LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2017 >> QX80 Base, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (4 Of4) >> DTC/Circuit Diagnosis >> DTC P26A3: Multi-Way Control Valve Motor >> DTC Logic >> DTC Detection Logic
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Detection Logic

NOTE:

If DTC P26A3 is displayed with DTC P26A5, P26A6, and/or P26A7 first perform the trouble diagnosis for DTC P26A5, P26A6, and/or P26A7. Refer to DTC INDEX .

DTC No. Trouble diagnosis name
(Trouble diagnosis content)
DTC detecting condition Possible Cause
P26A3 ENGINE COOLANT BYPASS VALVE
(Engine coolant bypass valve A range/performance)
ECM detects the following status continuously for 10 seconds or more:
Target valve angle - actual valve angle ≥+- 5°
  • Harness or connectors

    (Multi-way control valve motor circuit is open or shorted.)

  • Multi-way control valve