Signal Too Low

Signal too low

Checking the connector
Check the mass air flow (MAF) sensor connector. Check for contact resistance and oxidation.
Remedy as necessary.

Other information
- Mass air flow (MAF) sensor, B5254T7 Service and Repair





Continue - Verification

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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 the correction factor for mass air flow and note it
- Start the engine. Increase the engine speed (RPM) a couple of times.
Read off the correction factor for mass air flow and check that the adaptation value is approaching 1. A normal value for the mass air flow correction factor is 0.8-1.2.





Is the value correct?

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 connector

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