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.
1996 Buick Roadmaster BaseFACTORY OEM SERVICE PROCEDURE
A/C-Heater System DTCS
A/C-HEATER SYSTEM DTCS
| OEM Code | Description |
|---|---|
| 01 | OUTSIDE AIR TEMPERATURE SENSOR CIRCUIT OPEN |
| 02 | OUTSIDE AIR TEMPERATURE SENSOR CIRCUIT SHORT |
| 03 | INSIDE AIR TEMPERATURE SENSOR CIRCUIT OPEN |
| 04 | INSIDE AIR TEMPERATURE SENSOR CIRCUIT SHORT |
| 05 | SUNLOAD SENSOR CIRCUIT OPEN |
| 06 | SUNLOAD SENSOR CIRCUIT SHORT |
| 10 | TEMPERATURE AIR MIX MOTOR CIRCUIT OPEN |
| 11 | TEMPERATURE AIR MIX MOTOR CIRCUIT SHORT |
| 26 | SERIAL DATA COMMUNICATION CIRCUIT OPEN, SHORTED TO GROUND OR SHORTED TO BATTERY VOLTAGE |
| 27 | INVALID EEPROM DETECTED |
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.