LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2017 >> QX80 Base, RWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTCS) (1 Of 4) >> DTC/Circuit Diagnosis >> DTC P0018: Intake Valve Timing Control >> DTC Logic >> DTC Detection Logic
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Detection Logic

NOTE:

If DTC P0018 is displayed with DTC P0081, first perform the trouble diagnosis for DTC P0081. Refer to  DTC LOGIC  . 

DTC No. Trouble diagnosis
(Trouble diagnosis content)
Detecting condition Possible cause
P0018 Crankshaft position B2 sensor A
(Crankshaft position - camshaft position correlation bank 2 sensor A)
During the diagnosis of alignment of intake valve timing control, the angle difference between actual angle and target angle is 13 degrees or more.
  • Crankshaft position sensor
  • Camshaft position sensor
  • Intake valve timing control solenoid valve
  • Accumulation of debris to the signal pick-up portion of the camshaft
  • Timing chain installation
  • Foreign matter caught in the oil groove for intake valve timing control