how to fix transmission codes P0700 and P0725 on Ford F-150 12th Generation (2009-2014)

Ford F-150 12th Generation (2009-2014)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

Error Code: P0700, P0725

3 min read

529 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 and P0725 transmission issues in Ford F-150 (2009-2014). Step-by-step guide with tools and procedures.

Error Code

P0700, P0725

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 pan.

Symptoms

•Check engine light illuminated
•Erratic or harsh shifting
•Transmission slipping or failure to engage
•Reduced engine performance
•Increased fuel consumption

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to confirm P0700 and P0725.
2
Inspect the wiring and connectors for the transmission control module (TCM) and the engine speed sensor.
3
Check the transmission fluid level and condition.
4
Test the engine speed sensor with a multimeter for proper voltage and resistance.
5
Inspect the TCM for any visible damage or corrosion.
6
Verify the ground connections for the TCM and engine speed sensor.

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
•Wire strippers
•Fluid pump

Parts Required

•Engine speed sensor
•Transmission fluid

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to confirm P0700 and P0725.
2
Inspect the wiring and connectors for the transmission control module (TCM) and the engine speed sensor.
3
Check the transmission fluid level and condition.
4
Test the engine speed sensor with a multimeter for proper voltage and resistance.
5
Inspect the TCM for any visible damage or corrosion.
6
Verify the ground connections for the TCM and engine speed sensor.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery to ensure safety while working on electrical components.
Elevate the vehicle if necessary for better access to the transmission.

2. Inspect and Repair Wiring/Connectors

Tools Required: Wire strippers, electrical tape, multimeter
- Inspect the wiring harnesses to the TCM and engine speed sensor for any frays or breaks.
- Repair any damaged wires using appropriate splicing techniques and cover with electrical tape.

3. Replace Engine Speed Sensor

Tools Required: Socket set, torque wrench
- Locate the engine speed sensor on the transmission.
- Disconnect the electrical connector from the sensor.
- Remove the mounting bolts using a socket set.
- Install the new engine speed sensor and torque the bolts to manufacturer specifications (typically 10-15 ft-lbs).
- Reconnect the electrical connector.

4. Transmission Fluid Check and Replacement

Tools Required: Fluid pump, socket set, transmission fluid (use manufacturer-recommended type)
- Remove the transmission pan if necessary to access the fluid.
- Check the fluid level and condition; if it appears burnt or dirty, replace it.
- If replacing, drain the old fluid completely and refill with new transmission fluid using a fluid pump until the correct level is achieved.

5. Reconnect Battery and Clear Codes

Reconnect the battery terminals after completing repairs.
Use the OBD-II scanner to clear the trouble codes from the system.