DTC P21AB GMC

PATS Target Identifier: Signal Calculation Failure Diagnosis: There is an incorrect PCM ID stored in the RFA module. CARRY OUT a parameter reset, then CYCLE the ignition and make an attempt to start the vehicle.

PATS Target Identifier: Signal Calculation Failure Diagnosis: There is an incorrect PCM ID stored in the RFA module. CARRY OUT a parameter reset, then CYCLE the ignition and make an attempt to start the vehicle.

Description

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Video Guide

Duration: PT3M47S | Uploaded: 2020-06-20

Diagnostic Info

  • DTC Code: P21AB
  • Brand: GMC
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