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Home >> Infiniti >> 2019 >> QX60 Pure, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (2 Of 17) >> DTC/Circuit Diagnosis >> DTC P0057: 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

--

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

--

P0038

HO2S2 HTR (B1)

(HO2S heater control circuit high bank 1 sensor 2)

Diagnosis condition

--

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 high voltage signal is sent to ECM through the heated oxygen sensor 2 heater.)

Diagnosis delay time

--

P0057

HO2S2 HTR (B2)

(HO2S heater control circuit low bank 2 sensor 2)

Diagnosis condition

--

Signal (terminal)

Heated oxygen sensor 2 heater (bank 2) 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

--

P0058

HO2S2 HTR (B2)

(HO2S heater control circuit high bank 2 sensor 2)

Diagnosis condition

--

Signal (terminal)

Heated oxygen sensor 2 heater (bank 2) signal

Threshold

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

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

Diagnosis delay time

--