Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Buick >> 2018 >> Regal Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 63 (Immobilizer System) >> Diagnostic Information and Procedures >> DTC P162B >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2020 Buick Regal TourX, 2020 Buick Regal, 2019 Buick Regal TourX, and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify the vehicle is equipped with OnStar (RPO UE1) and DTC P162B is set
    • If the vehicle is not equipped with OnStar (RPO UE1) and DTC P162B is set 

      Replace the ECM.

    • Go to next step: If the vehicle is equipped with OnStar (RPO UE1) and DTC P162B is set 
  2. Perform the Remote Vehicle Speed Limiting Reset procedure with the scan tool.
  3. Verify DTC P162B is not set.
    • If DTC P162B is set 
    1. Reprogram the ECM. Refer to Control Module References .
    2. Verify the DTC does not set while operating the vehicle within the Conditions for Running the DTC.
      • If the DTC sets, replace the ECM. If the DTC continues to set after ECM replacement, replace the vehicle communication interface module.
      • Go to next step: If the DTC does not set
    3. All OK.
    • Go to next step: If DTC P162B is not set 
  4. All OK.
scientia non olet · About Mike's Workshop Manuals