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.
2001 Buick Century CustomFACTORY OEM SERVICE PROCEDURE
HVAC DTCS
HVAC DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Fault |
|---|---|
| B0332 | Ambient Outside Air Temperature Sensor Shorted To Ground |
| B0333 | Ambient Outside Air Temperature Sensor Circuit Open |
| B0337 | In-Vehicle Air Temperature Sensor Shorted To Ground |
| B0338 | In-Vehicle Air Temperature Sensor Circuit Open |
| B0348 | Sun Load Temperature Sensor Circuit Open |
| B0361 & B0363 | Left Electric Actuator Voltage High or Low |
| B0365 & B0367 | Right Electric Actuator Voltage High or Low |
| B0441 | Left Electric Actuator Shorted Or Open |
| B0446 | Right Electric Actuator Shorted Or Open |
| P0530 | A/C Refrigerant Pressure Sensor High Or Low Voltage |
| P1546 | Short Or Open In A/C Compressor Clutch Relay Circuit |
| U1255 | Serial Data (Class II) Line Open |
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.