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 > 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 ≤ 920rpm
•
Air mass ≤ 24kg/h | |
Threshold Value |
•
Air mass correction value of additive fuel adaption range < -2.9 kg/h | |
Diagnostic Time |
•
10 sec | |
MIL ON Condition |
•
3 Driving Cycles |
