how to fix P0700 code in Honda Pilot YF4 (2023-Present)

Solution

1. Preparation

• Gather tools required for the job.
• Ensure the vehicle is on a level surface, and engage the parking brake.
• Disconnect the battery terminals to prevent electrical shorts.

2. Inspect Transmission Fluid

• Locate the transmission dipstick. Remove it and wipe it clean with a lint-free cloth.
• Reinsert the dipstick, then remove it again to check the fluid level.
• If low, add Honda ATF DW-1 until the correct level is reached.
• If the fluid is discolored or smells burnt, proceed to change the fluid and filter.

3. Repair Wiring and Connectors

• Visually inspect the wiring harness leading to the TCM for any signs of wear or damage.
• If any damaged wires are found, repair them using heat-shrink tubing and solder.
• Clean any corroded connectors with electrical contact cleaner and reconnect them securely.

4. TCM Testing and Replacement

• Using a multimeter, check the voltage at the TCM connector while the ignition is in the "ON" position.
• If the voltage is out of spec, troubleshoot the power supply circuit to the TCM.
• If the TCM is determined faulty, unbolt it from its mounting and disconnect the electrical connectors.
• Install the new TCM by reversing the removal steps and ensure all connections are secure.

5. Fluid Change (if necessary)

• Raise the vehicle securely using jack stands.
• Remove the transmission pan bolts and carefully lower the pan to drain the fluid.
• Replace the transmission filter and clean the pan.
• Reinstall the pan with a new gasket and torque bolts to manufacturer specifications (usually around 10-12 ft-lbs).
• Fill the transmission with Honda ATF DW-1 fluid through the dipstick tube.