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.
1992 Acura Legend Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Code 1 Or 2: O2 Sensor
- Turn ignition off. Remove fuse No. 15 (ACG) in underdash fuse box for 10 seconds to reset ECU. Start and warm engine until cooling fan comes on.
- Road test vehicle. Place manual transmission in fourth gear (A/T in 2nd). With engine speed at 1200 RPM, accelerate at wide open throttle for at least 5 seconds, and then decelerate with throttle fully closed for at least 5 seconds.
- Check ECU for fault codes. See RETRIEVING CODES . If no codes are present, problem is intermittent. Check for poor connections at O2 sensor and ECU connector. If Code 1 and/or 2 are present, go to CODE 43 OR 44: FUEL SUPPLY SYSTEM .
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.
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