Network
generic / SAE
U0293
Lost Communication with Hybrid Vehicle Control System
The hybrid vehicle network has lost the hybrid control unit (HCU). The vehicle drops out of hybrid operation, often forced into a fail-safe mode that limits torque.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number2 / 93
Possible causes
- HCU unpowered high
- HV interlock loop opened 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: 200–3000 €
- Estimated time: 1–8 h
- Component: hybrid control unit
- Component: can bus wiring
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012