Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information CCM-DD34

Condition




The diagnostic trouble code (DTC) is stored if the climate control module (CCM) detects an open-circuit in the communication between the air quality sensor (AQS) and the climate control module (CCM) on LIN bus 2.
The diagnostic trouble code (DTC) may occur together with diagnostic trouble codes (DTCs) for other components on LIN bus 2 (CCM-DD30 - CCM-DD33) 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 electronic climate control module (CCM) for the electronic climate control (ECC).

Substitute value
- None.

Possible source
- Open-circuit on LIN bus 2 between the climate control module (CCM) and the air quality sensor (AQS)
- Contact resistance, oxidation or loose connections in the connectors.

Fault symptom[s]
- Poor air quality in the passenger compartment.