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

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is turned off.
• Disconnect the battery to prevent electrical shorts.

2. Transmission Fluid Service

1. Check Fluid Level:
   • Remove the transmission dipstick and wipe it clean. Reinsert and remove to check the level.
   • Add the appropriate type of transmission fluid (e.g., Mercon LV) if low.
2. Change the Fluid:
   • Drain the old transmission fluid by removing the drain plug.
   • Replace the transmission filter if applicable.
   • Refill the transmission with new fluid through the dipstick tube.

3. Inspect and Repair Wiring/Connectors

1. Visual Inspection:
   • Examine the wiring harness leading to the TCM and transmission solenoids for damage.
2. Repair or Replace:
   • Repair any damaged wires or replace connectors as necessary.

4. Test and Replace Transmission Control Module (if necessary)

1. Testing:
   • Using a multimeter, check the voltage and ground signals to and from the TCM.
2. Replacement:
   • If the TCM is faulty, remove it by disconnecting the electrical connectors and unbolting it.
   • Install the new TCM and reconnect all electrical connectors.

5. Clear Codes and Test Drive

1. Code Clearance:
   • Use the OBD-II scanner to clear the P0700 code and any other related codes.
2. Test Drive:
   • Take the vehicle for a test drive to ensure proper operation and shifting.