how to diagnose P0700 transmission code in Ford Explorer Sixth Generation (2020-present)

Solution

1. Preparation

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

2. Fluid Inspection and Replacement

• Tools Required: Transmission fluid pump, funnel, socket set, torque wrench.
• Remove the transmission fluid dipstick, and check the fluid level.
• If the fluid is low, locate the fill plug and refill the transmission with the recommended fluid type (Ford Mercon LV).
• If the fluid is contaminated, drain the transmission fluid from the pan, replace the filter, and refill with new fluid.
  • Sub-step: For filter replacement, remove the transmission pan bolts, carefully lower the pan, and replace the filter. Torque the pan bolts to the manufacturer’s specifications.

3. Electrical Diagnostics

• Tools Required: Multimeter, wiring harness repair tools.
• Inspect and repair any damaged wiring or connectors found in the initial diagnostic step.
• If the TCM is faulty, replace it. Disconnect the old module, install the new one, and reconnect the harness.
• Clear the codes using the OBD-II scanner and recheck for any new or persistent codes.

4. Road Test and Final Checks

• Start the vehicle and allow it to reach operating temperature.
• Perform a road test to ensure proper shifting and operation of the transmission.
• Monitor the vehicle for any returning symptoms or new codes with the scanner.