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

522 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 checking or adding transmission fluid.

Symptoms

•Check engine light illuminated
•Rough shifting or delayed engagement
•Loss of power during acceleration
•Transmission slipping or erratic behavior
•Poor fuel economy
•Transmission fails to enter certain gears

Diagnostic Steps

1
Scan the vehicle's OBD-II system for error codes and note any additional codes related to the transmission.
2
Inspect transmission fluid level and condition, checking for discoloration or burnt smell.
3
Examine the wiring and connectors for the transmission control module for signs of damage or corrosion.
4
Perform a visual inspection of the transmission for any leaks or physical damage.
5
Check for proper operation of the vehicle speed sensor and input/output speed sensors.
6
Test the TCM using a multimeter to ensure it is receiving proper voltage and ground.

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

Parts Required

•Transmission fluid
•Transmission filter (if applicable)
•Transmission control module (if found faulty)
•Input/output speed sensors (if diagnosed as faulty)

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Diagnostic Steps

1
Scan the vehicle's OBD-II system for error codes and note any additional codes related to the transmission.
2
Inspect transmission fluid level and condition, checking for discoloration or burnt smell.
3
Examine the wiring and connectors for the transmission control module for signs of damage or corrosion.
4
Perform a visual inspection of the transmission for any leaks or physical damage.
5
Check for proper operation of the vehicle speed sensor and input/output speed sensors.
6
Test the TCM using a multimeter to ensure it is receiving proper voltage and ground.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, socket set, torque wrench, transmission fluid.
Ensure the vehicle is parked on a level surface, and the engine is off. Disconnect the battery before proceeding with electrical work.

2. Check Transmission Fluid

Remove the transmission dipstick and inspect the fluid.
- Sub-steps:
  - If fluid is low, add the correct type of transmission fluid (consult the owner's manual for specifications).
  - If fluid is dirty or burnt, proceed to replace the transmission fluid and filter.

3. Inspect and Repair Wiring

Examine the wiring harness connected to the TCM.
- Sub-steps:
  - Repair any damaged wires or replace connectors if corroded.
  - Ensure all connections are secure and free from debris.

4. Replace Faulty Components

If diagnostic steps indicate a faulty TCM or sensors, replace them.
- Sub-steps:
  - Remove the old TCM or sensor by unscrewing it and disconnecting the wiring harness.
  - Install the new TCM or sensor, ensuring proper alignment and secure connections.
  - Torque bolts to manufacturer specifications (refer to service manual).

5. Reset the TCM

After making repairs, reset the TCM and clear any stored codes.
- Sub-steps:
  - Use an OBD-II scanner to clear the P0700 code.
  - Reconnect the battery.