VOLVO
CEM-U015900 - Lost Communication With Parking assistance module. General Failure Information. No sub type information
System
Central Electronic Module (CEM)
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:
7 modelsS60 (2011–), S80 (2007–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
What does this fault code mean?
The fault code means that the control module storing the fault does not get a working link to the parking assistance module (PAM), or the link is disturbed. The parking assistance can then stop working, and a warning may appear in the display. The fault concerns communication in the network.
Possible causes
- Missing power supply to the parking assistance module (PAM)
- Broken ground wire to the PAM
- Poor contact in the connections
- Open or shorted CAN wiring
- A module not intended for the car, such as a used unit with other software or hardware
What you can do
- 1Confirm the parking assistance fuse in the rear relay and fuse centre is intact
- 2Check the connections in the rear relay and fuse centre and at the PAM for contact resistance, oxidation and damage
- 3Check the power wire between the rear relay and fuse centre and the PAM for breaks and shorts to ground
- 4Check the ground wire and ground point for breaks, play and oxidation. If the fault remains, have a workshop check the CAN wiring
Symptoms you may notice2
- Parking assistance system does not work
- Yellow symbol and text message in the display
General guidance for car owners. Diagnosis on the car can point to a different cause.