Signal Too Low/ Signal Too High

Signal too low / signal too high

Checking components and wiring
- Check the boost pressure sensor connector. Check for contact resistance and oxidation.
Check the signal cable between engine control module (ECM) terminal #A23 (#A23) and boost pressure sensor terminal #4. Check for a short-circuit to ground.
Remedy as necessary.

Other information:
- Connecting the breakout box, B5244T5, B5254T2 Connecting the Breakout Box
- For information about signals for 5 cylinder engines: Signal specification Signal Description / Specification
- For information about signals for 6 cylinder engines: Signal specification Signal Description / Specification
- Temperature and pressure sensor, replacing Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals














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 the boost pressure sensor pressure and atmospheric pressure sensor pressure
- The difference between the pressure sensors should not be greater than 140 hPa.





Is the difference between the pressure sensors less than 140hPa?

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 components and wiring

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