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Home >> Nissan-Datsun >> 2017 >> Sentra SR Turbo, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (1.6L) (1 Of 4) >> DTC/Circuit Diagnosis >> DTC P0137: Ho2S2 >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

DTC No. CONSULT screen terms
(Trouble diagnosis content)		 DTC detecting condition Possible cause
P0137 HO2S2 (B1)
(Heated oxygen sensor 2 circuit low voltage)
  • The maximum voltage from the heated oxygen sensor 2 is not reached to the specified voltage.
  • ECM detects the heated oxygen sensor 2 circuit is short to ground.
  • Harness or connectors

    (Heated oxygen sensor 2 circuit is open or shorted)

  • Heated oxygen sensor 2
  • Fuel pressure
  • Fuel injector
  • Intake air leaks
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