P1782 Transfer Low Ratio Switch Circuit

Category: Powertrain - Transmission
Severity: Check Engine Light
Applies to: 4Runner, Tacoma, Land Cruiser with low range

What does P1782 mean on a Toyota?

P1782 — Transfer Low Ratio Switch Circuit. This Toyota-enhanced code applies to 4Runner, Tacoma, Land Cruiser with low range.

Common causes of P1782

Failed transfer low switch
Open switch circuit
Stuck transfer actuator
Corroded transfer connector
4WD module fault

How to fix P1782

Cycle transfer ranges and note failures
Test the low switch
Verify actuator movement
Inspect connectors
Service the switch or actuator per results