Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information CCM-DD12

Condition




The diagnostic trouble code (DTC) is stored if the climate control module (CCM) detects an open-circuit in the communication between the left seat heater and the climate control module (CCM) on LIN bus 1.
The diagnostic trouble code (DTC) can occur together with diagnostic trouble codes (DTCs) for other components on LIN bus 1 (CCM-DD10 - CCM-DD16) depending on where the open-circuit has occurred.
The diagnostic trouble code (DTC) can be detected at key position 1 or 2 (not key position 3).
The diagnostic trouble code (DTC) can only be diagnosed for the climate control module (CCM) when seat heating is installed in the car.

Substitute value
- None.

Possible source
- Open-circuit on LIN bus 1 between the climate control module (CCM) and the left seat heater
- Contact resistance, oxidation or loose connections in the connectors.

Fault symptom[s]
- The front seat heating does not function.