U3001high severityNetwork
ECM/PCM Software Version Mismatch
on 2001 Audi A6 3.0L V6 · AWD
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
00003
Control Module - Defective
01304
Radio - No Communication
01312
Powertrain Data Bus - Defective
01314
Engine Control Module (ECM) - no communications
01315
Transmission Control Module (TCM) - No Communication
01316
ABS Control Module - No Communication
01317
Instrument Cluster Control Module (J285) - No Communication
01318
Immobilizer Control Module - No Communication
01321
Airbag Control Module - No Communication
U0001
High Speed CAN Communication Bus