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

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Ensure the vehicle is on a flat surface and secure it with wheel chocks.

2. Fluid Check and Replacement

1. Check Fluid Level

   • Remove the transmission dipstick and wipe it clean.
   • Reinsert and remove the dipstick again to check the fluid level.
   • If low, add the recommended ATF type as per the owner’s manual.

2. Fluid Change (if needed)

   • Place a drain pan under the transmission.
   • Remove the transmission pan bolts and lower the pan carefully, allowing old fluid to drain.
   • Replace the transmission filter and clean the mating surfaces.
   • Reinstall the pan and torque the bolts to the specified value (typically around 12-16 ft-lbs).

3. Wiring and Sensor Repair

1. Inspect Wiring

   • Visually inspect the wiring harness leading to the TCM and transmission for any signs of wear, fraying, or corrosion.
   • Repair or replace damaged wires and connectors as necessary.

2. Replace Transmission Range Sensor

   • Disconnect the electrical connector from the transmission range sensor.
   • Remove the mounting bolts and carefully take out the sensor.
   • Install the new sensor and reconnect the electrical connector.

4. TCM Testing and Replacement (if faulty)

1. Test TCM

   • Use a multimeter to check voltage at the TCM connectors.
   • If readings are outside the specifications, consider replacing the TCM.

2. Replace TCM

   • Disconnect the battery again.
   • Remove any mounting brackets or screws holding the TCM in place.
   • Install the new TCM and reconnect all wiring.
   • Reconnect the battery.