VOLVO
ECM-A600 - Additive dosage module (ADM). Faulty signal
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
3 modelsC30 (2007–2013), S40 (2004–2013), V50 (2004–2013)
What does this fault code mean?
The engine control module keeps watch over CAN traffic to the additive dosage module (ADM). The code is set if the engine control module cannot communicate with the ADM, or if the ADM asks for the malfunction indicator lamp to light. The fault may therefore sit in the ADM, in the CAN communication or in the power supply to the ADM.
Possible causes
- Fault codes are set in the additive dosage module (ADM)
- There is no power supply to the ADM
- Look for CAN-related fault codes in the central electronic module (CEM)
What you can do
- 1Read the fault codes in the ADM and in the central electronic module (CEM) and note which are stored
- 2Remedy the faults in the ADM and the CAN-related codes in the CEM first; this code cannot be cleared until they are remedied and cleared
- 3Check the fuse for the ADM and that its connectors are fully seated and free from oxidation
- 4Clear the fault codes once the faults are remedied and road test the car to see whether it returns
Symptoms you may notice2
- Malfunction indicator lamp on
- Warning symbol and text message in the text window
General guidance for car owners. Diagnosis on the car can point to a different cause.