VOLVO
PAC-U003788 - Vehicle Communication Bus B. Bus Signal / Message Failures. Bus off
System
Powertrain (Engine & Gearbox)
Volvo models this fault code applies to
Applies to the following models:
8 modelsS60 (2011–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
What does this fault code mean?
The parking assistance camera module (PAC) has a configuration ID that does not match the one the central electronic module (CEM) sends out on the CAN network. The fault is set while the control module has power. A configuration ID that does not suit the car, for example from a used control module with different software or hardware, can cause the fault. The parking camera does not work while the fault remains.
Possible causes
- Incorrect configuration ID, because the control module does not match this car, such as a second-hand unit with other software or hardware
What you can do
- 1Has the parking camera been swapped for a used one? Tell the workshop, since it then needs to be configured for the car
- 2Erase the fault code and test drive the car to see whether it comes back
- 3Have a workshop read out the fault codes in the other control modules and check the CAN wires between PAC and CEM if needed
- 4Have a workshop reprogram the parking assistance camera module (PAC) with the latest software
Symptoms you may notice1
- The parking camera does not work
General guidance for car owners. Diagnosis on the car can point to a different cause.