the engine cooling fan (FC) working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S09256163882011121400000)

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.

  1. Ignition off.
  2. Check that the engine cooling fan (FC) blade rotates easily. Check that nothing is obstructing the engine cooling fan (FC) blade.
  3. Remedy as necessary.
  4. Ignition on.
  5. Check all speeds of the engine cooling fan (FC). Activate the engine cooling fan (FC) by clicking the VCT2000 symbol.
  1. Continue Refer to «Checking the component and wiring»(ref-440289-S42624727212011121400000)
  1. Ignition off. CAUTION: Avoid touching the pins in the control module and the corresponding connector on the cable harness. There is a risk of static discharge which could damage the control module. Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work. Replace the engine cooling fan (FC) control module if the engine cooling fan (FC) cannot be activated at all speeds and no faults have been found on wiring and connections. Remedy as necessary. Other information See «Engine cooling fan (FC), replacing»(ref-440274-S42804862972011121400000)
  1. Continue Refer to «Verification»(ref-440289-S33810609642011121400000)

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

  1. Ignition off
  2. Reinstall the connectors, components etc.
  3. Ignition on. Activate the engine cooling fan (FC). Check all 6 speeds of the engine cooling fan (FC).

Is the engine cooling fan (FC) working?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S05221105692011121400000)

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.

Slow/Faulty

See Slow/Faulty

HINT: The diagnostic trouble code (DTC) may be caused by a defective fuse. If the engine does not start, check the fuse for the power supply to the camshaft reset valve.

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. The fault is intermittent if the function is OK. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.
  1. Continue Refer to «Checking the wiring»(ref-440289-S15816751822011121400000)

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

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S18906241332011121400000)

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.

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. The fault is intermittent if the function is OK. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.
  1. Continue Refer to «Checking the wiring»(ref-440289-S31854440202011121400000)

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

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S19401314842011121400000)

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 or signal missing

See Signal too low or signal missing

HINT: Diagnostic trouble code (DTC) may be caused by a damaged fuse. If the engine does not start, check the fuse for the power supply to the camshaft reset valve.

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. Let the engine return to idle speed to start the test again. Then increase the engine speed to approximately 2500 RPM. The fault is intermittent if the function is OK. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the vehicle is delivered to the customer.
  1. Continue Refer to «Checking components»(ref-440289-S24262997772011121400000)

Check the level and quality of the engine oil. Check for contaminants in particular.

Check the engine oil pressure.

Remove the camshaft reset valve. Check the oil ducts for the cylinder head for the camshaft reset valve (exhaust) for blockages and dirt.

HINT: The fault can be caused by contaminants in the camshaft reset valve. Try cleaning the valve.

Remedy as necessary.

Try a new intake camshaft reset valve if the above remedy does not solve the fault.

HINT: The fault may also have been caused by an internal fault in the variable valve timing unit. The variable valve timing unit may be damaged if the above fault-tracing and corrective action do not remedy the fault.

Other information

  1. See «Checking oil pressure»(ref-440290-S04777117452011121400000)
  2. See «VVT solenoid, inspection and cleaning»(ref-461760-S18954093482012040200000)
  3. For B6xx4x -2001, see «Variable valve timing solenoid, replacing»(ref-440293-S14706191732011121400000)
  4. For B6xx4x 2002-, see «Replacing the variable valve timing solenoid»(ref-440293-S12724902612011121400000) .
  5. See «Camshaft seal/variable valve timing (VVT) unit, replacing»(ref-461752-S25200707242012040200000)
  1. Continue Refer to «Verification»(ref-440289-S38263919162011121400000)

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

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S20671953582011121400000)

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 Slow/Faulty

HINT: The diagnostic trouble code (DTC) may be caused by a defective fuse. If the engine does not start, check the fuse for the power supply to the camshaft reset valve.

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. The fault is intermittent if the function is OK. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.
  1. Continue Refer to «Checking the wiring»(ref-440289-S30365538712011121400000)

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

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S41384555262011121400000)

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.

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. The fault is intermittent if the function is OK. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.
  1. Continue Refer to «Checking the wiring»(ref-440289-S11675570352011121400000)

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

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S30380053222011121400000)

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 or signal missing

See Fault-tracing information

See Fault-tracing information

See Signal too high

See Signal too low

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 Signal missing

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 Signal too high

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 Signal too low

Information

The diagnostic trouble code (DTC) may for example be stored when

  1. Insufficient coolant in cooling system.
  2. Clogged radiator.

These should therefore be checked and rectified first.

