What does fault code CCM-U300041 mean?

Diagnostic fault code details for CCM-U300041 (Volvo S60 (2011–), Volvo S80 (2007–), Volvo V40 (2013–)). Repair service at OBD Tuning.

VOLVO

CCM-U300041 - Control Module. System Internal Failures. General checksum failure

System

Climate Control Module (CCM)

Volvo models this fault code applies to

Applies to the following models:

9 models

S60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)

Show models by year and engine (9)

What does this fault code mean?

The climate control module (CCM) has received a message on the CAN network that does not match the expected message. The fault is caused by interference in the communication. Your climate settings may then be lost.

Possible causes

Communication interference

What you can do

1Clear the code and road test the car to see whether it returns
2Check that the battery is charged and that the battery terminals are clean
3Check that the fuses are intact
4If you have a diagnostic tool, read the fault codes in all control modules and see whether more of them show communication faults
5If the fault returns, have a workshop troubleshoot the CAN network

Symptoms you may notice2

Your climate settings are lost
The memory function for climate settings does not work

General guidance for car owners. Diagnosis on the car can point to a different cause.