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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 P2080: Exhaust Gas Temperature Sensor >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

NOTE:
  • DTC P2080 is displayed with DTCs related to following items, first perform the trouble diagnosis of DTCs.
    • Crankshaft position sensor
    • Misfire
    • Fuel system
    • A/F sensor 1
    • A/F sensor 1 heater
    • Mass air flow sensor
    • Engine coolant temperature sensor 1
    • Intake air temperature sensor
    • Vehicle speed sensor
  • DTC P2080 is displayed with DTC P0544, P0545, P0546, or P2081, first perform the trouble diagnosis for DTC P0544, P0545, P0546, or P2081.
DTC No. CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition Possible cause
P2080 EXHAUST GAS TEMP SENSOR 1 B1
(Exhaust gas temperature sensor circuit range/performance bank 1 sensor 1)
ECM detects the following status continuously for 20 seconds or more:
  • The difference between estimated exhaust gas temperature calculated by ECM and temperature sent from exhaust gas temperature sensor is approx. 100°C (212°F) or more.
  • The difference between exhaust gas temperature sent from exhaust gas temperature sensor and estimated exhaust gas temperature calculated by ECM is 100°C (212°F) or more.
  • Exhaust gas temperature sensor
  • Exhaust gas leaks