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Home >> Infiniti >> 2013 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0171 To P0463 >> DTC P0197, P0198: EOT Sensor >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

DTC No. Trouble diagnosis name
(Trouble diagnosis content)
DTC Detecting Condition Possible Cause
P0197 EOT SEN/CIRC
(Engine oil temperature sensor circuit low input)
An excessively low voltage from the sensor is sent to ECM.
  • Harness or connectors

    (The engine oil temperature sensor circuit is open or shorted.)

  • Engine oil temperature sensor
P0198 EOT SEN/CIRC
(Engine oil temperature sensor circuit high input)
An excessively high voltage from the sensor is sent to ECM.