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 MANUALSHYUNDAI2002ACCENT GL, AUTOMATICREPAIR AND DIAGNOSISGENERAL INFORMATIONCOMPUTER RELEARN PROCEDURES - IMPORTHONDASYSTEM READINESS TEST CODESHO2S MONITOR
2002 Hyundai Accent GL, Automatic
HO2S Monitor
2002 Hyundai Accent GL, AutomaticSECTION HO2S Monitor
NOTE:
Do not turn ignition off. When negative battery cable is disconnected, all readiness test codes are cleared. Ensure ambient temperature is 20-95°F (-7-35°C).
- Connect scan tool to DLC. Start engine, and hold at 3000 RPM under no load condition with transaxle in Park or Neutral until radiator cooling fan comes on. Let engine idle for 5 seconds.
- Drive vehicle at a steady speed between 50-62 MPH with transaxle in D4 position for about 2 minutes.
- With transaxle in D4 position, decelerate from 62 MPH by completely releasing throttle for at least 5 seconds. If engine is stopped, go back to step 2 and start over. Check for readiness code with scan tool.
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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.