ECM assumes Lambda sensor is out of control and shows P2195 when upstream O2 sensor displays rich condition in spite of continuous correcting by downstream O2 sensor.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
check the revised air-fuel-ratio at idle | 1. Poor connection 2. S1 3. Blocking of intake system 4. Fuel leakage in injector 5. Improper fuel pressure |
Enable Conditions |
•
Engine speed is higher than 1120rpm and lower than 3000rpm
•
Catalyst temp.(model) is higher than 350℃ | |
Threshold Value |
•
Deviation value of air fuel ratio control is higher than 0.07 | |
Diagnostic Time |
•
- | |
MIL ON Condition |
•
2 Driving Cycles |
