how to fix P0700 transmission 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

561 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 code in Ford F-150 (2015-2020). Step-by-step guide with symptoms, diagnostic steps, 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 or fluid systems.

Symptoms

•Check engine light illuminated
•Transmission slipping or erratic shifting
•Rough or harsh shifts
•Delayed engagement when shifting from park to drive
•Poor fuel economy
•Transmission overheating

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any additional transmission-related DTCs.
2
Inspect the transmission fluid level and condition; look for signs of contamination or burning.
3
Check the wiring harness and connectors for the transmission control module (TCM) for any signs of damage or corrosion.
4
Test the TCM for proper operation with a multimeter.
5
Look for any signs of mechanical failure in the transmission by performing a visual inspection.
6
Monitor the vehicle's performance during 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 pump
•Screwdrivers

Parts Required

•Transmission fluid (Ford Mercon LV)
•Transmission filter (if applicable)
•Gasket for transmission pan
•Transmission control module (if necessary)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any additional transmission-related DTCs.
2
Inspect the transmission fluid level and condition; look for signs of contamination or burning.
3
Check the wiring harness and connectors for the transmission control module (TCM) for any signs of damage or corrosion.
4
Test the TCM for proper operation with a multimeter.
5
Look for any signs of mechanical failure in the transmission by performing a visual inspection.
6
Monitor the vehicle's performance during a road test to replicate symptoms.

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

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

3. Inspect and Repair Wiring

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

4. Test and Replace TCM (if necessary)

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

5. Reassemble and Refill

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