how to fix P0700 code on 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

555 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 system 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 components to avoid short circuits.
•Allow the vehicle to cool before working on the transmission to prevent burns.

Symptoms

•Check engine light illuminated
•Erratic shifting or slipping transmission
•Delayed engagement when shifting from park to drive
•Reduced fuel efficiency
•Transmission overheating

Diagnostic Steps

1
Scan the vehicle’s computer using an OBD-II scanner to retrieve any additional codes related to the transmission.
2
Inspect the transmission fluid level and condition; low or burnt fluid can indicate issues.
3
Check for any visible damage or loose connections in the wiring harness associated with the transmission control module.
4
Test the transmission control module (TCM) for proper voltage and ground using a multimeter.
5
Inspect the transmission filter for clogs or blockages.
6
Review the vehicle’s service history for any previous transmission repairs or fluid changes.

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
•Socket set
•Multimeter
•Transmission fluid pump
•Drain pan
•Screwdriver

Parts Required

•Transmission fluid (Mercon LV or equivalent)
•Transmission filter kit
•Gasket for transmission pan

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Diagnostic Steps

1
Scan the vehicle’s computer using an OBD-II scanner to retrieve any additional codes related to the transmission.
2
Inspect the transmission fluid level and condition; low or burnt fluid can indicate issues.
3
Check for any visible damage or loose connections in the wiring harness associated with the transmission control module.
4
Test the transmission control module (TCM) for proper voltage and ground using a multimeter.
5
Inspect the transmission filter for clogs or blockages.
6
Review the vehicle’s service history for any previous transmission repairs or fluid changes.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery cable to ensure safety.
Raise the vehicle using a jack and secure it on jack stands.

2. Fluid Change

Tools Required: Socket set, transmission fluid pump, drain pan.
Remove the transmission drain plug and allow the fluid to drain completely into the drain pan.
Replace the drain plug and torque it to manufacturer specifications (typically 10-15 lb-ft).
Using the transmission fluid pump, fill the transmission with the appropriate type of fluid as per manufacturer specifications (likely Mercon LV or equivalent).

3. Inspect and Replace Transmission Filter

Tools Required: Socket set, screwdriver, transmission filter kit.
Remove the transmission pan by loosening the bolts; expect fluid to spill, so have a drain pan ready.
Take out the old filter and replace it with a new one from the filter kit.
Clean the transmission pan and apply a new gasket to ensure a proper seal before reinstallation.

4. Check and Repair Wiring

Inspect the wiring harness leading to the TCM for any kinks, frays, or disconnections.
Repair or replace any damaged wiring as necessary.

5. Reconnect Battery and Clear Codes

Reconnect the negative battery cable.
Use the OBD-II scanner to clear the P0700 code and any other transmission-related codes.