Scheme 265

Scheme 265
Scheme 265
  1. Continue Refer to «Checking the function»(ref-440289-S00249428822011121400000)

Checking the function

  1. Ignition on. Activate the engine cooling fan (FC). Check that it starts and runs normally. Try by activating different speeds on the electric cooling fan. Remedy as necessary. Other information See «Engine cooling fan (FC), replacing»(ref-440274-S42804862972011121400000)
  1. Continue Refer to «Checking the component and wiring»(ref-440289-S28412372962011121400000)

Scheme 266

Scheme 266
Scheme 266

Scheme 267

Scheme 267
Scheme 267
  1. Ignition off.
  2. Unplug the engine temperature sensor connectors. 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) For 5-cylinder turbocharged engines and 6-cylinder engines 2001, see «Component specifications»(ref-440279-S36691068112011121400000) . For 5-cylinder turbocharged engines and 6-cylinder engines 2002, see «Component specifications»(ref-440279-S32869788892011121400000) . For 5 cylinder turbocharged engines and 6 cylinder engines 2003-, see «Component specifications»(ref-440279-S29470938672011121400000) . For B5254T4 2004-, see «Component specifications»(ref-440279-S23854582792011121400000) . For 5-cylinder normally aspirated engines 1999-, see «Component specifications»(ref-461750-S15174393772012040200000) See «Temperature sensor engine coolant, replacing»(ref-461758-S26261417092012040200000) See «Checking wiring and terminals»(ref-440209-S33835172972011121400000)
  1. Continue Refer to «Verification»(ref-440289-S41147768932011121400000)

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

  1. Verification should begin with a cold engine (+20 °C) so that the engine coolant temperature (ECT) sensor can be tested over as wide a temperature range as possible
  2. Ignition off
  3. Reconnect the connectors, reinstall components etc.
  4. Start the engine. Read off the engine coolant temperature (ECT) sensor signal. Check that the engine coolant temperature (ECT) is within its permitted range and corresponds with the engine warming up.

Is the temperature within its permitted range?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S36808470742011121400000)

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. Intermittent fault

See Signal missing. 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

See Signal too high

See Signal too low or signal missing

HINT: The diagnostic trouble code (DTC) may be caused by a defective fuse. If the engine does not start, check the fuse for the power supply to the camshaft reset valve.

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2000 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2000 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2000 RPM. The fault is intermittent if the function is OK. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.
  1. Continue Refer to «Checking the wiring»(ref-440289-S11910460182011121400000)

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

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2000 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2000 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2000 RPM. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S40268285352011121400000)

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: The diagnostic trouble code (DTC) may be caused by a defective fuse. If the engine does not start, check the fuse for the power supply to the camshaft reset valve.

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. The fault is intermittent if the function is OK. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.
  1. Continue Refer to «Checking components»(ref-440289-S26150375222011121400000)

Check the engine oil level and quality. Check for contaminants in particular.

Check the engine oil pressure.

Remove the camshaft reset valve. Check the oil ducts for the cylinder head for the camshaft reset valve (intake) for blockages and dirt.

HINT: Faults may result from dirt in the camshaft reset valve. Try cleaning the valve.

Remedy as necessary.

Try a new intake camshaft reset valve if the above remedy does not solve the fault.

HINT: The fault may also have been caused by an internal fault in the variable valve timing unit. The variable valve timing unit may be defective if the above fault tracing and corrective action does not remedy the fault.

Other information

  1. To check the oil pressure, see «Checking oil pressure»(ref-440290-S04777117452011121400000)
  2. To clean the camshaft reset valve, see «VVT solenoid, inspection and cleaning»(ref-461760-S18954093482012040200000)
  3. To replace the camshaft reset valve: For B6xx4x -2001, see «Variable valve timing solenoid, replacing»(ref-440293-S14706191732011121400000) For B6xx4x 2002-, see «Replacing the variable valve timing solenoid»(ref-440293-S12724902612011121400000) .
  4. To access or replace the variable valve timing unit, see «Camshaft seal/variable valve timing (VVT) unit, replacing»(ref-461752-S25200707242012040200000) .
  1. Continue Refer to «Verification»(ref-440289-S32638940122011121400000)

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

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S06747018482011121400000)

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: The diagnostic trouble code (DTC) may be caused by a defective fuse. If the engine does not start, check the fuse for the power supply to the camshaft reset valve.

