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Home >> Infiniti >> 2023 >> QX55 Essential >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (5 Of 5) >> DTC/Circuit Diagnosis >> DTC P2237: O2 sensor bank 1 sensor 1 >> DTC Description >> Notes

DTC Description: Notes

To judge malfunctions, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1 signal fluctuates according to fuel feedback control.