how to fix P0700 code on my Ford F-150 12th Generation (2009-2014)

Solution

1. Preparation

• Gather tools and parts required for repair.
• Disconnect the battery to prevent electrical shorts.
• Ensure the vehicle is on a level surface and secured with jack stands.

2. Check and Replace Transmission Fluid

• Tools Required: Transmission funnel, drain pan
• Check the transmission fluid level using the dipstick.
• If low, add the appropriate type of transmission fluid (consult owner’s manual for specifications).
• If the fluid is dirty or burnt, proceed to change the fluid.
  • Drain old fluid into a pan and replace the transmission filter if applicable.
  • Refill with new fluid through the dipstick tube, ensuring proper level.

3. Inspect and Repair Wiring and Connectors

• Tools Required: Multimeter, wire brush
• Visually inspect the wiring harness for frays or breaks.
• Use a multimeter to check for continuity in the TCM wiring.
• Clean any corrosion from connectors using a wire brush; replace damaged wiring as necessary.

4. Replace or Reprogram TCM (if necessary)

• Tools Required: OBD-II scanner, appropriate torque tools
• If the TCM is faulty, remove it by disconnecting the wiring harness and unbolting it from its mounting.
• Install the new or reprogrammed TCM, ensuring all connections are secure.
• Use an OBD-II scanner to clear the P0700 code and recheck for any remaining codes.

5. Reconnect Battery and Test Drive

• Reconnect the battery and start the vehicle.
• Conduct a test drive to confirm that shifting is smooth and the check engine light does not reappear.