Lean. Intermittent Fault

Lean. Intermittent fault

Checking the connectors and components




- Ignition off
- Check the front heated oxygen sensor (HO2S) and control module connectors for contact resistance and oxidation according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults
- Check for too low fuel pressure according to Measuring fuel pressure EMS 2000 Measuring Fuel Pressure EMS 2000
- Check the intake system for leakage according to intake system/leak test Intake System/Leak Test
- Check the exhaust system for leakage according to
- Remedy as necessary.

Other information:
- To access the control module, see Engine control module (ECM), replacing Service and Repair
- To replace the front heated oxygen sensor (HO2S), see Replace the front heated oxygen sensor (HO2S) Service and Repair.













Continue - Resetting the adaptation

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Resetting the adaptation

Note! It is important that the fuel trim is reset after this diagnostic trouble code (DTC) is remedied. If this is not done there may be driveability problems, even though the fault is no longer present.




- Ignition on.




- Click on the VCT2000 symbol to reset the fuel trim

Continue - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
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).

Do you want to view the information again?

Yes - Attempt New Test

No - FAULT FOUND

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Attempt New Test - Checking the connectors and components

FAULT FOUND - DONE

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