VOLVO
UEM-0093 - Seat belt reminder. Faulty signal
System
Upper Electronic Module (UEM)
Volvo models this fault code applies to
Applies to the following models:
5 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
What does this fault code mean?
The UEM gets its instruction over the CAN network about the seat belt reminder lamp: lit or not. The code is set when the lamp should be lit but the feedback shows that it is shorted to ground or that the supply to the lamp is broken. The cause is a defective UEM.
Possible causes
- The upper electronic module (UEM) is defective, with an internal fault
What you can do
- 1Switch the ignition on and check whether the seat belt reminder lamp lights.
- 2Read off the code, clear it and check whether it returns.
- 3Check that nothing points to a fault in the supply to the upper electronic module.
- 4If the fault remains, have a workshop read out the programmed data if possible and replace the upper electronic module.
Symptoms you may notice1
- The seat belt reminder lamp does not light
General guidance for car owners. Diagnosis on the car can point to a different cause.