B2127

DTC B2127: Steering angle sensor malfunction

NOTE: Before troubleshooting, check the VSA system DTCs. If the VSA system is OK, do this troubleshooting.

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Check for DTCs with the HDS.

Is DTC B2127 indicated?

YES - Go to step 4.

NO - Intermittent failure, the adaptive front lighting system is OK at this time. Check for loose or poor connections at the steering angle sensor connector and at the adaptive front lighting control unit connector.

4. Turn the ignition switch OFF.
5. Substitute a known-good adaptive front lighting control unit, and do the adaptive front lighting control unit learning procedure.
6. Turn the ignition switch ON (II).
7. Check for DTCs with the HDS.

Is DTC B2127 indicated?

YES - Go to the gauge control module input test. Gauge Control Module Input Test

NO - Faulty original adaptive front lighting control unit, replace it and do the adaptive front lighting control unit learning procedure.