VOLVO
ECM-U040000 - Invalid Data Received. General Failure Information. No sub type information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
3 modelsS80 (2007–), V70 (2008–), XC90 (2003–)
What does this fault code mean?
The engine control module (ECM) compares its configuration ID with the one the central electronics control module (CEM) sends out on the CAN network. The code is set when the IDs do not match, and also when communication with the CEM is or has been interrupted. Although the code is titled invalid data received, it concerns the configuration ID and the communication with the CEM.
Possible causes
- Wrong CAN configuration ID because the module is not intended for the car, for example a used module with different software or hardware
- Break in the CAN wires between the engine control module and the CEM
What you can do
- 1Read the codes in the central electronics control module and other control modules on the CAN network, and fix communication faults first
- 2Check the CAN connectors between the engine control module and the central electronics control module for oxidation and loose contacts
- 3Use a multimeter to check that the CAN wires have no break or short to ground or supply voltage
- 4Clear the code, start the engine and check whether it is stored again
- 5If the engine control module has been replaced recently: have a workshop check that it is intended for this car and has the right configuration
Symptoms you may notice4
- General warning lamp is on
- Cruise control does not work at all
- Engine jerks on throttle and sharply after engine braking
- Uneven idle
General guidance for car owners. Diagnosis on the car can point to a different cause.