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Home >> Infiniti >> 2013 >> M56 Sport >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0190 To P1084 >> DTC P1078, P1084: EVT Control Position 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
P1078 EXH TIM SEN/CIRC-B1 [Exhaust valve timing control position sensor (bank 1) circuit] An excessively high or low voltage from the sensor is sent to ECM.
  • Harness or connectors

    [Exhaust valve timing control position sensor (bank 1) circuit is open or shorted)

  • Exhaust valve timing control position sensor (bank 1)
  • Crankshaft position sensor
  • Camshaft position sensor (bank 1)
  • Accumulation of debris to the signal pick-up portion of the camshaft
P1084 EXH TIM SEN/CIRC-B2 [Exhaust valve timing control position sensor (bank 2) circuit]
  • Harness or connectors

    [Exhaust valve timing control position sensor (bank 2) circuit is open or shorted)

  • Exhaust valve timing control position sensor (bank 2)
  • Crankshaft position sensor
  • Camshaft position sensor (bank 2)
  • Accumulation of debris to the signal pick-up portion of the camshaft
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