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2000 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2000 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2000 RPM. The fault is intermittent if the function is OK. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.
  1. Continue Refer to «Checking components»(ref-440289-S38837005082011121400000)

Check the engine oil level and quality. Check for contaminants in particular.

Check the engine oil pressure.

Remove the camshaft reset valve. Check the oil ducts for the cylinder head for the camshaft reset valve (intake) for blockages and dirt.

HINT: Faults may result from dirt in the camshaft reset valve. Try cleaning the valve.

Remedy as necessary.

Try a new intake camshaft reset valve if the above remedy does not solve the fault.

HINT: The fault may also have been caused by an internal fault in the variable valve timing unit. The variable valve timing unit may be defective if the above fault tracing and corrective action does not remedy the fault.

Other information

  1. To check the oil pressure, see «Checking oil pressure»(ref-440290-S04777117452011121400000)
  2. To clean the camshaft reset valve, see «VVT solenoid, inspection and cleaning»(ref-461760-S18954093482012040200000)
  3. To replace the camshaft reset valve: For B6xx4x -2001, see «Variable valve timing solenoid, replacing»(ref-440293-S14706191732011121400000) For B6xx4x 2002-, see «Replacing the variable valve timing solenoid»(ref-440293-S12724902612011121400000) .
  4. To access or replace the variable valve timing unit, see «Camshaft seal/variable valve timing (VVT) unit, replacing»(ref-461752-S25200707242012040200000) .

Scheme 268

Scheme 268
Scheme 268
  1. Continue Refer to «Verification»(ref-440289-S11542531532011121400000)

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

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2000 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2000 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2000 RPM. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S28351838732011121400000)

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 particularly that the boost pressure sensor is correctly installed and has not come loose.

Check the intake system for air leakage. Check in particular the hose between the turbocharger (TC) and the throttle unit.

The boost pressure sensor is damaged if no fault is found in the above fault-tracing.

Other information

  1. See «Check for air leaks in the intake system»(ref-440264-S10239834622011121400000)
  2. See «Temperature and pressure sensor, replacing»(ref-461759-S30434624902012040200000) .
  1. Continue Refer to «Verification»(ref-440289-S36321597012011121400000)

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

  1. Ignition off
  2. Reconnect the connectors, reinstall components etc.
  3. Test drive the vehicle on the road. Ensure that high boost pressure is reached (high load) so that the engine control module (ECM) can run the diagnostic
  4. Connect VCT2000 to the data link connector (DLC) without switching off the engine. NOTE: If the engine is switched off, the stored fault status will be erased and the test drive will have to be repeated. Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list. Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S09646901342011121400000)

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 / Signal too low

See Signal too high / Signal too low

See Signal too high

See Signal too low or signal missing

HINT: The diagnostic trouble code (DTC) may be caused by a defective fuse. If the engine does not start, check the fuse for the power supply to the camshaft reset valve.

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2000 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2000 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2000 RPM. The fault is intermittent if the function is OK. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.
  1. Continue Refer to «Checking the wiring»(ref-440289-S03182846832011121400000)

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

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2000 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2000 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2000 RPM. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S12989393582011121400000)

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: The diagnostic trouble code (DTC) may be caused by a defective fuse. If the engine does not start, check the fuse for the power supply to the camshaft reset valve.

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. The fault is intermittent if the function is OK. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.
  1. Continue Refer to «Checking components»(ref-440289-S03060632672011121400000)

Check the engine oil level and quality. Check for contaminants in particular.

Check the engine oil pressure.

Remove the camshaft reset valve. Check the oil ducts for the cylinder head for the camshaft reset valve (exhaust) for blockages and dirt.

HINT: Faults may result from dirt in the camshaft reset valve. Try cleaning the valve.

Remedy as necessary.

Try a new intake camshaft reset valve if the above remedy does not solve the fault.

HINT: The fault may also have been caused by an internal fault in the variable valve timing unit. The variable valve timing unit may be defective if the above fault tracing and corrective action does not remedy the fault.

