OBD Guide

U0151

Lost Communication With Restraints Control Module

Severity: HIGH

Symptoms

  • The airbag light on the dashboard is on
  • Airbags may not deploy in a crash
  • Lack of communication with the module in diagnostic equipment
  • There may be problems with seat belt pretensioners

Causes

  • Open or short circuit in the communication circuit
  • Airbag module power supply problems
  • Malfunction of the airbag module itself
  • Wiring harness damage
  • Corrosion of connectors

How to Fix

  1. Check fuses associated with the airbag system
  2. Inspect the airbag module connectors and wiring
  3. Check the power supply and ground of the module
  4. Scan the airbag module for additional error codes
  5. Repair only from an authorized dealer

Related codes