U0151critical severityNetwork
Lost Communication with Restraint Control Module
on 2003 Mazda B2300 2.3L I4 · FWD
What this code means
Cannot communicate with the airbag/SRS control module.
Symptoms
- Airbag light on
- Seatbelt pretensioners disabled
- No airbag protection
Common causes
- SRS module power failure
- CAN bus issue
- Module failure
- Fuse blown
Diagnostic steps
- Check SRS fuse
- Test module power
- Check CAN wiring
Repair notes
Safety critical. Check fuses. Professional service recommended.
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