PCM checks the output signals from HO2S’s during fuel cut-off. If HO2S’s signal is rich the PCM sets a P2196 DTC.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Monitor HO2S's signal | 1. Poor Connection 2. Faulty HO2S 3. Faulty PCM |
Enable Conditions |
•
Battery voltage greater than 10V
•
Engine running longer than 60sec.
•
Fuel cut-off mode
•
Engine at operating temperature
•
HO2S value does not change | |
Threshold value |
•
HO2S's signal greater than 0.2V | |
Diagnosis Time |
•
Continuous (More than 8 sec. failure for every 9 sec. Test) | |
MIL On Condition |
•
3 Driving Cycles |
