how do I fix the P0700 code on my Honda Pilot YF3 (2016-2022)?

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on level ground and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Check and Replace Transmission Fluid

• Tools Required: Torque wrench, fluid pump, drain pan.
• Remove the transmission fluid drain plug and let the fluid drain completely into the pan.
• Inspect the old fluid for metal shavings or burning smell; if contaminated, flush the transmission.
• Replace with new fluid according to Honda specifications (typically Honda ATF DW-1).
• Reinstall the drain plug and torque it to the manufacturer's specifications (usually around 33 lb-ft).

3. Inspect and Repair Wiring/Connectors

• Visually inspect all wiring and connectors leading to the TCM for any signs of wear, fraying, or corrosion.
• If damaged, replace the wiring harness or connectors as needed.
• Ensure all connectors are securely attached and free of moisture.

4. TCM Inspection

• Tools Required: Multimeter.
• Test the TCM's input and output signals using a multimeter according to the specifications outlined in the service manual.
• If the TCM is found to be faulty, replace it with a new unit, ensuring to reprogram it if necessary.

5. Clear Codes and Test Drive

• Reconnect the battery terminal and use the OBD-II scanner to clear any stored codes.
• Test drive the vehicle to ensure proper transmission operation and confirm that the check engine light does not reappear.