U0131high severityNetwork
Lost Communication with Power Steering Module
on 2003 Cadillac CTS 3.2L V6 · RWD
What this code means
Cannot communicate with the electric power steering module.
Symptoms
- Power steering warning light
- Heavy steering
- EPS light on
Common causes
- EPS module failure
- Wiring damage
- CAN bus issue
- Fuse blown
Diagnostic steps
- Check EPS fuse
- Test module power
- Check CAN wiring
- Test EPS motor
Repair notes
Check fuse and power supply. EPS module replacement is common.
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