DTC 81-4x

DTC 81-4x (81-40 to 81-49, 81-4A to 81-4F), 81-5x (81-50 to 81-59, 81-5A to 81-5F), 81-63: Internal Failure of the ODS Unit

DTC 81-64: ECU Serial ID Code Inconsistent/Internal Failure of the ODS Unit

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 81-4x, 81-5x, 81-63, or 81-64 indicated?

YES - Replace the ODS unit. 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