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Home >> Nissan-Datsun >> 2019 >> Altima Edition ONE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Control System (DTC/Circuit Diagnosis) (Pr25DD) (1 Of 4)) >> DTC/Circuit Diagnosis >> P0037 Ho2S2 Heater >> DTC Description >> PR25DD engine >> DTC Detection Logic

DTC Detection Logic

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DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P0037

00

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 signal

Threshold
  • 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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