VOLVO
ECM-U041862 - Invalid Data Received From Brake System Control Module. Algorithm Based Failures. Signal compare failure
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
2 modelsXC60 (2009–), XC90 (2003–)
Show models by year and engine (2)
What does this fault code mean?
The engine control module (ECM) has received an invalid request for extra torque from the brake control module (BCM). When the BCM detects that the driven wheels are slipping, it asks for more torque, and the ECM checks the conditions before raising torque. Although the fault is named a signal compare failure, the code is set when the request for extra wheel torque is unreasonable in time. The ECM code is stored after the BCM has stored its own fault.
Possible causes
- The fault is in the brake control module (BCM)
What you can do
- 1Read the fault codes in the brake control module (BCM) first and remedy them. This code cannot be erased until the BCM fault has been remedied and erased.
- 2Then erase the fault codes and check on a test drive whether the code returns.
- 3Do not work on the brake system yourself. Have a workshop check the BCM if the code returns.
Symptoms you may notice1
- Warning symbol and message in the display
General guidance for car owners. Diagnosis on the car can point to a different cause.