DTC Troubleshooting: 41-21, 42-21, 43-21, 44-21

DTC 41-21:  Right-front Wheel Lock
DTC 43-21:  Right-rear Wheel Lock

The DTCs may indicated under these conditions:
  • The vehicle goes into a spin.
  • The ABS or VSA continues to operate for a long time.
  • Snow build-up on the wheel sensor.
  • Misadjusted brake switch.
  • Contaminated brake fluid.

1.Raise the vehicle, and support it with safety stands in the proper locations.

2.Turn the appropriate wheel by hand.

DTC Appropriate Wheel 
41-21 Right-front 
42-21 Left-front 
43-21 Right-rear 
44-21 Left-rear 

Is there the brake drag?

YES - Repair the brake drag.n

NO - Go to 3.

3.Check the appropriate wheel sensor is properly mounted.

Is the wheel sensor installation OK?

YES - Intermittent failure, the system is OK at this time. Check for loose terminals between the wheel sensor 2P connector and the VSA modulator-control unit 37P connector. Refer to intermittent failures troubleshooting.n

NO - Reinstall the wheel sensor, and check the mounting position.n