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Home >> Infiniti >> 2021 >> Q50 Pure, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (1 Of 6) >> Engine (ECM) >> DTC P0030: A/F Sensor 1 Heater >> DTC Description >> VR30DDTT engine >> DTC Detection Logic

DTC Detection Logic

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P0030

HO2S1 HTR B1

(HO2S heater control circuit bank 1 sensor 1)

Deterioration in A/F sensor 1 heater performance.

(Voltage signal transmitted from A/F sensor 1 heater to ECM is higher/lower than voltage in the normal range.)
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