how to diagnose EPS problems 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

3 min read

592 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 EPS problems in Ford F-150 13th Generation (2015-2020). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Steering

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Allow the vehicle to cool before performing any inspections on the steering system.

Symptoms

•Steering feels heavy or unresponsive
•Steering wheel vibration at certain speeds
•Check power steering warning light illuminated
•Unusual noises when turning the steering wheel
•Difficulty maintaining a straight line while driving

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any EPS-related fault codes.
2
Inspect the power steering fluid level and condition; ensure it is within the recommended range and free from contamination.
3
Visually inspect the EPS motor and wiring for signs of damage, corrosion, or loose connections.
4
Check the steering angle sensor for proper alignment and functionality; verify it is calibrated correctly.
5
Test the EPS system by turning the steering wheel and observing the response; note any irregularities in assist level.
6
Inspect the vehicle battery and charging system, as low voltage can affect EPS performance.

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
•Torque wrench
•Electrical contact cleaner
•Power steering fluid

Parts Required

•Power steering fluid
•EPS motor (if replacement is needed)

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 check for any EPS-related fault codes.
2
Inspect the power steering fluid level and condition; ensure it is within the recommended range and free from contamination.
3
Visually inspect the EPS motor and wiring for signs of damage, corrosion, or loose connections.
4
Check the steering angle sensor for proper alignment and functionality; verify it is calibrated correctly.
5
Test the EPS system by turning the steering wheel and observing the response; note any irregularities in assist level.
6
Inspect the vehicle battery and charging system, as low voltage can affect EPS performance.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Fluid Check and Replacement

Remove the power steering fluid reservoir cap.
Check fluid level; if low, top off with recommended power steering fluid (consult owner’s manual for specifications).
If fluid is contaminated, drain and replace it:
- Locate the return line from the EPS pump and disconnect it.
- Use a clean container to catch old fluid and replace it with new fluid.
- Reconnect the return line and ensure it is secure.

3. Inspect and Clean Connections

Remove the EPS motor connector by pressing the release tab and pulling it off.
Inspect the terminals for corrosion or damage; clean with electrical contact cleaner if necessary.
Reconnect the EPS motor connector securely.

4. Steering Angle Sensor Calibration

Use a scan tool capable of performing steering angle sensor calibration.
Follow the tool’s prompts to recalibrate the sensor.
Clear any codes and test the steering system afterward.

5. Replace EPS Motor (if necessary)

If diagnostics indicate a faulty EPS motor:
- Remove the steering column covers to access the EPS motor.
- Disconnect the electrical connector and any mounting bolts securing the motor.
- Carefully remove the motor from its housing.
- Install the new EPS motor by reversing the removal steps.
- Reconnect the electrical connections and secure all components.