DTC P2196: Notes
DTC P2196 [L3] DETECTION CONDITIONS AND POSSIBLE CAUSES
| DTC P2196 |
A/F sensor signal stuck rich |
| DETECTION CONDITION |
- The PCM monitors the A/F sensor equivalence ratio (lambda) when the following conditions are met. If equivalence ratio is below 0.85 for 25s
, the PCM determines that the A/F sensor signal remains rich.
MONITORING CONDITION
- Fuel injection control system status: feedback control
- A/F sensor voltage below 0.2V
- Engine speed is 1,000-3,200 rpm
- Absolute load: 20-62.5%
Diagnostic support note
- This is an intermittent monitor (A/F sensor, 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 (Mode 2/Mode 12) is available.
- DTC is stored in the PCM memory.
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| POSSIBLE CAUSE |
- A/F sensor malfunction
- PCM malfunction
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