DTC B2-81
DTC B2-21, B2-81, B2-91, B2-B1: Internal Failure of the Rear Safing Sensor1. 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 B2-21, B2-81, B2-91, or B2-B1 indicated?
YES - Replace the rear safing 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