Other information

  1. To check the oil pressure, see «Checking oil pressure»(ref-440290-S04777117452011121400000)
  2. To clean the camshaft reset valve, see «VVT solenoid, inspection and cleaning»(ref-461760-S18954093482012040200000)
  3. To replace the camshaft reset valve: For B6xx4x -2001, see «Variable valve timing solenoid, replacing»(ref-440293-S14706191732011121400000) For B6xx4x 2002-, see «Replacing the variable valve timing solenoid»(ref-440293-S12724902612011121400000) .
  4. To access or replace the variable valve timing unit, see «Camshaft seal/variable valve timing (VVT) unit, replacing»(ref-461752-S25200707242012040200000) .
  1. Continue Refer to «Verification»(ref-440289-S38002049962011121400000)

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

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2500 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2500 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2500 RPM. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S36169796782011121400000)

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: The diagnostic trouble code (DTC) may be caused by a defective fuse. If the engine does not start, check the fuse for the power supply to the camshaft reset valve.

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2000 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2000 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2000 RPM. The fault is intermittent if the function is OK. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.
  1. Continue Refer to «Checking components»(ref-440289-S04784772202011121400000)

Check the engine oil level and quality. Check for contaminants in particular.

Check the engine oil pressure.

Remove the camshaft reset valve. Check the oil ducts for the cylinder head for the camshaft reset valve (exhaust) for blockages and dirt.

HINT: Faults may result from dirt in the camshaft reset valve. Try cleaning the valve.

Remedy as necessary.

Try a new intake camshaft reset valve if the above remedy does not solve the fault.

HINT: The fault may also have been caused by an internal fault in the variable valve timing unit. The variable valve timing unit may be defective if the above fault tracing and corrective action does not remedy the fault.

Other information

  1. To check the oil pressure, see «Checking oil pressure»(ref-440290-S04777117452011121400000)
  2. To clean the camshaft reset valve, see «VVT solenoid, inspection and cleaning»(ref-461760-S18954093482012040200000)
  3. To replace the camshaft reset valve: For B6xx4x -2001, see «Variable valve timing solenoid, replacing»(ref-440293-S14706191732011121400000) For B6xx4x 2002-, see «Replacing the variable valve timing solenoid»(ref-440293-S12724902612011121400000) .
  4. To access or replace the variable valve timing unit, see «Camshaft seal/variable valve timing (VVT) unit, replacing»(ref-461752-S25200707242012040200000) .
  1. Continue Refer to «Verification»(ref-440289-S26263751402011121400000)

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

  1. Start the engine
  2. Read off the value for the camshaft shift angle and the desired value for the camshaft shift angle
  3. Active the quick test of camshaft control by clicking the start button
  4. Increase the engine speed (RPM) to approximately 2000 RPM and keep the engine running at this speed. When the engine speed (RPM) increases, the control module will start the quick test to control the shift angle of the camshaft to the different target values. There is a fault if the control module does not operate the camshaft shift angle to the different target values. During the quick test, check that the shift angle of the camshaft (actual value) corresponds to the target values to an accuracy of 10°. If the shift angle of the camshaft (target value) does not change, or if the actual value does not correspond to the target value, the function is faulty. Deviation between the values can be read off in the lower display. Carry out the check for approximately 15 seconds at an engine speed (RPM) of 2000 RPM. The test is completed when the shift angle of the camshaft returns to 0°. To restart the test, let the engine return to idle speed, then increase the engine speed to approximately 2000 RPM. NOTE: The test is active until the ignition is switched off. Switch off the ignition before the car is delivered to the customer.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S08619334302011121400000)

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.

  1. Start the engine and run it to normal operating temperature
  2. Read off and note the adaptation value for the camshaft at idle speed. The value must be between -8° and +8°. If the adaptation value is correct (between -8° and +8°) the fault is intermittent. If the adaptation value is incorrect (lower than -8° or higher than +8°), the fault is permanent.

Is the adaptation value correct?

  1. YES Refer to «Intermittent fault»(ref-440289-S34759950462011121400000)
  2. NO Refer to «Checking components»(ref-440289-S30309310772011121400000)

For variable valve timing control to operate correctly the engine oil must be at the correct level, of the correct quality and not contaminated.

Check the engine oil level and quality. Check for contaminants in particular.

If the adaptation value is too high (higher than +8°) when the engine is at operating temperature, the cause of the fault is probably one of the following

  1. the timing belt is incorrectly seated
  2. incorrect base setting of the timing belt
  3. faulty camshaft reset valve (the slide in the valve has stuck).

