VOLVO
DIM-U000188 - High Speed CAN Communication Bus. Bus Signal / Message Failures. Bus off
System
Driver Information Module (DIM)
Volvo models this fault code applies to
Applies to the following models:
9 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (10)
What does this fault code mean?
The instrument has switched off its communication on the high-speed CAN network (HS-CAN), a state known as bus off. It happens when another control module disturbs the network, or when the instrument's own messages cause disturbance. The instrument lighting and dimmer then do not work.
Possible causes
- Short circuit between the CAN wires
- Open circuit in one of the CAN wires
- Disturbance from another control module on the same part of the network
- Damaged instrument panel module (DIM)
What you can do
- 1Read off the fault codes, note them and clear them. Test drive the vehicle to see if the fault returns
- 2Check that the fuses are intact and that the battery is in good condition
- 3Follow the CAN wiring for chafing and pinched areas, and check that the connectors are firmly seated and free from oxidation
- 4If you have a diagnostic tool, read which control modules respond on the CAN network and note whether any are missing
- 5If the fault returns, have a workshop carry out a CAN fault-finding procedure, as it requires measurements in the wiring
Symptoms you may notice1
- The instrument lighting and dimmer do not work
What the fault can affect1
- The instrument switches itself off and stays off until the power supply to it has been broken
General guidance for car owners. Diagnosis on the car can point to a different cause.