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Home >> Infiniti >> 2018 >> QX60 AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (2 Of 6) >> DTC/Circuit Diagnosis >> DTC P0138: Ho2S2 >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P0138

HO2S2 (B1)

(O2 Sensor circuit high voltage bank 1 Sensor 2)

A

Diagnosis condition

--

Signal (terminal)

Heated oxygen Sensor 2 (bank 1) signal

Threshold

An excessively high voltage from the Sensor is sent to ECM

Diagnosis delay time

--

B

Diagnosis condition

--

Signal (terminal)

Heated oxygen Sensor 2 (bank 1) signal

Threshold

The minimum voltage from the Sensor is not reached to the specified voltage

Diagnosis delay time

--

P0158

HO2S2 (B2)

(O2 Sensor circuit high voltage bank 2 Sensor 2)

A

Diagnosis condition

--

Signal (terminal)

Heated oxygen Sensor 2 (bank 2) signal

Threshold

An excessively high voltage from the Sensor is sent to ECM

Diagnosis delay time

--

B

Diagnosis condition

--

Signal (terminal)

Heated oxygen Sensor 2 (bank 2) signal

Threshold

The minimum voltage from the Sensor is not reached to the specified voltage

Diagnosis delay time

--