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Home >> Infiniti >> 2017 >> QX80 Base, RWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTCS) (3 Of 4) >> DTC/Circuit Diagnosis >> DTC P0547, P0548: Exhaust Gas Temperature Sensor >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

DTC No. CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition Possible cause
P0547 EXHAUST GAS TEMP SENSOR 1 B2
(Exhaust gas temperature sensor circuit bank 2 sensor 1)
ECM detects that a voltage signal from exhaust gas temperature sensor is less than 0.025 V for 5 consecutive seconds.
  • Harness or connectors

    (Exhaust gas temperature sensor circuit is shorted.)

  • Exhaust gas temperature sensor
P0548 EXHAUST GAS TEMP SENSOR 1 B2
(Exhaust gas temperature sensor circuit low bank 2 sensor 1)
ECM detects that a voltage signal from exhaust gas temperature sensor is less than 0.209 V for 5 consecutive seconds.