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Home >> Infiniti >> 2017 >> QX80 Base, RWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTCS) (2 Of 4) >> DTC/Circuit Diagnosis >> DTC P0340, P0345: CMP Sensor >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

NOTE:

If DTC P0340 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.

Refer to DTC LOGIC .

DTC No. Trouble diagnosis name
(Trouble diagnosis content)		 DTC detecting condition Possible cause
P0340 CMP SEN/CIRC-B1
[Camshaft position sensor (bank 1) circuit]
  • The cylinder No. signal is not sent to ECM for the first few seconds during engine cranking.
  • The cylinder No. signal is not sent to ECM during engine running.
  • The cylinder No. signal is not in the normal pattern during engine running.
  • Harness or connectors

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

  • Camshaft position sensor (bank 1)
  • Camshaft (INT)
  • Starter motor
  • Starting system circuit
  • Dead (Weak) battery
P0345 CMP SEN/CIRC-B2
[Camshaft position sensor (bank 2) circuit]
  • Harness or connectors

    [Camshaft position sensor (bank 2) circuit is open or shorted.]

  • Camshaft position sensor (bank 2)
  • Camshaft (INT)
  • Starter motor
  • Starting system circuit
  • Dead (Weak) battery
  • Sensor power supply 2
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