P2097

DTC P2097 POST CATALYST FUEL TRIM SYSTEM TOO RICH BANK 1

1. OUTLINE OF DIAGNOSIS
Detect the malfunction of fuel system from the amount of sub feedback control. Judge NG when the sub feedback learning value sticks to rich sides during sub feedback learning control.




2. COMPONENT DESCRIPTION




3. ENABLE CONDITION

4. GENERAL DRIVING CYCLE
Perform the diagnosis continuously at a constant speed 50 to 100 km/h (31 to 62 MPH).




5. DIAGNOSTIC METHOD
Judge NG when the continuous time of completing the malfunction criteria below becomes more than 5 seconds. Judge OK when it becomes less than 5 seconds.


6. DTC CLEAR CONDITION
- When the OK idling cycle was completed 40 times in a row
- When "Clear Memory" was performed

7. MALFUNCTION INDICATOR LIGHT CLEAR CONDITION
- When OK with similar drive in 3 drive cycles.
- When "Clear Memory" was performed

8. FAIL SAFE
None

9. ECM OPERATION AT DTC SETTING
Memorize the freeze frame data. (For test mode $02)