why does my Ford Explorer Fifth Generation (2011-2019) check engine light keep coming on?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

523 words

Problem Statement

Learn how to diagnose and fix the check engine light issue in Ford Explorer Fifth Generation (2011-2019). Step-by-step guide with symptoms and solutions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components.
•Allow the engine to cool before inspecting or repairing components to avoid burns.

Symptoms

•Check engine light illuminated
•Rough engine idle or stalling
•Decreased fuel efficiency
•Unusual engine noises (knocking or pinging)
•Poor acceleration or loss of power
•Increased emissions or failed emissions test

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific trouble codes.
2
Inspect the gas cap for proper sealing and any signs of damage or wear.
3
Check for any visible vacuum leaks in hoses connected to the intake manifold.
4
Test the battery voltage and condition, ensuring it is within specifications.
5
Examine the spark plugs for wear, damage, or incorrect gap settings.
6
Inspect the fuel system, including fuel pressure and the condition of the fuel filter.

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
•Multimeter
•Torque wrench
•Fuel pressure gauge

Parts Required

•Gas cap (if damaged)
•Spark plugs (if worn or damaged)
•Vacuum hoses (if cracked or damaged)
•Fuel filter (if 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 gas cap for proper sealing and any signs of damage or wear.
3
Check for any visible vacuum leaks in hoses connected to the intake manifold.
4
Test the battery voltage and condition, ensuring it is within specifications.
5
Examine the spark plugs for wear, damage, or incorrect gap settings.
6
Inspect the fuel system, including fuel pressure and the condition of the fuel filter.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the battery to ensure safety during repairs.
Tools Required: OBD-II scanner, socket set, multimeter, torque wrench.

2. Address Error Codes

After scanning for error codes, note the codes and refer to a repair manual for specific troubleshooting based on the codes retrieved.
Clear the codes using the OBD-II scanner and take the vehicle for a test drive to see if the light returns.

3. Inspect and Replace Components

Gas Cap: If the gas cap is damaged, replace it with a new one. Ensure it clicks securely when closed.
Spark Plugs: Remove and inspect the spark plugs. Replace any that are worn or damaged. Use the correct gap settings as specified in the vehicle's manual.
Vacuum Hoses: Inspect all vacuum hoses for cracks or loose connections. Replace any damaged hoses.

4. Fuel System Check

Use a fuel pressure gauge to check the fuel pressure at the rail. Compare with specifications.
If the fuel filter is clogged, replace it according to the manufacturer’s recommendations.

5. Reassemble and Test

Reconnect the battery after all repairs.
Start the engine and verify all repairs were successful.
Monitor the system for any recurrence of the check engine light.