Signal Too High

Signal too high

Checking the components and wiring
Check the intake system for air leakage.
Check the exhaust system for air leakage.
Checking fuel and residual pressure.
Check the compression of the engine.
Remedy as necessary.

Note! Try a new catalytic converter if the above fault-tracing does not remedy the fault.

Other information
- Air leaks in the intake system, checking Air Leaks in the Intake System, Checking
- Air leakage exhaust system, check Air Leakage Exhaust System, Check
- Fuel system pressure, checking, B5254T7 Fuel System Pressure, Checking
- Leak detecting cylinder, B5254T7 Component Tests and General Diagnostics





Continue - Verification

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Verification




Verification

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








- Ignition off
- Reconnect the connectors, reinstall components etc.
- Test drive the vehicle and perform a TRIP schedule. See Verifying repairs Verifying Repairs
- 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 dynamic for the front heated oxygen sensor (HO2S).
The value should be higher than 1.0.





Is the value OK?

Yes - Troubleshooting procedure complete

No - 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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Attempt New Test - Checking the components and wiring

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