HINT: First try adjusting the basic set up of the camshaft. Then read off the adaptation value for the camshaft at idle speed with the engine at operating temperature. The value must be between -8° and +8°. If the adaptation value is incorrect when the basic setting of the camshaft is correct, try cleaning the camshaft reset valve.

Note. The camshafts must be adjusted using the adjustment tool for the camshafts and crankshaft in the prescribed manner.

Try a new camshaft reset valve if the above fault-tracing does not solve the fault.

Remedy as necessary.

HINT: The fault can also be caused by a defective variable valve timing unit. The variable valve timing unit may be defective if the above fault tracing and corrective action does not remedy the fault.

Other information

  1. To clean the camshaft reset valve, see «VVT solenoid, inspection and cleaning»(ref-461760-S18954093482012040200000)
  2. To adjust the camshaft position (CMP), see «Camshaft seal/variable valve timing (VVT) unit, replacing»(ref-461752-S25200707242012040200000)
  3. To replace the camshaft reset valve: For B6xx4x -2001, see «Variable valve timing solenoid, replacing»(ref-440293-S14706191732011121400000) For B6xx4x 2002-, see «Replacing the variable valve timing solenoid»(ref-440293-S12724902612011121400000) .
  1. Continue Refer to «Verification»(ref-440289-S00506150712011121400000)

Intermittent fault

If the diagnostic trouble code (DTC) for this fault is stored but the adaptation value is correct, the fault is intermittent. The cause of the intermittent fault is probably a defective camshaft reset valve.

HINT: Faults may result from dirt in the camshaft reset valve. Try cleaning the valve.

Other information

  1. To clean the camshaft reset valve, see «VVT solenoid, inspection and cleaning»(ref-461760-S18954093482012040200000)
  2. To replace the camshaft reset valve: For B6xx4x -2001, see «Variable valve timing solenoid, replacing»(ref-440293-S14706191732011121400000) For B6xx4x 2002-, see «Replacing the variable valve timing solenoid»(ref-440293-S12724902612011121400000) .
  3. To adjust the camshaft position (CMP), see «Camshaft seal/variable valve timing (VVT) unit, replacing»(ref-461752-S25200707242012040200000) .
  1. Continue Refer to «Verification»(ref-440289-S00506150712011121400000)

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

  1. Start the engine and run it to normal operating temperature
  2. Read off the camshaft adaptation at idle speed. The adaptation value must be between -8° and +8. The function is OK if the adaptation value is correct.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S35044077332011121400000)

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.

  1. Start the engine and run it to normal operating temperature
  2. Read off and note the adaptation value for the camshaft at idle speed. The value must be between -8° and +8°. If the adaptation value is correct (between -8° and +8°) the fault is intermittent. If the adaptation value is incorrect (lower than -8° or higher than +8°), the fault is permanent.

Is the adaptation value correct?

  1. YES Refer to «Intermittent fault»(ref-440289-S07248181372011121400000)
  2. NO Refer to «Checking components»(ref-440289-S01399052892011121400000)

For variable valve timing control to operate correctly the engine oil must be at the correct level, of the correct quality and not contaminated.

Check the engine oil level and quality. Check for contaminants in particular.

If the adaptation value is too high (higher than +8°) when the engine is at operating temperature, the cause of the fault is probably one of the following

  1. the timing belt is incorrectly seated
  2. incorrect base setting of the timing belt
  3. faulty camshaft reset valve (the slide in the valve has stuck).

HINT: First try adjusting the basic set up of the camshaft. Then read off the adaptation value for the camshaft at idle speed with the engine at operating temperature. The value must be between -8° and +8°. If the adaptation value is incorrect when the basic setting of the camshaft is correct, try cleaning the camshaft reset valve.

Note. The camshafts must be adjusted using the adjustment tool for the camshafts and crankshaft in the prescribed manner.

Try a new camshaft reset valve if the above fault-tracing does not solve the fault.

Remedy as necessary.

HINT: The fault can also be caused by a defective variable valve timing unit. The variable valve timing unit may be defective if the above fault tracing and corrective action does not remedy the fault.

