DTC P2275: Notes
DTC P2275 (LF, L3) DETECTION CONDITION AND POSSIBLE CAUSES
| DTC P2275 |
Rear HO2S signal stuck rich |
| DETECTION CONDITION |
- The PCM monitors the rear HO2S input voltage when the following conditions are met. If the subtracted input voltage from the target voltage (calculated by PCM) is above 0.17 V
when the fuel cut, the PCM determines that the front HO2S signal remains rich.
Diagnostic support note
- This is a intermittent monitor (HO2S).
- The MIL illuminates if 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 PCM detects the above malfunction conditions during first drive cycle.
- FREEZE FRAME DATA is available.
- DTC is stored in the PCM memory.
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| POSSIBLE CAUSE |
- Rear HO2S malfunction
- Rear HO2S heater malfunction
- Pressure regulator malfunction (built-in fuel pump unit)
- Fuel injector malfunction
- Leakage exhaust gas
- Purge solenoid valve malfunction
- Purge solenoid valve hoses improper connection
- Insufficient engine compression
- Engine malfunction (leakage engine coolant)
- Restriction in intake-air system
- MAF sensor malfunction
- ECT sensor malfunction
- PCM malfunction
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