81 (1993-1994 Vehicles) ABS Message Fault

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The PCM receives massages from the ABS controller to activate the traction control system. When messages are not transmitted properly between the ABS controller and PCM, a DTC 81 will set.

Code Parameters

DTC 51 will set if:

  • No message received from the ABS controller.
  • A certain number of incorrect messages have been sent to the PCM.

Diagnostic Aids

  • Check the tightness of the female terminal grip with a spare male terminal.
  • If DTC 51 is set traction control will be disabled.