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Home >> Infiniti >> 2020 >> QX50 Autograph, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (11 Of 12) >> DTC/Circuit Diagnosis >> DTC P26AB: Multi-Way Control Valve >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

NOTE: If DTC P26AB is displayed with DTC P0300, P0301, P0302, P0303 or P0304, first perform the trouble diagnosis for P0300, P0301, P0302, P0303, P0304. Refer to DTC Description .

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

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P26AB

00

ENGINE COOLANT B/V A POSI SEN

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

Diagnosis condition

--

Signal (terminal)

--

Threshold

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

Diagnosis delay time

5 consecutive seconds