FixVault

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