Faulty Signal. Permanent Fault

Faulty signal. Permanent fault

Checking the oil pressure
- Check the engine oil quality. Check for contaminants particularly
- Replace the engine oil if necessary
- Check whether the engine oil pressure is unstable. See Oil pressure: Inspecting and replacing the oil pressure sensor Inspecting And Replacing The Oil Pressure Sensor
- Remedy as necessary.

Was the engine oil pressure incorrect?

Yes - Verification

No - Checking oil ducts

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Checking oil ducts
- Remove the camshaft reset valve
- Check the oil ducts for the camshaft reset valve and camshaft pulley in the cylinder head for blockages.

Note! If it is suspected that there are any contaminants in the camshaft reset valve it should be replaced.

- Remedy as necessary
- Try a new camshaft reset valve, if no fault is found in the oil ducts.

Other information:
- To remove or replace the camshaft reset valve, see Replacing the variable valve timing (VVT) control valve Replacing The Variable Valve Timing (VVT) Control Valve.





Continue - Verification

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Verification




Verification




- Let the control module carry out a diagnostic of the CVVT system to verify the diagnostic trouble code (DTC). The control module will only carry out a diagnostic for the diagnostic trouble code (DTC) if the engine coolant temperature (ECT) was between +10°C and +50°C the last time the ignition was switched on. The diagnostic continues until the engine coolant temperature (ECT) is +84°C
- Switch off the ignition. Start the engine. Run the engine at idle speed
- Read off the current engine coolant temperature (ECT), the engine coolant temperature (ECT) the last time the ignition was switched on. Check that the engine coolant temperature (ECT) was between +10°C and +50°C the last time the ignition was switched on.

Note! The diagnostic trouble code (DTC) cannot be verified if the engine coolant temperature (ECT) was not between +10°C and +50°C the last time the ignition was switched on.

- Let the engine run at idle speed until the engine coolant temperature (ECT) is +84°C.





Continue - Verification, continued

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Verification, continued




- Let the engine idle.
Read off diagnostic trouble codes (DTCs).
Check that the status of the diagnostic trouble code (DTC) has changed to intermittent. The fault has been remedied if the status of the diagnostic trouble code (DTC) has changed to intermittent.





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

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

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Fault-tracing information




Information

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.

Do you want to exit fault-tracing?

Yes - Exit fault-tracing

No - Attempt New Test

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FAULT-TRACING FAILED - No Fault Found

Attempt New Test - Checking the oil pressure

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