2004 Pontiac Aztek Base, FWDFACTORY OEM SERVICE PROCEDURE

Instrument Panel DTCS

INSTRUMENT PANEL DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description
DTC B1369 Device Ignition 0 (UNLOCK, ON, and START) Circuit Open
DTC B2823 or B3574 Trip Odometer Reset Switch Circuit Low Or Trip Odometer A or B (trip odometer 1 or 2) Select Switch Circuit Low
DTC B2838, B3564, B3569, or B3752 Driver Information Center (DIC) Reset Switch Circuit
DTC B2961 Key In Ignition Circuit
DTC P0461 Fuel Level Sensor Performance
DTC P0462 (LA1) Fuel Level Sensor Circuit Low Voltage
DTC P0462 (LY7) Fuel Level Sensor Circuit Low Voltage
DTC P0463 (LA1) Fuel Level Sensor Circuit High Voltage
DTC P0463 (LY7) Fuel Level Sensor Circuit High Voltage
DTC P0520 Engine Oil Pressure (EOP) Switch Circuit
DTC P0521 No Change In The EOP With Change In RPM
DTC P0522 EOP Sensor Signal Circuit Voltage Low
DTC P0523 EOP Sensor Signal Circuit Voltage High
DTC P2066 Fuel Level Sensor 2 Performance
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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