DTC 42-91

DTC 42-21, 42-81: Internal Failure of the Right Front Impact Sensor

DTC 42-91, 42-B1: Internal Failure of the Right Front Impact Sensor

1. Erase the DTC memory.
2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

Does the SRS indicator stay on, and is DTC 42-21, 42-81, 42-91, or 42-B1 indicated?

YES - Replace the right front impact sensor. If the DTC returns, replace the SRS unit.

NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures. Troubleshooting Intermittent Failures If another DTC is indicated, go to the DTC Troubleshooting Index. Diagnostic Trouble Code Descriptions