VOLVO
REM-8D13 - Stop lamp. Signal too high / Signal missing
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:
1 modelS80 (1999–2006)
Show models by year and engine (1)
What does this fault code mean?
The module (REM) keeps watch on what it sends to the LED stop lamps. The fault code is stored if it registers too high a signal or a break in that wiring, and the stop lamp then either stays off or stays on all the time.
Possible causes
- Break in the wiring to the stop lamps
- Wiring to the stop lamps has a short to supply voltage
- Defective stop lamp
What you can do
- 1Check the connectors at the rear electronic module and at the tail lamps for contact resistance, oxidation and looseness, and look carefully for damage
- 2With the ignition off, use a multimeter to check that the wiring to the stop lamp has neither a break nor contact with supply voltage
- 3If no fault is found, try a new stop lamp
- 4If the fault remains, have a workshop with diagnostic equipment investigate the wiring and the control module
Symptoms you may notice2
- The stop lamps do not light when the brake pedal is pressed
- The stop lamp stays lit all the time
General guidance for car owners. Diagnosis on the car can point to a different cause.