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Home >> Infiniti >> 2014 >> Q60 Base, 2D Convertible, Automatic Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - DTCS P1233 To P2138 (Convertible) >> DTC P2096, P2097, P2098, P2099: A/F Sensor 1 >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

DTC No. Trouble diagnosis name (Trouble diagnosis content) DTC detecting condition Possible Cause
P2096 POST CAT FUEL TRIM SYS B1 (Post catalyst fuel trim system too lean bank 1) The output voltage computed by ECM from the A/F sensor 1 signal is shifts to the lean side for a specified period.
  • A/F sensor 1 (bank 1)
  • A/F sensor 1 heater
  • Heated oxygen sensor 2 (bank 1)
  • Fuel pressure
  • Fuel injector
  • Intake air leaks
  • Exhaust gas leaks
P2097 POST CAT FUEL TRIM SYS B1 (Post catalyst fuel trim system too rich bank 1) The A/F signal computed by ECM from the A/F sensor 1 signal is shifts to the rich side for a specified period.
P2098 POST CAT FUEL TRIM SYS B2 (Post catalyst fuel trim system too lean bank 2) The output voltage computed by ECM from the A/F sensor 1 signal is shifts to the lean side for a specified period.
  • A/F sensor 1 (bank 2)
  • A/F sensor 1 heater
  • Heated oxygen sensor 2 (bank 2)
  • Fuel pressure
  • Fuel injector
  • Intake air leaks
  • Exhaust gas leaks
P2099 POST CAT FUEL TRIM SYS B2 (Post catalyst fuel trim system too rich bank 2) The A/F signal computed by ECM from the A/F sensor 1 signal is shifts to the rich side for a specified period.