If the revised air-fuel-ratio at idle exceeds the certain period, ECM/PCM recognizes it as a fault and sends P2188.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Additive Long Term FT lower limit reached | 1. Blocking of intake system 2. Fuel leakage in injector 3. Improper fuel pressure |
Enable Conditions |
•
24% > Torque > 5.8%
•
Engine speed > 1000rpm
•
ECT > 65℃
•
IAT < 80℃
•
Closed loop fuel control "ON"
•
Canister purge control "OFF" | |
Threshold Value |
•
Fuel adaptive value of additive fuel adaption range is lower than -7.5% | |
Diagnostic Time |
•
25 sec. | |
MIL On Condition |
•
2 Driving Cycle |
