DTC P2097: Notes
DTC P2097 DETECTION & CONDITION 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 than the specification, the PCM determines that the target A/F feedback system is too rich.
Diagnostic support note
- This is a continuous monitor (Fuel system).
- The 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.
- The DTC is stored in the PCM memory.
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| POSSIBLE CAUSE |
- Leakage exhaust gas
- Rear HO2S malfunction
- IAT sensor malfunction
- ECT sensor malfunction
- Front HO2S malfunction
- Fuel pump speed control malfunction
- Fuel line pressure malfunction
- Fuel pump unit malfunction
- Purge solenoid valve malfunction
- Insufficient compression
- Metering oil pump malfunction
- Engine oil condition malfunction
- Increased oil pressure
- Oil passage malfunction
- Engine malfunction
- PCM malfunction
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