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HOMESERVICE MANUALSMAZDA20066 I, 4D SEDAN, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM L3)DTC P2274NOTES
2006 Mazda 6 i, 4D Sedan, Automatic

DTC P2274: Notes

2006 Mazda 6 i, 4D Sedan, AutomaticSECTION Notes
DTC P2274 DETECTION CONDITION AND POSSIBLE CAUSES

DTC P2274 Rear HO2S signal stuck lean
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 below 0.17 V  even after recovery from fuel cut, the PCM determines that the front HO2S signal remains lean.

Diagnostic support note 
  • This is an intermittent monitor (HO2S).
  • 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.
POSSIBLE CAUSE 
  • Leakage exhaust gas
  • Rear HO2S malfunction
  • Fuel injector malfunction
  • Leakage fuel
  • MAF sensor malfunction
  • ECT sensor malfunction
  • Air suction at intake-air system
  • PCM malfunction
RENDER: 1.0x

NO RELATED

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