VOLVO
PAM-U025200 - Lost Communication With Trailer Module (TRM). General Failure Information. No sub type information
System
Parking Assistance Module (PAM)
Volvo models this fault code applies to
Applies to the following models:
6 modelsS60 (2011–), S80 (2007–), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–)
What does this fault code mean?
The parking assistance module no longer receives replies from the towbar control module (TRM), although it communicates with it all the time. The fault lies in the control module that should send the signal, or in the CAN wires and connectors between the control modules. The parking assistance may therefore behave abnormally.
Possible causes
- The fault lies in the control module that should send the signal (sending control module)
- A break or short-circuit in the CAN wires between the control modules
- Faulty software in the control module that stored the code, after a control module was replaced without new software being loaded
What you can do
- 1Check that the fuses are intact; the fuse list in the car shows which one applies
- 2Read and clear the code, then test drive the car to see whether it comes back
- 3Think about whether any control module has been replaced in the car without new software being loaded, and tell the workshop
- 4If you have a diagnostic tool, check whether codes are stored in the towbar control module (TRM) and in the central electronic module (CEM)
- 5Check that the connectors at the parking assistance module are firmly seated and free from oxidation
- 6Have a workshop check the CAN wires and trace the control module that should send the signal
Symptoms you may notice3
- The parking assistance system does not work
- The information lamp is lit
- Message in the text display
General guidance for car owners. Diagnosis on the car can point to a different cause.