U3001high severityNetwork
ECM/PCM Software Version Mismatch
on 2023 Chevrolet Bolt EUV 65 kWh Single Motor FWD · FWD
What this code means
The ECM/PCM software does not match the expected version for the vehicle configuration and other installed modules.
Symptoms
- Check Engine Light
- Driveability issues
- Other modules reporting ECM incompatibility
- System features not working correctly
Common causes
- ECM not updated during recall
- Wrong calibration applied
- Partial powertrain update
- ECM replaced with wrong software version
Diagnostic steps
- Check ECM software calibration ID
- Compare to required version for vehicle VIN
- Flash ECM with correct calibration
- Update TCM if required for compatibility
- Verify drive cycle completion after update
Repair notes
Update ECM/PCM to correct calibration. TCM may also need updating for compatibility.
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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
U0007
High Speed CAN Communication Bus (-) Low
U0008
High Speed CAN Communication Bus (-) High
U0009
High Speed CAN Communication Bus Shorted Together
U0010
Medium Speed CAN Communication Bus