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

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

Error Codes

1-3 hours

Time

medium

Difficulty

high

Severity

3 min read

578 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 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 prevent short circuits.
•Allow the engine to cool before performing any repairs to avoid burns.

Symptoms

•Check Engine Light illuminated on the dashboard
•Reduced engine performance or power
•Rough idling or stalling at low speeds
•Increased fuel consumption
•Unusual noises from the engine compartment
•Emission test failure

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific trouble codes.
2
Inspect the gas cap for damage or loose fit, as this can trigger the CEL.
3
Check engine oil level and condition; low oil can cause engine performance issues.
4
Examine the air filter for clogs or restrictions that could affect airflow.
5
Inspect the exhaust system for leaks or blockages that may cause emissions issues.
6
Check battery voltage and connections, as electrical problems can trigger the light.

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
•Screwdrivers
•Multimeter
•Torque wrench
•Safety gloves

Parts Required

•OEM gas cap (if applicable)
•Engine oil (SAE 5W-30 or as specified)
•Air filter (specific to F-150)
•Exhaust components (if repairs are necessary)

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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 damage or loose fit, as this can trigger the CEL.
3
Check engine oil level and condition; low oil can cause engine performance issues.
4
Examine the air filter for clogs or restrictions that could affect airflow.
5
Inspect the exhaust system for leaks or blockages that may cause emissions issues.
6
Check battery voltage and connections, as electrical problems can trigger the light.

Solution

1. Preparation

Gather tools and parts before starting the repair.
Disconnect the negative battery terminal to ensure safety while working on the vehicle.
Tools Required: OBD-II scanner, socket set, screwdrivers, multimeter, and safety gloves.

2. Address Error Codes

Sub-step 1: Use the OBD-II scanner to read and record the error codes.
Sub-step 2: Research the codes to determine the potential issues and necessary repairs.
Sub-step 3: Clear the codes using the scanner and observe if they return after driving the vehicle.

3. Inspect and Repair Components

Sub-step 1: If the gas cap was loose or damaged, replace it with an OEM gas cap.
Sub-step 2: If oil level is low, top off with the recommended engine oil type (e.g., SAE 5W-30).
Sub-step 3: Replace the air filter if it is dirty or clogged, ensuring the correct fit for the F-150.
Sub-step 4: For any exhaust leaks found, repair or replace damaged sections of the exhaust system.
Sub-step 5: Check battery voltage using a multimeter; replace the battery if voltage is below the acceptable range (usually <12.4V).

4. Reassemble and Finalize

Reconnect the negative battery terminal.
Start the engine and allow it to idle, observing for any abnormal sounds or behavior.
Tools Required: Torque wrench (if applicable for bolts), replacement parts as needed.