how to fix Honda Pilot Third Generation (2016-present) P0700 transmission error code

Solution

1. Preparation

• Gather tools and parts.
• Ensure the vehicle is on a level surface and secure it with wheel chocks.
• Disconnect the negative terminal of the battery.

2. Check and Replace Transmission Fluid

• Tools Required: Fluid pump, 10mm socket, drain pan.
• Remove the drain plug using a 10mm socket and drain the old fluid into a pan.
• Inspect the fluid; if it’s burnt or contaminated, replace it.
• Reinstall the drain plug and refill the transmission with the manufacturer-recommended fluid using a fluid pump until it reaches the proper level.

3. Inspect and Repair Electrical Connections

• Tools Required: Multimeter, wire brush, dielectric grease.
• Inspect the wiring harness and connectors leading to the TCM for any signs of fraying, corrosion, or loose connections.
• Use a multimeter to check for continuity in the wiring; repair or replace any damaged wiring.
• Clean connectors with a wire brush and apply dielectric grease to prevent future corrosion.

4. Test and Replace TCM (if necessary)

• Tools Required: OBD-II scanner, multimeter, socket set.
• If previous steps do not resolve the issue, test the TCM functionality using an OBD-II scanner for error codes.
• If the TCM is confirmed faulty, remove it by unscrewing the mounting bolts and disconnecting the electrical connectors.
• Install the new TCM by reversing the removal process, ensuring all connections are secure.

5. Final Checks

• Reconnect the battery terminal and start the vehicle.
• Clear all diagnostic trouble codes using the OBD-II scanner.
• Test drive the vehicle to confirm that the transmission operates smoothly without error codes.