how to fix P0700 transmission code in Ford F-150 Fourteenth Generation (2021-present)

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, multimeter, transmission fluid gauge, fluid catch pan.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool before starting any work.

2. Address Transmission Fluid Issues

• Sub-steps:
  1. Remove the transmission fluid dipstick and check fluid level.
  2. If low, add the appropriate transmission fluid as specified in the owner's manual.
  3. If the fluid is contaminated or burnt, proceed to change the transmission fluid.
  4. To change fluid, remove the drain plug or pan to drain old fluid into the catch pan.
  5. Replace the transmission filter if applicable.

3. Inspect Wiring and Connectors

• Sub-steps:
  1. Visually inspect the wiring harness connected to the TCM and transmission for fraying or damage.
  2. Use a multimeter to check for continuity in the wiring.
  3. Clean any corrosion from connectors and ensure a tight connection.
  4. Replace any damaged wiring or connectors as necessary.

4. Test and Replace TCM/Sensors (if needed)

• Sub-steps:
  1. If previous steps do not resolve the issue, test the TCM for faults using diagnostic equipment.
  2. If the TCM is found to be faulty, remove the TCM by unscrewing the mounting bolts and disconnecting the harness.
  3. Install a new TCM, ensuring it is secured and connected properly.
  4. Clear all error codes using the OBD-II scanner.