how to diagnose P0700 code in Ford F-150 13th Generation (2015-2020)

Ford F-150 13th Generation (2015-2020)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

Error Code: P0700

3 min read

547 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix P0700 transmission control malfunction in Ford F-150 (2015-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Error Code

P0700

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems
•Allow the engine to cool before opening the transmission fluid pan

Symptoms

•Check engine light illuminated
•Erratic shifting or inability to shift gears
•Transmission slipping or engaging harshly
•Poor acceleration or loss of power
•Transmission overheating
•Unusual noises from the transmission

Diagnostic Steps

1
Scan for error codes using OBD-II scanner
2
Inspect transmission fluid level and condition
3
Check wiring and connectors to the TCM for damage or corrosion
4
Examine transmission for leaks, damage, or signs of wear
5
Test TCM functionality with a multimeter
6
Perform a road test to replicate symptoms

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Multimeter
•Socket set
•Torque wrench
•Transmission fluid
•Funnel
•Jack stands

Parts Required

•Transmission fluid
•Transmission filter (if applicable)
•Transmission pan gasket
•TCM (if replacement is needed)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, socket set, torque wrench, transmission fluid, funnel, jack stands.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Transmission Fluid

Sub-steps:
1. Lift the vehicle securely using jack stands.
2. Remove the transmission pan (if necessary) using a socket set.
3. Drain the old transmission fluid into a suitable container.
4. Replace the transmission filter if applicable.
5. Reinstall the transmission pan with a new gasket, torquing bolts to manufacturer specifications.
6. Refill the transmission with new fluid using a funnel.

3. Repair or Replace Defective Components

Sub-steps:
1. If any wiring or connectors were found damaged during inspection, repair or replace them.
2. If the TCM is faulty, remove it (usually secured with bolts) and replace it with a new unit, ensuring to reconnect all harness connectors.
3. If internal transmission components are failing, consult a professional for a rebuild or replacement.

4. Clear Codes and Reset System

Sub-steps:
1. Reconnect the negative battery terminal.
2. Use the OBD-II scanner to clear the P0700 code and any other related codes.