U3003moderate severityNetwork
Control Module Calibration Not Complete
on 2023 Chevrolet Bolt EUV 65 kWh Single Motor FWD · FWD
What this code means
A module calibration or initialization procedure has not been completed after programming or replacement.
Symptoms
- Module in default mode
- System not performing optimally
- Calibration warning message
- Adaptive values not learned
Common causes
- Programming completed but calibration skipped
- Calibration drive cycle not completed
- Battery disconnected during calibration
- Calibration procedure interrupted
Diagnostic steps
- Perform required calibration procedure
- Complete calibration drive cycle
- Run module-specific initialization
- Verify calibration parameters stored
- Perform post-calibration verification test
Repair notes
Complete the required calibration procedure. Some calibrations require specific driving conditions.
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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