DTC Description

The PCM monitors the fuel trim values at idle during predetermined driving enable conditions. If the average long term or short term fuel trims exceed the determined limit over a certain period of time, PCM sets DTC P2189.

DTC Detecting Condition

Item

Detecting Condition

Possible cause

DTC Strategy

Monitor the fuel trim value at idle

1.

Air leakage

2.

Improper fuel pressure

3.

PCV valve stuck

4.

Restricted injector

Enable Conditions

Engine at operating temperature

Engine running at idle for over 5 minutes

Engine coolant temperature between 60°C (140°F) and115°C (239°F)

No disabling faults (DTCs related to HO2S, purge valve,catalyst )

Threshold value

Average of short term fuel trim greater than 0.8 and Average of long term fuel trim greater than 1.24

Diagnosis Time

Continuous

MIL On Condition

3 Driving Cycles

Яндекс.Метрика