how to fix the check engine light issue in Ford F-150 13th Generation (2015-2020)

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

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

541 words

Problem Statement

Learn how to diagnose and fix the check engine light issue in Ford F-150 (2015-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Engine

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to avoid short circuits.
•Allow the engine to cool before inspecting any components to prevent burns.

Symptoms

•Check engine light illuminated
•Rough idle when the engine is running
•Decreased fuel efficiency
•Engine stalling during acceleration
•Unusual engine noises (e.g., knocking or pinging)

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific trouble codes.
2
Inspect the gas cap for cracks or improper sealing, which can trigger the CEL.
3
Check engine oil and coolant levels to ensure they are within the proper range.
4
Examine the air filter for clogs or dirt that may affect engine performance.
5
Inspect exhaust components for leaks or damage.
6
Test the battery voltage and charging system to rule out electrical issues.

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
•Multimeter
•Screwdrivers
•Safety goggles

Parts Required

•New gas cap (if required)
•New air filter (if dirty)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific trouble codes.
2
Inspect the gas cap for cracks or improper sealing, which can trigger the CEL.
3
Check engine oil and coolant levels to ensure they are within the proper range.
4
Examine the air filter for clogs or dirt that may affect engine performance.
5
Inspect exhaust components for leaks or damage.
6
Test the battery voltage and charging system to rule out electrical issues.

Solution

1. Preparation

Gather tools: OBD-II scanner, socket set, torque wrench, multimeter, screwdrivers, and safety goggles.
Ensure the vehicle is parked on a level surface and the engine is turned off. Disconnect the negative battery terminal for safety.

2. Address Error Codes

Connect the OBD-II scanner to the vehicle’s diagnostic port.
Retrieve the stored error codes and document them for reference.
Research each code to determine possible causes and necessary repair actions.

3. Inspect and Repair Components

A. Gas Cap

Check the gas cap for damage or wear.
If damaged, replace the gas cap with a new one ensuring it is tightened properly.

B. Air Filter

Locate the air filter housing and remove the air filter.
Inspect for dirt and debris. If dirty, replace with a new air filter according to manufacturer specifications.

C. Exhaust System

Visually inspect the exhaust system for leaks or loose connections.
Tighten any loose bolts or replace damaged components such as gaskets or pipes.

4. Electrical System Check

Use a multimeter to check battery voltage; it should read between 12.4V to 12.7V for a fully charged battery.
Inspect battery terminals for corrosion and clean them if necessary.

5. Clear Codes and Test

After repairs, use the OBD-II scanner to clear the error codes.
Reconnect the negative battery terminal.
Start the engine and monitor if the check engine light remains off.