Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition




The control modules transmit and receive information via a standardised serial communication method - CAN (Control Area Network). The diagnostic trouble code (DTC) is stored if the transmission control module (TCM) registers serious interference (CAN communication blocked).

Note! In case of a system communication fault, it will not be possible to communicate with the transmission control module (TCM). It will therefore only be possible to read if the fault is intermittent.

Substitute value
- Auxiliary program Emergency mode 1 in the transmission control module (TCM) has started.

Hint: Emergency mode in case of malfunction Emergency Mode In Case of Malfunction

Possible source
- Contact resistance or oxidation in the terminals
- Open-circuit in the control area network (CAN) wiring.
- Short-circuit between the control area network (CAN) wiring.
- Internal fault in transmission control module (TCM).
- Internal fault in another control module in the same part of the control area network (CAN).

Fault symptom[s]
- General warning lamp lit
- No gear changing.