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HOMESERVICE MANUALSMAZDA20066 I, 4D SEDAN, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM L3)DTC P2270NOTES
2006 Mazda 6 i, 4D Sedan, Automatic

DTC P2270: Notes

2006 Mazda 6 i, 4D Sedan, AutomaticSECTION Notes
DTC P2270 DETECTION CONDITION AND POSSIBLE CAUSES

DTC P2270 Middle HO2S signal stuck lean
DETECTION CONDITION 
  • The PCM monitors the middle HO2S input voltage when the following conditions are met. If the subtracted input voltage from the target voltage (calculated by PCM) is 0.4 V or less  for 30 s  , the PCM determines that the front HO2S signal remains lean.

MONITORING CONDITION 
  • ECT: more than 70°C {158°F} 
  • Engine speed: more than 1, 500 RPM 
  • MAF amount: more than 10 g/s {1.32 lb/min} 
  • Short term fuel trim: -20-20% 
  • Long term fuel trim: -15-15% 
  • Fuel injection system status: feedback control

Diagnostic support note 
  • This is a 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.
  • DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Leakage exhaust gas
  • Middle HO2S malfunction
  • Leakage - Fuel injector malfunction
  • Air suction at intake-air system
  • MAF sensor malfunction
  • ECT sensor malfunction
  • PCM malfunction
RENDER: 1.0x

NO RELATED

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