Lost Communication With Restraints Control Module
What it means
U0151 means the network has lost communication with the restraints control module — the airbag (SRS) computer. When it drops offline, the airbag warning light comes on and the system may be disabled, so airbags and seatbelt pretensioners may not deploy in a crash. The engine runs normally, but this is a safety-critical fault usually caused by a power/ground issue, damaged wiring or a connector, a bus fault, or a failed module.
Can I keep driving? Mechanically driveable, but the airbag/SRS system is likely disabled and may not deploy in a crash — treat this as safety-critical and fix it promptly.
Common symptoms
What you'll notice
- Airbag/SRS warning light on
- SRS system disabled
- Restraints control module unresponsive when scanned
- No effect on how the engine runs
Common causes
Most likely first
- Poor power or ground to the restraints control moduleLikely
- Wiring or connector fault at the module (often under the seat or console)Common
- CAN bus fault interrupting the moduleCommon
- Failed restraints control moduleLess often
How to diagnose & fix
Work through it in order
- Scan the SRS module for related codes, following proper airbag safety precautions.
- Inspect the module's power, ground, and connectors.
- Check bus communication to the module.
- Repair the wiring or replace the module — SRS work often needs a professional.
- Clear codes and verify the airbag warning light goes out.
FAQ
Quick answers
Is it safe to drive with U0151?+
Can I just clear U0151?+
Related codes
Often seen with U0151
Read & clear U0151 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.