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Home >> Acura >> 2012 >> RL >> Repair and Diagnosis >> Engine Performance >> System >> Fuel And Emissions Systems >> How to Set Readiness Codes >> Air Fuel Ratio (A/F) Sensor Monitor and Readiness Code >> Procedure
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Air Fuel Ratio (A/F) Sensor Monitor and Readiness Code: Procedure

  1. Start the engine.
  2. Test-drive the vehicle under stop-and-go conditions with short periods of steady cruise. During the drive, decelerate (with the throttle fully closed) for 5 seconds. After about 3.5 miles (5.6 km), the readiness code should switch from incomplete to complete.
  3. Check the readiness codes screen for the AIR FUEL RATIO (A/F) SENSOR in the DTCs MENU with the HDS.
    • If the HDS indicates complete, readiness is complete.
    • If the HDS indicates not complete, go to the next step.
  4. Check for a Pending DTC. If there is no DTC, the enable criteria was probably not met. Select the DATA LIST Menu. Check the ECT SENSOR in the ALL DATA LIST with the HDS. If the ECT is lower than 158°F (70°C), run the engine until it is more than 158°F (70°C), then repeat the procedure.
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