U0401
Invalid Data Received from ECM/PCM
2002-2007 Buick Rendezvous 3.5L V6
Moderate SeverityNetworkGeneric (SAE)
Description
The data received from the PCM is invalid or corrupted.
Symptoms
- Various warning lights
- Erratic system behavior
Common Causes
- PCM software issue
- CAN bus noise
- PCM failure
- Wiring interference
Diagnostic Steps
- Update PCM software
- Check for TSBs
- Test CAN bus signal quality
- Check for electromagnetic interference
Repair Notes
Reprogram PCM. Check CAN bus.
Related Codes
Other Network Codes
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0006High Speed CAN Communication Bus (-) Open
- U0007High Speed CAN Communication Bus (-) Low
- U0008High Speed CAN Communication Bus (-) High
- U0009High Speed CAN Communication Bus Shorted Together
- U0010Medium Speed CAN Communication Bus
U0401 on Other Vehicles
Common Questions
What does code U0401 mean on a 2002-2007 Buick Rendezvous?
U0401 stands for "Invalid Data Received from ECM/PCM". The data received from the PCM is invalid or corrupted.
What are the symptoms of U0401 on a Buick Rendezvous?
Common symptoms of U0401 include: Various warning lights, Erratic system behavior.
What causes U0401 on a 2002-2007 Buick Rendezvous?
Common causes of U0401 include: PCM software issue, CAN bus noise, PCM failure, Wiring interference.