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

Ford Explorer Fifth Generation (2011-2019)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

503 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

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool down before performing any inspections or repairs.

Symptoms

•Check engine light illuminated
•Engine running rough or misfiring
•Decreased fuel efficiency
•Unusual smells (e.g., fuel or burning)
•Engine stalling or hesitating during acceleration
•Increased emissions

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific issues.
2
Inspect the gas cap for proper sealing and cracks, as a loose or damaged cap can trigger the check engine light.
3
Check engine oil and coolant levels to ensure they are within recommended ranges.
4
Examine battery connections and voltage using a multimeter for signs of electrical issues.
5
Inspect ignition components (spark plugs, coils) for wear or damage.
6
Check for vacuum leaks in hoses and intake manifold.

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
•Vacuum gauge

Parts Required

•Spark plugs (if worn)
•Ignition coils (if faulty)
•Replacement gas cap (if damaged)
•Vacuum hoses (if cracked or leaking)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific issues.
2
Inspect the gas cap for proper sealing and cracks, as a loose or damaged cap can trigger the check engine light.
3
Check engine oil and coolant levels to ensure they are within recommended ranges.
4
Examine battery connections and voltage using a multimeter for signs of electrical issues.
5
Inspect ignition components (spark plugs, coils) for wear or damage.
6
Check for vacuum leaks in hoses and intake manifold.

Solution

1. Preparation

Tools Required: OBD-II scanner, socket set, multimeter, vacuum gauge.
Ensure the vehicle is parked on a flat surface and the engine is off before starting repairs.

2. Address Fault Codes

Connect the OBD-II scanner to the vehicle’s diagnostic port.
Record any fault codes and refer to the service manual for code definitions.
Clear the codes and perform a test drive to see if they return.

3. Inspect and Replace Components

Gas Cap:
- Remove the gas cap and inspect for damage; replace if necessary.
- Ensure it clicks securely when reinstalled.
Ignition System:
- Remove spark plugs and inspect for wear; replace if they are worn out or fouled.
- Check ignition coils for proper function using a multimeter; replace any faulty coils.

4. Check for Vacuum Leaks

Inspect Hoses:
- Visually inspect vacuum hoses for cracks or disconnections.
- Use a vacuum gauge to test for leaks; replace damaged hoses as needed.

5. Electrical System Check

Inspect and clean battery terminals and connections.
Test the battery voltage; replace the battery if it is below 12.4 volts while the engine is off.