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HOMESERVICE MANUALSMAZDA20086 S SPORT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 690 (ON-BOARD DIAGNOSTIC (ENGINE CONTROL SYSTEM L3) (5 OF 5))DTC P2270NOTES
2008 Mazda 6 s Sport, 4D Hatchback, Standard

DTC P2270: Notes

2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Notes
WARNING: This page is about a different car, the 2007 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
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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