VOLVO
ECM-U043100 - Invalid Data Received From Body Control Module "A". General Failure Information. No sub type information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
2 modelsS80 (2007–), V70 (2008–)
Show models by year and engine (2)
What does this fault code mean?
The ECM receives the information it needs from the CEM over CAN and checks its quality. Although the fault is named after a body control module "A", the code is set when the CEM reports a lower signal quality than the ECM accepts. The cause may therefore be a fault in the CAN network, in the ECM, or in another module on the same part of the network.
Possible causes
- Open circuit in one of the CAN cables
- Short-circuit between the CAN cables
- Internal fault in the ECM
- Internal fault in another module on the same part of the CAN network
What you can do
- 1Read all fault codes in the engine control module and remedy any CAN-related codes first.
- 2Check that the fuses are intact, and look for loose or chafed wiring in the CAN network between the CEM and the ECM.
- 3Have a workshop with diagnostic equipment read the signal from the CEM and troubleshoot the CAN network, as this requires measurement.
- 4If the code returns after these checks, erase it and test drive the car to see whether it comes back.
Symptoms you may notice1
- No noticeable symptoms for the driver
General guidance for car owners. Diagnosis on the car can point to a different cause.