2002 Pontiac Aztek FWDFACTORY OEM SERVICE PROCEDURE

Diagnostic Trouble Code Definitions

DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC (1) Description
B1327Β  Device Power Circuit Low
B1328Β  Device Power Circuit High
B1507Β  High Power Control Circuit Low
B1508Β  High Power Control Circuit High
P0560Β  System Voltage
P0620Β  Generator Turn On Signal Circuit Low
(1) Codes listed in this table are only for testing covered in this article. For complete DTC listing, see BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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