October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

DTC Parameters

Engine speed is 1500-3200 RPM.
Loop status is closed.
Calculated airflow is 7-25 grams per second.
No CMP, CKP, ECT, EGR, EVAP purge solenoid, fuel trim, IAT, MAP, misfire, or TP sensor DTCs are set.

DTC sets when average response time of lean-to-rich switch is greater than 140 milliseconds for greater than 100 seconds; or average response time of rich-to-lean switch is greater than 225 milliseconds for greater than 100 seconds.