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Home >> Infiniti >> 2021 >> Q60 Pure, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (1 Of 7) >> Engine (ECM) >> DTC P0037: Ho2S2 Heater >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P0037

HO2S2 HTR (B1)

(HO2S heater control circuit low bank 1 sensor 2)

Diagnosis condition

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Signal (terminal)

Heated oxygen sensor 2 heater (bank 1) signal

Threshold
  • The current amperage in the heated oxygen sensor 2 heater circuit is out of the normal range.

    (An excessively low voltage signal is sent to ECM through the heated oxygen sensor 2 heater.)

  • ECM detects the heated oxygen sensor 2 heater circuit is short to ground.

Diagnosis delay time

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