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Home >> Nissan-Datsun >> 2015 >> Sentra FE+S >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostic Trouble Codes (DTCS) P0172-P1550) >> DTC/Circuit Diagnosis >> DTC P1078: EVT Control Position 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
P1078 EXH TIM SEN/CIRC-B1
(Exhaust valve timing control position sensor circuit bank 1)
An excessively high or low voltage from the sensor is sent to ECM.
  • Harness or connectors

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

  • Accumulation of debris to the signal pick-up portion of the camshaft
  • Exhaust valve timing control position sensor
  • Sensor power supply 2 circuit