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