U0007high severityNetwork
High Speed CAN Communication Bus (-) Low
on 2023 Chevrolet Bolt EUV 65 kWh Single Motor FWD · FWD
What this code means
The CAN Low wire voltage is lower than expected, indicating a short to ground.
Symptoms
- Bus communication degraded
- Multiple DTCs stored
- Intermittent module dropouts
Common causes
- CAN L shorted to ground
- Damaged wiring insulation
- Module fault pulling CAN L low
- Water damage
Diagnostic steps
- Measure CAN L voltage
- Isolate modules to find fault source
- Inspect wiring for ground contact
- Check for water intrusion
Repair notes
Repair the CAN L short to ground. Check for damaged wire insulation near metal brackets.
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Other Network codes on this vehicle
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0006
High Speed CAN Communication Bus (-) Open
U0008
High Speed CAN Communication Bus (-) High
U0009
High Speed CAN Communication Bus Shorted Together
U0010
Medium Speed CAN Communication Bus
U0011
Control Module Communication Bus A Low