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 while under target A/F feedback control. If the fuel trim is 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)
- The MIL illuminates if the PCM detects the above malfunctioning 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 conditions during the first drive cycle.
- FREEZE FRAME DATA is available.
- DTCs are stored in the PCM memory.
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| POSSIBLE CAUSE |
- Exhaust gas leakage
- Rear HO2S malfunction
- IAT sensor malfunction
- ECT sensor malfunction
- Front HO2S malfunction
- Excessive fuel line pressure
- Fuel pressure sensor malfunction
- Relief valve (built-in fuel delivery pipe) malfunction
- Spill valve control solenoid valve (built-in high pressure fuel pump) malfunction
- High pressure fuel pump malfunction
- Fuel pump malfunction
- Purge valve malfunction
- Insufficient engine compression
- PCM malfunction
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