If the revised air-fuel-ratio at idle exceeds the certain period, ECM recognizes it as a fault and sends P2188.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Check the revised air-fuel-ratio at idle | 1. Blocking of intake system 2. Fuel leakage in injector 3. Improper fuel pressure |
Enable Conditions |
•
Coolant temperature is higher than 80.3℃
•
Intake air temperature is lower than 80.3℃
•
Throttle angle is lower than 60%
•
Lambda feed back control condition - active
•
Purge valve control duty is than 0%
•
No MAP sensor error
•
No purge valve error
•
No WTS error
•
Engine speed is lower than 920rpm
•
Air mass is lower than 24kg/h | |
Threshold Value |
•
Air mass correction value of additive fuel adaption range is lower than -3kg/h | |
Diagnostic Time |
•
10 sec. | |
MIL ON Condition |
•
3 driving cycles |
