LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2021 >> Q50 Pure, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTCS) (6 Of 6) >> Engine (ECM) >> P26AB Multi-Way Control Valve >> DTC Description >> VR30DDTT engine >> DTC Detection Logic
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Detection Logic

Engine coolant temperature has not risen enough to open the multi-way control valve even though the engine has run long enough.

This is due to a leak in the seal or the multi-way control valve being stuck open.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

P26AB

ENGINE COOLANT B/V A POSI SEN

(Engine coolant bypass valve "A" stuck/open)

The engine coolant temperature does not reach to specified temperature even though the engine has run long enough.