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Home >> Infiniti >> 2013 >> FX50 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0460 Through P1211 >> DTC P1078, P1084: EVT Control Position Sensor >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

NOTE: If DTC P1078 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to "DTC LOGIC ".
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1078 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)

    (Accelerator pedal position sensor 2 circuit is shorted.)

    (Battery current sensor circuit is shorted.)

    [Camshaft position sensor (bank 1) circuit is shorted.]

    (Crankshaft position sensor circuit is shorted.)

    (EVAP control system pressure sensor circuit is shorted.)(1)

    (Manifold absolute pressure sensor circuit is shorted.)

  • Exhaust valve timing control position sensor
  • Accelerator pedal position sensor
  • Battery current sensor
  • Camshaft position sensor (bank 1)
  • Crankshaft position sensor
  • EVAP control system pressure sensor(1)
  • Manifold absolute pressure sensor
  • Accumulation of debris to the signal pick-up portion of the camshaft
P1084 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
(1) Except for Mexico
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