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 Buick Century CustomFACTORY OEM SERVICE PROCEDURE
Lighting DTCS
LIGHTING DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B1482 | BCM Commanded State Does Not Match The Feedback |
| DTC B2533 | Fog Lamp Enable Circuit Active With Short To Battery Voltage |
| DTC B2552 (Regal Only) | Backup Lamp Relay Control Circuit Short To Ground Or Open |
| DTC B2553 (Regal Only) | Short To Battery In Backup Lamp Relay Control Circuit |
| DTC B2559 | Courtesy Lamp Ground Circuit |
| DTC B2577 | Short To Ground Or Open In Headlamp Relay Control Circuit |
| DTC B2578 | Short To Battery In Headlamp Relay Control Circuit |
| DTC B2587 | Short To Ground Or Open In Park Lamp Relay Control Circuit |
| DTC B2588 | Short To Battery In Park Lamp Relay Control Circuit |
| DTC B2603 | Short To Battery In LF Turn Signal Lamp Supply Voltage/Signal Circuit |
| DTC B2608 | Short To Battery In RF Turn Signal Lamp Supply Voltage/Signal Circuit |
| DTC B2617 | Courtesy Lamp Low Control Circuit Low |
| DTC B2618 | Courtesy Lamp Low Control Circuit High |
| DTC B2647 | Short To Ground In DRL Ambient Light Sensor Signal Circuit |
| DTC B2648 | Ambient Light Sensor Signal Circuit Open Or Shorted To Voltage |
Factory Service Tools
Use the Manual With the Right Hardware
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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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