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.
2003 Saturn LW200FACTORY OEM SERVICE PROCEDURE
HVAC, Automatic DTCS
HVAC - AUTOMATIC DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B0130 | Actuator |
| DTC B0160, B0161, B0165, or B0166 | Ambient Air Temperature Sensor Signal Circuit |
| DTC B0185 or B0186 | Ambient Light Sensor Circuit Voltage |
| DTC B0413 | Air Temperature Actuator 5 Volt Reference Circuit Shorted To Ground, Voltage Or Open |
| DTC P0530, P0532, or P0533 (PCM, L61) | A/C Pressure |
| DTC P0645, P0646, or P0647 (ECM, L81) | A/C Compressor Clutch Relay Control Circuit |
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.