DTC ECM-A03B

Condition
The control modules communicate with each other in a network via a standardized serial communication procedure - CAN (Controller Area Network) - to exchange information.

Diagnostic trouble code (DTC) ECM-A03B is stored if the engine control module (ECM) registers a fault in its communication with the central electronic module.

Substitute value
- None.

Possible source
- Open-circuit in the control area network (CAN) wiring
- Defective central electronic module.

Fault symptom[s]
- None.