how to fix P0700 transmission code in Ford F-150 13th Generation (2015-2020)

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, socket set, torque wrench
• Gather replacement parts if necessary.
• Ensure the vehicle is on a level surface and safely secured.

2. Transmission Fluid Check and Replacement

• Sub-steps:
  1. Locate the transmission dipstick (if equipped) and remove it; wipe it clean.
  2. Reinsert the dipstick and remove it again to check the fluid level. If low, add the appropriate type of transmission fluid (consult owner's manual).
  3. If the fluid is dark or smells burnt, drain the fluid using a transmission drain plug and replace it.
  4. Refill the transmission with new fluid through the dipstick tube, ensuring it’s at the correct level.

3. Inspect and Repair Wiring/Connectors

• Sub-steps:
  1. Disconnect the battery to avoid any electrical shorts.
  2. Remove the protective cover of the wiring harness connected to the TCM.
  3. Visually inspect for physical damage, corrosion, or loose connections.
  4. Repair or replace damaged wiring or connectors as needed.
  5. Reconnect the battery and clear the P0700 code using the OBD-II scanner.

4. TCM Testing and Replacement

• Sub-steps:
  1. Use a multimeter to check voltage and ground at the TCM connector.
  2. If readings are incorrect, diagnose further for wiring issues leading to the TCM.
  3. If the TCM is faulty, remove the old module by unscrewing it from its mounting points.
  4. Install the new TCM, ensuring all connectors are securely attached.
  5. Reconnect the battery and clear any trouble codes.