U0131
Lost Communication with Power Steering Module
2003-2003 Mazda B2300 2.3L I4
High SeverityNetworkGeneric (SAE)
The 2003 Mazda B2300 is equipped with a 2.3L inline-4 engine. Below you'll find detailed u0131 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
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
- 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
U0131 on Other Vehicles
Common Questions
What does code U0131 mean on a 2003-2003 Mazda B2300?
U0131 stands for "Lost Communication with Power Steering Module". Cannot communicate with the electric power steering module.
What are the symptoms of U0131 on a Mazda B2300?
Common symptoms of U0131 include: Power steering warning light, Heavy steering, EPS light on.
What causes U0131 on a 2003-2003 Mazda B2300?
Common causes of U0131 include: EPS module failure, Wiring damage, CAN bus issue, Fuse blown.
Last updated: March 2026