Signal Too Low. Permanent Fault

Signal too low. Permanent fault

Checking wiring and connectors




- Ignition off.
Check the connectors for the boost pressure sensor and the control module. Check for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.









Continue - Checking the signals for the boost pressure sensors

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Checking the signals for the boost pressure sensors




- Reinstall the connectors
- Ignition on.
Activate the read off for the programmed values.
Check that the value from the boost pressure sensor does not deviate from the manifold absolute pressure (MAP) sensor by more than 200 mbar. The value for the manifold absolute pressure (MAP) sensor is used as a reference value for this test.









Is the value OK?

Yes - FAULT FOUND

No - Checking the boost pressure sensor signal

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Checking the boost pressure sensor signal
Try a new boost pressure sensor if the values for the sensors do not correspond.

Other information
- Boost pressure sensor 1, replacing Boost Pressure Sensor 1, Replacing


Continue - Verification

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Verification




Verification

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




- Reinstall the components, reconnect the connectors etc.
- Ignition on.




- Read off boost pressure sensor 2 (MAP sensor) and boost pressure sensor 1
- Check that the boost pressure valve values are the same. Check that the boost pressure sensor values are within 200 mbar of each other

Are the values for the boost pressure sensors approximately the same?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - 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 wiring and connectors

FAULT-TRACING FAILED - No Fault Found

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