why does my Ford F-150 13th Generation (2015-2020) have a check engine light and low power

Ford F-150 13th Generation (2015-2020)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

518 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

Diagnose and fix check engine light and low power issues in Ford F-150 (2015-2020). Step-by-step guide with symptoms, diagnostics, and solutions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Allow the engine to cool before inspecting the exhaust system.

Symptoms

•Check engine light illuminated
•Engine hesitates during acceleration
•Reduced throttle response
•Poor fuel economy
•Rough idle or stalling at low speeds

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific trouble codes.
2
Inspect the vehicle’s air intake system for blockages or leaks.
3
Check the condition and connections of the throttle position sensor (TPS).
4
Verify fuel pressure using a fuel pressure gauge to check for fuel delivery issues.
5
Inspect the exhaust system for restrictions, such as a clogged catalytic converter.
6
Examine the ignition system components, including spark plugs and coils, for wear or damage.

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
•Fuel pressure gauge
•Socket set
•Screwdrivers
•Multimeter

Parts Required

•Air filter
•Throttle position sensor (if replacement is needed)
•Fuel pump (if diagnosed as faulty)
•Catalytic converter (if diagnosed as clogged)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific trouble codes.
2
Inspect the vehicle’s air intake system for blockages or leaks.
3
Check the condition and connections of the throttle position sensor (TPS).
4
Verify fuel pressure using a fuel pressure gauge to check for fuel delivery issues.
5
Inspect the exhaust system for restrictions, such as a clogged catalytic converter.
6
Examine the ignition system components, including spark plugs and coils, for wear or damage.

Solution

1. Preparation

Ensure the vehicle is parked on a level surface.
Disconnect the battery to prevent electrical shorts during repairs.
Gather necessary tools and parts prior to starting the repair.

2. Address Fault Codes

Use the OBD-II scanner to retrieve and note the trouble codes.
Clear the fault codes and perform a test drive to see if they reappear.

3. Inspect and Replace Air Filter

Remove the air filter housing cover.
Inspect the air filter for dirt or blockages.
Replace with a new air filter if necessary.

4. Throttle Position Sensor (TPS) Inspection

Locate the TPS on the throttle body.
Disconnect the electrical connector and remove the TPS.
Inspect for dirt or damage; clean or replace as needed.
Reinstall and reconnect the TPS.

5. Fuel System Check

Connect a fuel pressure gauge to the fuel rail.
Turn on the ignition (do not start the engine) to check fuel pressure.
If pressure is low, inspect the fuel pump and replace if faulty.

6. Check Exhaust System

Inspect the exhaust system for any visible damage or restrictions.
If a clogged catalytic converter is suspected, conduct a backpressure test.
Replace the catalytic converter if it is indeed clogged.