Faulty Signal

Faulty signal

Checking the intake system
Check that the hoses and hose connectors between the mass air flow (MAF) sensor and the throttle unit are not leaking or defective.
Check that the boost pressure sensor is correctly mounted. Check for air leakage around the component.

Hint: This diagnostic trouble code can be caused by a damaged mass air flow sensor.

Remedy as necessary.

Other information
- Check for air leaks in the intake system Air Leaks in the Intake System, Checking
- Throttle body (TB), cleaning Procedures
- Mass air flow (MAF) sensor, replacing Service and Repair






Continue - Verification

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Verification




Verification

Verification

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








- Ignition off.
- Reinstall the connectors, components etc.
- Ignition on.
- Read off and make a note of the adaptation value.
- Start the engine. Increase the engine speed (RPM) a couple of times.
- Read off the adaptation value and check that the adaptation value approaches 1.









Does the adaptation value approach 1?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFICATION FAILED - Fault-tracing information

VERIFIED - Fault Found

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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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking the intake system

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