DTC P2097, P2099: Notes
DTC P2097, P2099 [AJ] DETECTION CONDITION AND POSSIBLE CAUSES
| DTC P2097 |
Target A/F feedback system too rich (Right bank) |
| DTC P2099 |
Target A/F feedback system too rich (Left bank) |
| DETECTION CONDITION |
- The PCM monitors the target A/F fuel trim when under the 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 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 |
- Leakage exhaust gas
- HO2S (RR, LR) malfunction
- IAT sensor malfunction
- ECT sensor malfunction
- HO2S (RF, LF) malfunction
- Excessive fuel line pressure
- Fuel pump unit malfunction
- Purge valve malfunction
- Insufficient engine compression
- PCM malfunction
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