how to fix P0700 code in Toyota Highlander Third Generation (2014-2019)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the battery to avoid electrical shorts.

2. Check and Replace Transmission Fluid

• Tools Needed: Transmission fluid pump, socket set, drain pan.
• Remove the transmission drain plug and allow fluid to drain completely into the pan.
• Inspect the fluid for debris or burning smell. Replace with new fluid if necessary.
• Reinstall the drain plug and torque to manufacturer specifications.

3. Inspect and Replace the Transmission Range Sensor

• Tools Needed: Socket set, screwdriver, multimeter.
• Locate the transmission range sensor on the transmission.
• Disconnect the wiring harness from the sensor.
• Remove the sensor using the socket set and replace it with a new one.
• Reconnect the wiring harness and ensure it is secure.

4. Repair/Replace Electrical Connections

• Tools Needed: Wire crimpers, electrical tape, multimeter.
• Inspect the wiring harness and connectors for any signs of wear, corrosion, or damage.
• Repair any damaged sections by cutting and splicing with solder and electrical tape or replace the entire harness if necessary.

5. Reconnect Battery and Clear Codes

• Reconnect the battery terminals securely.
• Use the OBD-II scanner to clear any stored trouble codes.
• Start the vehicle and check for any return of the P0700 code.