U0151: Lost Communication With Restraints Control Module
Another module has stopped receiving messages from the airbag (restraints) control module.
High risk
Have it checked promptly. The airbags may not work.
Short answer · Can I keep driving with U0151?
The car drives normally, but the airbag system may not protect you in a crash. Have it checked as soon as possible.
What does U0151 mean?
U0151 is stored, often by the instrument cluster, when messages from the restraints control module stop arriving.
What the car does when the code is set
The airbag warning light comes on. While the airbag control module cannot communicate, the airbag system may not work.
How the system works
The restraints (airbag) control module monitors crash sensors and controls airbags and belt pretensioners. It reports its status to the instrument cluster and other modules over the network.
Common symptoms
Possible causes
Listed without ranking. The cause on your car depends on make, engine and mileage — see the maker notes below.
- Power or ground fault at the airbag moduleA blown fuse or poor ground.
- Connector problem under the seat or consoleAirbag module connectors are often near the floor.
- Network wiring faultDamaged or corroded wires.
- Low battery voltageVoltage drops can cause temporary communication loss.
- Failed airbag control moduleFor example after a collision or water damage.
How it is diagnosed
- Treat the airbag light seriouslyIf the airbag warning light is on, the airbags may not deploy in a crash.
- Check battery voltage and fusesStart with the simplest causes.
- Leave airbag work to a workshopDiagnosis and repair of airbag systems should be done by trained technicians.Never probe airbag connectors or modules yourself. Accidental deployment can cause injury.
Questions about U0151
Is the airbag light always on with U0151?
Usually, yes.
Will the airbags work with this code?
They may not. Have the system checked as soon as possible.