California Emission Regulation Applicable ATX Model: Notes

2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Notes
WARNING: This page is about a different variant/trim than selected.
DTC P2196 [L3] DETECTION CONDITION AND POSSIBLE CAUSES

DTC P2196 Front HO2S signal stuck rich
DETECTION CONDITION 
  • The PCM monitors the front HO2S output current when the following conditions are met. If the average output current is less than 0.8 A  for 25 s  , the PCM determines that the front HO2S signal remains rich.

MONITORING CONDITION 
  • ECT: more than 70°C {158°F} 
  • Engine speed: 1, 000-3, 200 RPM 
  • MAF amount: 6-80 g/s {0.80-10.58 lb/min} 
  • Target A/F feedback system status: feedback control
  • Output voltage from the middle HO2S: less than 0.8 V 

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 
  • Front HO2S malfunction
  • Fuel injector malfunction
  • Excessive fuel pressure
  • Restriction in intake-air system
  • MAF sensor malfunction
  • ECT sensor malfunction
  • PCM malfunction
RENDER: 1.0x

NO RELATED

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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