DTC Troubleshooting: B2983 (B+AUTO)

DTC B2983 or DTC indicator B and AUTO:  A Problem in the Recirculation Control Linkage, Door, or Motor

1.Clear the DTC with the HDS.

2.Turn the ignition switch OFF, and then ON (II).

3.Do the self-diagnostic with the HDS or climate control unit.

4.Check for DTCs.

Is DTC B2983, or B and AUTO indicated?


YES - Go to 5.


NO - Intermittent failure.n


5.Turn the ignition switch OFF.

6.Test the recirculation control motor.

Is the recirculation control motor OK?


YES - Substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original  climate control unit.n


NO - Replace the recirculation control motor, or repair the recirculation control linkage or door.n