VOLVO
REM-4F44 - Parking sensor 3. Faulty signal
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:
5 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
What does this fault code mean?
Parking sensor 3 is the source of a faulty signal that the parking assistance module (PAM) reads. The code is set when that happens, and parking assistance no longer works, which may show as a message in the display.
Possible causes
- Signal wire between the PAM and parking sensor 3 shorted to supply voltage or ground
- Power supply wire to parking sensor 3 shorted to ground
- Ground wire to parking sensor 3 shorted to supply voltage
What you can do
- 1Clear the fault code and test drive the car; if it shows up again, a fault remains
- 2Use a multimeter to check that the signal wire to parking sensor 3 has no contact with supply voltage or ground when the ignition is off
- 3Use a multimeter to check that the power supply wire to parking sensor 3 is not shorted to ground
- 4Use a multimeter to check that the ground wire to parking sensor 3 is not shorted to supply voltage
- 5If no fault is found, have a workshop replace parking sensor 3
Symptoms you may notice2
- The parking assistance system has no function
- The text display shows a message
General guidance for car owners. Diagnosis on the car can point to a different cause.