DTC P2196:00: Notes

• The PCM monitors the equivalence ratio when the following conditions are met. If the equivalence ratio is less than 0.85 for 25 s  , the PCM determines that the A/F sensor signal remains rich.

MONITORING CONDITIONS 

• ECT: more than 60 °C {140 °F} 
• Engine speed: 1,000-3,200 rpm 
• Absolute load: 20-62.5% 
• Output voltage from the A/F sensor: less than 0.7 V 

• This is an intermittent monitor (A/F sensor, HO2S).
• The MIL illuminates if the PCM detects the above malfunction 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 the PCM detects the above malfunction condition during the first drive cycle.
• FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
• The DTC is stored in the PCM memory.

• A/F sensor heater malfunction
• A/F sensor malfunction
  • Looseness A/F sensor
  • Leakage exhaust system
  • A/F sensor malfunction
• Air suction in intake air system
• MAF sensor malfunction
• Fuel supply system malfunction or improper fuel line pressure
  • Pressure regulator (built-in fuel injection pump) malfunction
  • Fuel pump unit malfunction
  • Fuel leakage on fuel line from fuel distributor and fuel pump
  • Fuel filter clogged or restricted
• Fuel injector malfunction
• PCM malfunction