how to fix transmission codes P0715 to P0799 on Ford F-150 14th Generation (2021-2024)

Step-by-step guide to diagnose and fix transmission codes P0715 to P0799 on Ford F-150 14th Generation. Learn symptoms, diagnostic steps, and repair procedures.

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Raise the vehicle safely using jack stands if needed.

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Remove the transmission pan using a socket set; drain the old fluid into a suitable container.
  2. Inspect the transmission filter; replace it if it is clogged or damaged.
  3. Reinstall the pan with a new gasket and torque the bolts to the manufacturer’s specifications (typically around 8-10 ft-lbs).
  4. Fill the transmission with the appropriate type of fluid (consult owner’s manual for specifications).

3. Replace Transmission Fluid Temperature Sensor

• Sub-steps:
  1. Locate the transmission fluid temperature sensor on the transmission body.
  2. Disconnect the electrical connector and unscrew the sensor using a wrench.
  3. Install the new sensor, ensuring it is torqued to manufacturer specifications (usually 10-15 ft-lbs).
  4. Reconnect the electrical connector.

4. Replace Range Sensor (if necessary)

• Sub-steps:
  1. Locate the range sensor attached to the transmission.
  2. Disconnect the connector and remove the mounting bolts using a socket set.
  3. Install the new range sensor and secure it with the mounting bolts, torqued to specifications.
  4. Reconnect the electrical connector.

5. Reconnect Battery and Clear Codes

• Sub-steps:
  1. Reconnect the negative battery terminal.
  2. Use the OBD-II scanner to clear any stored trouble codes.
  3. Perform a test drive to ensure that the transmission operates smoothly and that no new codes are set.