Other information

  1. To clean the camshaft reset valve, see «VVT solenoid, inspection and cleaning»(ref-461760-S18954093482012040200000)
  2. To adjust the camshaft position (CMP), see «Camshaft seal/variable valve timing (VVT) unit, replacing»(ref-461752-S25200707242012040200000)
  3. To replace the camshaft reset valve: For B6xx4x -2001, see «Variable valve timing solenoid, replacing»(ref-440293-S14706191732011121400000) For B6xx4x 2002-, see «Replacing the variable valve timing solenoid»(ref-440293-S12724902612011121400000) .
  1. Continue Refer to «Verification»(ref-440289-S28063813832011121400000)

If the diagnostic trouble code (DTC) for this fault is stored but the adaptation value is correct, the fault is intermittent. The cause of the intermittent fault is probably a defective camshaft reset valve.

HINT: Faults may result from dirt in the camshaft reset valve. Try cleaning the valve.

Other information

  1. To clean the camshaft reset valve, see «VVT solenoid, inspection and cleaning»(ref-461760-S18954093482012040200000)
  2. To replace the camshaft reset valve: For B6xx4x -2001, see «Variable valve timing solenoid, replacing»(ref-440293-S14706191732011121400000) For B6xx4x 2002-, see «Replacing the variable valve timing solenoid»(ref-440293-S12724902612011121400000) .
  3. To adjust the camshaft position (CMP), see «Camshaft seal/variable valve timing (VVT) unit, replacing»(ref-461752-S25200707242012040200000) .
  1. Continue Refer to «Verification»(ref-440289-S28063813832011121400000)

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

  1. Start the engine and run it to normal operating temperature
  2. Read off the camshaft adaptation at idle speed. The adaptation value must be between -8° and +8. The function is OK if the adaptation value is correct.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S03154009532011121400000)

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.

  1. Start the engine and run it to normal operating temperature
  2. Read off and note the adaptation value for the camshaft at idle speed. The value must be between -8° and +8°. If the adaptation value is correct (between -8° and +8°) the fault is intermittent. If the adaptation value is incorrect (lower than -8° or higher than +8°), the fault is permanent.
  1. Continue Refer to «Checking components»(ref-440289-S05257200562011121400000)

For variable valve timing control to operate correctly the engine oil must be at the correct level, of the correct quality and not contaminated.

Check the engine oil level and quality. Check for contaminants in particular.

Adjust the camshaft settings.

Note. The camshafts must be adjusted using the adjustment tool for the camshafts and crankshaft in the prescribed manner.

Other information

  1. To adjust the camshaft position (CMP), see «Camshaft seal/variable valve timing (VVT) unit, replacing»(ref-461752-S25200707242012040200000)
  1. Continue Refer to «Verification»(ref-440289-S23409475982011121400000)

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

  1. Start the engine and run it to normal operating temperature
  2. Read off the camshaft adaptation at idle speed. The adaptation value must be between -8° and +8. The function is OK if the adaptation value is correct.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S35948574092011121400000)

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.

  1. Start the engine and run it to normal operating temperature
  2. Read off and note the adaptation value for the camshaft at idle speed. The value must be between -8° and +8°. If the adaptation value is correct (between -8° and +8°) the fault is intermittent. If the adaptation value is incorrect (lower than -8° or higher than +8°), the fault is permanent.
  1. Continue Refer to «Checking components»(ref-440289-S06918504872011121400000)

For variable valve timing control to operate correctly the engine oil must be at the correct level, of the correct quality and not contaminated.

Check the engine oil level and quality. Check for contaminants in particular.

Adjust the camshaft settings.

Note. The camshafts must be adjusted using the adjustment tool for the camshafts and crankshaft in the prescribed manner.

Other information

  1. To adjust the camshaft position (CMP), see «Camshaft seal/variable valve timing (VVT) unit, replacing»(ref-461752-S25200707242012040200000)
  1. Continue Refer to «Verification»(ref-440289-S10326398412011121400000)

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

  1. Start the engine and run it to normal operating temperature
  2. Read off the camshaft adaptation at idle speed. The adaptation value must be between -8° and +8. The function is OK if the adaptation value is correct.

Is the function OK?

  1. YES VERIFIED: Troubleshooting has been completed.
  2. NO Refer to «Information»(ref-440289-S18462603352011121400000)

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.

More articles — Engine Control Module (ECM) Diagnostic Trouble Codes - 8 of 11