If the Long Term Fuel Trim(Multiplicative) is higher than the specified value, the ECM sets DTC P2191.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Multiplicative Long Term FT upper limit reached | 1. Air leakage 2. Improper fuel pressure 3. PCV valve stuck 4. Clogging of injector |
Enable Conditions |
•
25 % < Torque < 60 %
•
Engine speed > 500 rpm
•
ECT > 60 ℃(140 °F)
•
IAT < 80 ℃(176 °F)
•
Fuel System Status : Closed loop
•
Canister purge control off | |
Threshold Value |
•
Long Term Fuel Trim (multiplicative) > 1.23 | |
Diagnostic Time |
•
90 sec. | |
MIL ON Condition |
•
2 Driving Cycles |
