ECM sets DTC P2191 if ECM monitors and detects fuel adaptation value is higher than specifications while vehicle is not in idle condition.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Check the revised air-fuel-ratio | 1. Air leakage 2. Improper fuel pressure 3. PCV valve stuck 4. Clogging of injector |
Enable Conditions |
•
Coolant temperature > 80.3℃
•
Intake air temperature < 80.3℃
•
Throttle angle < 60%
•
Lambda feed back control condition - active
•
Purge valve control duty = 0%
•
No MAP sensor error
•
No purge valve error
•
No WTS error
•
Engine speed 1200 ~3800 rpm
•
Air mass 36~160 kg/h | |
Threshold Value |
•
Fuel adaptive value of Multiplicative fuel adaption range > 1.24 | |
Diagnostic Time |
•
10 sec | |
MIL ON Condition |
•
3 driving cycle |
