P1701 - FAULT CODE - OBD2

The TCM (Transmission Control Module) is a device that collects data and processes various signals from the vehicle’s transmission to regulate transmission shifting. On an ongoing basis, the TCM works with a lot of parts that depend on it, for example, the engine, Brake Pedal Position Sensor, Transmission Fluid Temperature Sensor, Turbine Sensor, and Throttle Position Sensor.

In modern systems, transmission is electronically controlled, so the Transmission Control Module regulates transmission performance so that gear changes are made consistently and accurately.

The P1701 OBD2 diagnostic code is set when the TCM power is interrupted or turned off, for example, if the battery is disconnected or if the self-test memory function is stopped.

• Check Engine light ON.

Reasons to set the P1701 OBDII fault code:

• There may be damage to the battery and ignition switch cables or connectors.
• TCM circuit may be open or shorted.
• The Transmission Control Module may be damaged.

Steps to solve the P1701 OBD2 DTC:

• See Technical Service Bulletins.
• Before making any repair of this code, note that the P1701 code is set after TCM
• Check the condition of the wiring and connections to the battery and ignition switch. If you discover damage caused by wear or corrosion, make repairs.
• Check all the wiring and connections to the Transmission Control Module. Follow the steps in the service manual to verify that your control circuit is not shorted or open. Make any necessary repairs.