how to fix P0700 code in Honda Accord 9th Generation (2013-2017)

Solution

1. Preparation

• Gather necessary tools and materials.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Ensure the vehicle is on a flat surface and secure it with wheel chocks.

2. Check and Replace Transmission Fluid

• Tools Required: Transmission fluid pump, funnel, socket set.
• Remove the transmission fluid drain plug using a socket wrench.
• Allow the old fluid to drain completely into a suitable container.
• Inspect the old fluid for metal shavings or burnt smell, indicating internal issues.
• Replace with the manufacturer-recommended transmission fluid per specifications (e.g., Honda ATF DW-1).
• Replace the drain plug and torque it to the specification (usually around 30 lb-ft).

3. Inspect and Replace TCM

• Tools Required: OBD-II scanner, socket set, multimeter.
• Locate the TCM; it is typically found near the transmission or under the dashboard.
• Disconnect the TCM wiring harness and use a multimeter to check for voltage and ground.
• If the TCM is faulty, remove the mounting bolts and disconnect the harness, then replace it with a new unit.
• Reconnect the harness and mount the new TCM securely.

4. Check and Replace Transmission Range Sensor

• Tools Required: Socket set, multimeter.
• Locate the transmission range sensor on the transmission.
• Disconnect the sensor’s wiring harness and use a multimeter to test for proper resistance values according to the service manual.
• If faulty, remove the sensor using a socket set and replace it with a new part.
• Reconnect the wiring harness.

5. Final Checks

• Reconnect the negative battery terminal.
• Clear the DTCs using the OBD-II scanner.
• Conduct a test drive to ensure proper transmission operation.