VOLVO
REM-6F56 - Locking relay, central locking, tailgate. Signal too low. Intermittent fault
System
Rear Electronic Module (REM)
Volvo models this fault code applies to
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 intermittent, meaning it is sporadic and may not be present right now. The rear electronic module (REM) has registered too low a signal across the relay coil for the tailgate locking relay when it is activated. The relay may be missing or loose, or the coil may have a break or be shorted to ground, and the tailgate then does not lock.
Possible causes
- The relay is not fitted
- Open circuit in the relay coil
- The relay coil is shorted to ground
What you can do
- 1Check that the tailgate central-locking relay is fitted and firmly in place
- 2Check the relay contacts in the socket for oxidation and loose connections
- 3Use a multimeter to check whether the wire to the relay coil has a break or contact with ground
- 4If the fault remains, have a workshop with diagnostic equipment check the relay and the wiring
Symptoms you may notice1
- The tailgate does not lock or unlock
General guidance for car owners. Diagnosis on the car can point to a different cause.