how do I fix the check engine light on my 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

522 words

Problem Statement

Learn how to diagnose and fix the check engine light issue on your Ford F-150 13th Generation (2015-2020). Step-by-step guide with tools and parts required.

Affected Component

Engine

Estimated Time

1-3 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 hood or working on components.

Symptoms

•Check engine light illuminated
•Rough idle or stalling
•Decreased fuel efficiency
•Engine misfires or hesitations during acceleration
•Unusual noises from the engine compartment
•Increased emissions

Diagnostic Steps

1
Scan the vehicle's onboard computer for error codes using an OBD-II scanner.
2
Record any trouble codes that are present and research their meanings.
3
Inspect the vehicle's gas cap for damage or improper sealing.
4
Check the engine's air filter for clogs or excessive dirt.
5
Examine the spark plugs and ignition coils for wear or damage.
6
Inspect vacuum lines for leaks or disconnections.

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
•Screwdrivers
•Smoke machine (optional)

Parts Required

•New gas cap (if necessary)
•Air filter
•Spark plugs (if necessary)
•Ignition coils (if necessary)

Related Faults

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Diagnostic Steps

1
Scan the vehicle's onboard computer for error codes using an OBD-II scanner.
2
Record any trouble codes that are present and research their meanings.
3
Inspect the vehicle's gas cap for damage or improper sealing.
4
Check the engine's air filter for clogs or excessive dirt.
5
Examine the spark plugs and ignition coils for wear or damage.
6
Inspect vacuum lines for leaks or disconnections.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the negative battery terminal to prevent electrical shorts.
Allow the engine to cool down before starting work.

2. Address Fault Codes

Sub-step 1: Refer to the OBD-II scanner readings and identify the specific trouble codes.
Sub-step 2: Research the fault codes to determine the components that need inspection or replacement.

3. Inspect and Replace Components

Sub-step 1: If the gas cap is faulty, replace it with a new one that meets OEM specifications.
Sub-step 2: If the air filter is dirty, remove the old filter and install a new, clean air filter.
Sub-step 3: Remove spark plugs using a socket wrench, inspect for wear, and replace if necessary. Torque new spark plugs to the manufacturer’s specifications (typically around 13-15 lb-ft).
Sub-step 4: Check ignition coils for proper function; replace any faulty coils with OEM parts.

4. Check for Vacuum Leaks

Sub-step 1: Inspect vacuum lines visually and replace any that are cracked or disconnected.
Sub-step 2: Use a smoke machine to detect hard-to-find leaks if necessary.

5. Reconnect Battery and Clear Codes

Reconnect the negative battery terminal.
Use the OBD-II scanner to clear any fault codes from the computer.