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 MANUALSMAZDA20105 SPORT, 2.3 L, STANDARDREPAIR AND DIAGNOSISGENERAL INFORMATIONOBD-II DRIVE CYCLESDRIVE CYCLES2003: MAZDA6OBD-II DRIVE MODESMODE 3 - HO2S HEATER, HO2S & TWC REPAIR VERIFICATION DRIVE MODE
2010 Mazda 5 Sport, 2.3 L, Standard
Mode 3 - HO2S Heater, HO2S & TWC Repair Verification Drive Mode
2010 Mazda 5 Sport, 2.3 L, StandardSECTION Mode 3 - HO2S Heater, HO2S & TWC Repair Verification Drive Mode
- Access to RFCFLAG PID to confirm PCM adaptive memory status.
- If RFCFLAG PID is "Not Learned", performMODE 1 - PCM Adaptive Memory Produce Drive Mode first.
- If RFCFLAG PID is ON, start engine and warm up completely.
- Verify all accessory loads (A/C, headlights, blower fan, rear window defroster) are off.
- Start engine and let idle it for more than 5 minutes.
- Drive vehicle under one of following conditions:
- Vehicle speed is more than 55 MPH for one minute (MTX: 5th gear/ATX: D range).
- Vehicle speed is more than 50 MPH for one minute (MTX: 4th gear/ATX: D range).
- Continue to drive vehicle while maintaining speed between 45-55 MPH for 3 minutes (MTX: 5th gear ATX: D range).
- Stop vehicle and access ON BOARD SYSTEM READINESS to inspect Drive Mode completion status.
- If completed, RFC flag changes from NO to YES.
- If not completed, turn ignition off. Go back to step 3.
- Access DIAGNOSTIC MONITORING TEST RESULTS to inspect monitor results. If MEAS are within specification, repair is completed. If MEAS are not within specification, repair is not completed.
- Verify no DTCs are available.
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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.