P2097
DTC P2097 - POST CATALYST FUEL TRIM SYSTEM TOO RICH BANK 11. OUTLINE OF DIAGNOSIS
Detect the malfunction of fuel system whether the amount of sub feedback correction shifts to rich or not. Judge poor correction amount when the amount of sub feedback correction from the start to switching ignition OFF shifts to rich. Change the sub feedback correction amount guard value and shift judgment line and count up the guard operation counter (temporary NG counter) if it is a poor correction amount. Judge NG when the value of guard operation counter exceeds the specified value and when the amount of sub feedback correction shifts to rich.
2. COMPONENT DESCRIPTION
3. ENABLE CONDITION
4. GENERAL DRIVING CYCLE
Perform the diagnosis at a speed of 75 km/h (47 MPH) or more.
5. DIAGNOSTIC METHOD
Judge NG when the continuous time that the malfunction criteria are completed is 5 seconds or more. Judge OK when the continuous time that the malfunction criteria are not completed is 5 seconds or more, and then clear NG.
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)