Network
generic / SAE
U0007
High Speed CAN Communication Bus (-) Low
The CAN-Low line is shorted to ground or held below its valid recessive level. The differential pair cannot transmit data and the bus is effectively dead.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number– / 07
Possible causes
- CAN-Low shorted to ground high
- Failed transceiver on one module 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: can low wire
- Component: can transceiver
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012
iso:11898