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

P1815

M-MODE SWITCH

TCM monitors manual mode, non-manual mode, up or down switch signal, and detects as irregular when impossible input pattern occurs 2 second or more.

Harness or connectors
(These switches circuit is open or shorted.)
Manual mode switch (Into A/T shift selector)
Manual mode position select switch (Into A/T shift selector)