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. For further information about leak diagnostics, see Leak diagnostic Leak Diagnostic.

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.