VOLVO
REM-4F49 - Parking sensor 8. Faulty signal
System
Rear Electronic Module (REM)
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 rear electronic module (REM) has been told by the parking assistance module that the signal from parking sensor 8 is faulty. The sensors sit in the bumpers and measure the distance to obstacles using ultrasound.
Possible causes
- Sensor signal wire shorted to supply voltage or ground
- Sensor supply shorted to ground
- Sensor ground wire shorted to supply voltage
- Damaged sensor, for example after an impact
What you can do
- 1Check that the parking sensors in the bumper are secure and intact
- 2Find out whether the bumper has recently been damaged, replaced or painted
- 3Inspect the wiring and connectors behind the bumper for damage and moisture
- 4If the fault remains, have the sensor and wiring checked by a workshop
Symptoms you may notice2
- Parking assistance does not work
- Message in the display
General guidance for car owners. Diagnosis on the car can point to a different cause.