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.
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HOMESERVICE MANUALSPONTIAC1994FIREBIRD TRANS AM GT, 2D COUPEREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - TESTS W/CODES - 5.7LECM/PCM CODE CHARTSCODE 65, RIGHT OXYGEN (O2) SENSOR RICH
1994 Pontiac Firebird Trans Am GT, 2D Coupe
Code 65, Right Oxygen (O2) Sensor Rich
1994 Pontiac Firebird Trans Am GT, 2D CoupeSECTION Code 65, Right Oxygen (O2) Sensor Rich
See Code 45 chart and duplicate procedure for right O2 sensor as necessary.
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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.