VOLVO
REM-8C23 - Relay, rear fog lamp. Signal missing. Permanent fault
System
Rear Electronic Module (REM)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
Applies to the following models:
3 modelsV70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (3)
What does this fault code mean?
The fault is permanent. The rear electronic module (REM) has registered an open circuit from the status flag while the rear fog lamp relay is not being activated. The control to the relay is broken or the relay is not fitted, so the rear fog lamp does not work.
Possible causes
- Break in the control to the rear fog lamp relay
- The rear fog lamp relay is not fitted
What you can do
- 1Check that the rear fog lamp relay is correctly fitted, and correct it if needed
- 2With the ignition on, press the rear fog lamp switch on and off a few times and see whether the fog lamps come on
- 3If the fault remains, have a workshop replace or investigate the relay and wiring with diagnostic equipment
Symptoms you may notice1
- The rear fog lamp does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.