how to fix P0700 transmission trouble code in Ford Explorer Fifth Generation (2011-2019)?

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, multimeter, transmission fluid, funnel, shop towels.
• Safety Warnings: Disconnect the battery before working on electrical systems.

2. Clear Trouble Codes

• Connect the OBD-II scanner to the vehicle's diagnostic port.
• Follow the scanner's instructions to clear the P0700 and any other related codes.
• Start the engine and allow it to run for a few minutes, then check if the codes return.

3. Inspect and Replace Transmission Fluid

• With the engine running, check the transmission fluid level using the dipstick.
• If low, add the manufacturer-recommended transmission fluid until it reaches the correct level.
• If the fluid appears dark or has a burnt smell, consider a complete fluid change:
  • Place a drain pan beneath the transmission pan.
  • Remove the transmission pan bolts and gently pry off the pan.
  • Dispose of the old fluid and clean the pan.
  • Replace the filter and install a new gasket if needed.
  • Refill with fresh transmission fluid.

4. Inspect and Repair Wiring and Connectors

• Carefully inspect the wiring harness leading to the transmission control module.
• Look for any frayed wires, loose connections, or corrosion.
• Repair or replace any damaged wiring or connectors as necessary.

5. Test the Transmission Range Sensor

• Locate the transmission range sensor on the transmission.
• Use a multimeter to check the sensor's resistance and operation:
  • Disconnect the electrical connector and measure the resistance across the terminals.
  • Compare the readings to the specifications in the service manual.
• Replace the range sensor if it does not meet the specifications.

6. Reconnect Battery and Road Test

• Reconnect the battery and start the vehicle.
• Conduct a road test to ensure the transmission operates smoothly without the return of the P0700 code.