how to fix P0700 code in my Honda Pilot Third Generation (2016-present)

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, multimeter, torque wrench, fluid pump.
• Safety Warnings: Disconnect the battery before working on electrical systems. Allow the engine to cool before opening the transmission.

2. Address Fault Codes

• Clear the stored P0700 code using the OBD-II scanner.
• Re-scan for codes to see if any specific transmission-related codes reappear.

3. Check and Replace Transmission Fluid

• Sub-steps:
  1. Raise the vehicle and secure it on jack stands.
  2. Remove the transmission fluid drain plug using the socket set.
  3. Allow the fluid to drain completely into a suitable container.
  4. Inspect the drained fluid for metal shavings or burnt odor.
  5. Replace the drain plug and torque it to the manufacturer’s specifications.
  6. Using a fluid pump, refill the transmission with the recommended type and amount of fluid.

4. Inspect and Repair Electrical Connections

• Sub-steps:
  1. Visually inspect the wiring harness and connectors to the TCM for signs of wear or damage.
  2. Use a multimeter to test for continuity and proper voltage at the TCM connectors.
  3. Repair or replace any damaged wiring or connectors found during inspection.

5. Check Transmission Range Sensor

• Sub-steps:
  1. Locate the transmission range sensor (neutral safety switch).
  2. Disconnect the sensor’s electrical connector.
  3. Test the sensor with a multimeter for proper resistance values according to the service manual.
  4. Replace the sensor if it does not meet specifications.

6. Reinstall and Test TCM

• Sub-steps:
  1. If the TCM was tested and found faulty, replace it with a new unit.
  2. Reconnect all electrical connections and ensure they are secure.
  3. Reconnect the battery and start the engine.
  4. Perform a test drive to ensure normal operation of the transmission.