DTC P2097: Notes
DTC P2097 DETECTION CONDITION AND POSSIBLE CAUSES
| DTC P2097 |
Target A/F feedback system too rich |
| DETECTION CONDITION |
- The PCM monitors the target A/F fuel trim when under the target A/F feedback control. If the fuel trim is more/less than specification, the PCM determines that the target A/F feedback system is too rich.
Diagnostic support note
- This is a continuous monitor. (Fuel system)
- MIL illuminates if PCM detects above malfunction condition in two consecutive drive cycles or in one drive cycle while DTC for the same malfunction has been stored in PCM.
- PENDING CODE is available if PCM detects the above malfunction condition during first drive cycle.
- FREEZE FRAME DATA is available.
- The DTC is stored in the PCM memory.
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| POSSIBLE CAUSE |
- Leakage exhaust gas
- Middle/Rear HO2S malfunction
- IAT sensor malfunction
- ECT sensor malfunction
- Front HO2S malfunction
- Excessive fuel line pressure
- Fuel pump unit malfunction
- Purge valve malfunction
- Insufficient engine compression
- PCM malfunction
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