VOLVO
SRS-U000188 - High Speed CAN Communication Bus. Bus Signal / Message Failures. Bus off
System
Supplemental Restraint System (SRS)
Volvo models this fault code applies to
Applies to the following models:
2 modelsV40 (2013–), V40 Cross Country (2013–)
Show models by year and engine (2)
What does this fault code mean?
The airbag control module has received or sent incorrect messages on the high speed CAN network, and has shut itself off (bus-off). The fault is caused by an open-circuit in one or both CAN wires in part of the network.
Possible causes
- Open-circuit in one or both CAN wires in part of the network
What you can do
- 1Read out all fault codes in the car and start with those relating to communication faults
- 2Have a workshop measure the resistance of the CAN wiring and check for open-circuits in the part of the network where the fault may be
- 3Have a workshop check connectors and wiring along that route and repair any damage
- 4After a repair, erase the code and see whether it returns
- 5Do not work on the airbag system yourself; have a workshop carry out all wiring and control module checks
Symptoms you may notice2
- Text message in the display
- The SRS warning light comes on or behaves abnormally
What the fault can affect2
- The control module shuts itself off ("bus-off")
- It stays off until the power supply is broken; when power is reconnected it tries to communicate again
General guidance for car owners. Diagnosis on the car can point to a different cause.