U0401
Invalid Data Received from ECM/PCM
2014-2014 Cadillac SRX 3.0L V6
Moderate SeverityNetworkGeneric (SAE)
The 2014 Cadillac SRX is equipped with a 3.0L V6 engine. Below you'll find detailed u0401 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
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 2014-2014 Cadillac SRX?
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 Cadillac SRX?
Common symptoms of U0401 include: Various warning lights, Erratic system behavior.
What causes U0401 on a 2014-2014 Cadillac SRX?
Common causes of U0401 include: PCM software issue, CAN bus noise, PCM failure, Wiring interference.
Last updated: March 2026