U0151

Lost Communication With Restraints Control Module

Airbag / SRS network Generic OBD-II High

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.

High

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.

Real-world scan data

Seen in

3,934

scans in the past year

Found in

0.6%

of scans

1.1%

of scans that found faults

Appears alongside · share of U0151 scans

U0100in 57.5% of scans

U0121in 44.5% of scans

C1057in 34.7% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

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?+

The car drives normally, but the airbags and seatbelt pretensioners may not deploy in a collision. That is a serious safety risk, so get it fixed as soon as possible.

Can I just clear U0151?+

No. The SRS light will stay on until the module communicates again, and clearing it does not restore airbag protection. The fault must be repaired.

Read & clear U0151 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX