Air Fuel Ratio (A/F) Sensor Heater Monitor Readiness Code

NOTE:  All readiness codes are cleared when the 12 volt battery is disconnected, if DTCs have been cleared, or if the PCM is reset with the HDS.

Procedure 

1. Start the engine, and let it idle for 1 minute. The readiness code should switch from incomplete to complete.

2. If the readiness code is still not set to complete, check for a Pending DTC. If there is no DTC, repeat the procedure.