DTC Detection Logic

WARNING: This page is about a different car, the 2018 Nissan NV3500 HD, 2018 Nissan NV2500 HD, and 2018 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

DTC

Item

(CONSULT screen terms)

A/T CHECK indicator lamp judgment flicker

Diagnostic item is detected when...

Possible cause

P0744

TORQUE CONVERTER

3rd

A/T cannot perform lock-up even if electrical circuit is good.
TCM detects as irregular by comparing difference value with slip rotation.

Harness or connectors
(Sensor circuit is open or shorted.)
Torque converter clutch solenoid valve
Hydraulic control circuit