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Home >> Infiniti >> 2021 >> Q50 Pure, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTCS) (5 Of 6) >> Engine (ECM) >> P2099 A/F Sensor 1 >> DTC Description >> VR30DDTT engine >> DTC Detection Logic
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DTC Detection Logic

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P2099

POST CATALYST 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.