Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2002 Pontiac Aztek AWDFACTORY OEM SERVICE PROCEDURE
Lighting DTCS
LIGHTING DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B1354 | Open In Controlled Ground Circuit |
| DTC B1397 | Short To Ground Or Open In Dimming Reference Voltage Circuit |
| DTC B1398 | Short To Battery Positive Voltage In Dimming Reference Voltage Circuit |
| DTC B1482 | Instrument Panel Lamps Supply Circuit Or Courtesy Lamp Supply Circuit Voltage Low |
| DTC B2532 | Fog Lamp Relay Control Circuit Short To Ground Or Open |
| DTC B2533 | Fog Lamps Relay Control Circuit Short To Battery Positive Voltage |
| DTC B2552 | False Codes as per TSB PIC3086: check backup lamp control circuit low Do not replace the BCM if any of these DTCs are history and/or not related to the customer complaint. Tech 2 and SI are being updated to add descriptions of the codes and instructions for repair |
| DTC B2553 | False Codes as per TSB PIC3086: check backup lamp control circuit high Do not replace the BCM if any of these DTCs are history and/or not related to the customer complaint. Tech 2 and SI are being updated to add descriptions of the codes and instructions for repair |
| DTC B2577 | Short To Ground Or Open In Control Circuit Of Headlamp Relay Coil Or Low Beam Headlamp Relay |
| DTC B2578 | Short To Voltage In Headlamp Relay Control Circuit Or Low Beam Headlamp Relay Control Circuit |
| DTC B2587 | Park Lamp Relay Coil Control Circuit Short To Ground Or An Open |
| DTC B2588 | Control Circuit Of Park Lamp Relay Short To Battery Positive Voltage |
| DTC B2602 | DRL Relay Coil Control Circuit Short To Ground Or An Open |
| DTC B2603 | DRL Relay Coil Control Circuit Short To Battery Positive Voltage |
| DTC B2613 | Short To Voltage In Reference Circuit Or open In Dimming Circuit Low Reference |
| DTC B2617 | Courtesy Lamps Supply Voltage Circuit Short To Ground |
| DTC B2618 | Courtesy Lamps Supply Voltage Circuit Of The Interior Lamps Short To Voltage |
| DTC B2627 | Instrument Panel Lamps Supply Voltage Circuit Or Courtesy Lamp Supply Voltage Circuit Low |
| DTC B2628 | Instrument Panel Lamps Supply Voltage Circuit Short To Voltage |
| DTC B2645 | Short To Battery Positive Voltage In Ambient Light Sensor Reference Voltage Circuit |
| DTC B2647 | DRL Signal Short To Ground/Voltage Or Low Reference Circuit Short To Ground |
| DTC B2648 | Short To Voltage Or An Open Drl Ambient Light Sensor Low Reference Circuit, Or Open In Ambient Light Sensor Signal Circuit |
| DTC B2665 | Headlamps Signal Circuit Short To Ground |
| DTC B2742 | Fog Lamp Switch Signal Circuit Short To Ground |
| DTC B3840 | Open Or A Short To Ground In Park Lamp Supply Voltage Circuit |
| DTC B3841 | Short To Voltage In Park Lamp Supply Voltage Circuit |
| DTC B3857 | Short To Voltage, Short To Ground Or An Open In High Beam Headlamp Signal Circuit |
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:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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