If the Long Term Fuel Trim(Additive) is lower than the specified value, the ECM/PCM sets DTC P2188.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Monitoring the deviation of long term fuel trim in Idle | 1. Blocking of intake system 2. Fuel leakage in injector 3. Improper fuel pressure |
Enable Conditions |
•
Engine Coolant Temperature(ECT) > 73°C
•
Idle Lambda adaptation active conditions: Engine speed < 900rpm Mass Fuel Flow(MFF) < 0.032rpm
•
Low estimated fuel dilution in oil (only for too rich system) | |
Threshold Value |
•
Min Limit = -0.007g/rev | |
Diagnostic Time |
•
90sec | |
MIL On Condition |
•
2 driving cycles |
