Network
generic / SAE
U0016
Medium Speed CAN Communication Bus Off
A controller on the medium-speed comfort bus has shut its transceiver off after too many consecutive transmit errors. Comfort and body functions stop responding until the bus recovers or is repaired.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number– / 16
Possible causes
- Wiring short forces bus-off state high
- One failing node corrupts traffic medium
- Gateway module routing CAN messages incorrectly low
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 80–700 €
- Estimated time: 1–5 h
- Component: body control module
- Component: can bus wiring
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012
iso:11898