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DTC P2196: Notes

DTC P2196 [L3] CHART

DTC P2196

Front HO2S signal stuck rich

DETECTION CONDITION

The PCM monitors the front HO2S output voltage when the following conditions are met. If output voltage is more than 0.45 V for 41 s , the PCM determines that the front HO2S signal remains rich.
MONITORING CONDITION
- Fuel injection control system status: feedback zone

Diagnostic support note

This is an intermittent monitor (HO2S).
MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
FREEZE FRAME DATA is available.
DTC is stored in the PCM memory.

POSSIBLE CAUSE

Front HO2S malfunction
Fuel injector malfunction
Excessive fuel pressure
Restriction in intake air system
MAF sensor malfunction
ECT sensor malfunction
PCM malfunction