What does fault code UEM-0041 mean?

Diagnostic fault code details for UEM-0041 (Volvo S60 (2001–2009), Volvo S80 (1999–2006), Volvo V70 (2000–2008)). Repair service at OBD Tuning.

VOLVO

UEM-0041 - Control unit. Internal fault

System

Upper Electronic Module (UEM)

Volvo models this fault code applies to

Applies to the following models:

5 models

S60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)

Show models by year and engine (5)

What does this fault code mean?

The upper electronic module (UEM) tries to save data to its memory, but the data is corrupted. The code is set at that point, and the cause is a fault in the module's EEPROM memory chip. The fault affects the interior lighting and the alarm, among other things.

Possible causes

Fault in the EEPROM memory

What you can do

1Check whether the interior lighting and the alarm are still faulty.
2Read off the code, clear it and check whether it returns.
3Check that the fuses for the interior lighting and the alarm are intact.
4If the fault remains, have a workshop read out the stored data if possible, and replace the upper electronic module.

Symptoms you may notice2

The interior lighting does not work
The alarm does not work

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