Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition




The control module performs a function test of the leak diagnostic system. A diagnostic trouble code (DTC) is stored if a faulty position or faulty movement of the leak diagnostic pump membrane is detected.

Substitute value
Leak diagnostics disabled.

Possible source

Signal too high:
- Contact resistance in the terminals
- The vacuum for the leak diagnostic pump is too low or non-existent
- Defective leak diagnostic pump.

Signal too low:
- Open-circuit in the power supply cable for the leak diagnostic pump
- Contact resistance in the terminals
- Defective leak diagnostic pump.

Faulty signal:
- Contact resistance in the terminals
- The pump ventilation for atmospheric pressure is blocked
- Defective leak diagnostic pump.

Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.