VOLVO
MMM-U220041 - Control Module Configuration Memory Corrupt. System Internal Failures. General checksum failure
System
Multi Media Module (MMM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (4)
What does this fault code mean?
The configuration memory in the multimedia module (MMM) is corrupted, so the checksum does not match. The fault lies in the module itself, and the navigation may then be unable to save locations or may lose them.
Possible causes
- Damaged multimedia module (MMM)
What you can do
- 1Erase the code and check whether it returns
- 2If the fault remains, have a workshop replace the multimedia module (MMM)
Symptoms you may notice1
- Navigation and locations cannot be saved or disappear
General guidance for car owners. Diagnosis on the car can point to a different cause.