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

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the battery to ensure safety during repairs.
• Allow the vehicle to cool down if the engine has been running.

2. Check and Replace Transmission Fluid

1. Locate the transmission dipstick and remove it.
2. Check the fluid level; add fluid if low using the recommended type (Ford Mercon LV).
3. If the fluid is dark or smells burnt, proceed to drain and replace it.
4. To drain, remove the transmission pan bolts and carefully lower the pan to allow fluid to drain completely.
5. Clean the transmission pan and replace the filter if necessary.

3. Inspect and Repair Wiring

1. Examine the wiring harness leading to the TCM for any frayed or damaged wires.
2. Repair or replace any damaged sections of wiring.
3. Ensure all connectors are secure and free of corrosion.

4. Test and Replace TCM (if necessary)

1. Using a multimeter, check the voltage and ground at the TCM connector.
2. If the readings are out of specification, replace the TCM.
3. Install the new TCM and ensure all connections are properly secured.

5. Reassemble and Refill

1. Reattach the transmission pan with a new gasket, tightening bolts to the manufacturer’s torque specs (typically 10-12 ft-lbs).
2. Refill the transmission with the correct fluid through the dipstick tube.
3. Reconnect the battery.