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

528 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 diagnostic procedures and repair instructions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before opening any components.

Symptoms

•Check engine light illuminated
•Rough idle or engine stalling
•Decreased fuel efficiency
•Poor acceleration or loss of power
•Unusual noises from the engine
•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 tightness or damage, as a loose cap can trigger the check engine light.
3
Check engine oil and coolant levels to ensure they are within specifications.
4
Visual inspection of all vacuum hoses for cracks or disconnections.
5
Test the battery and alternator to ensure proper voltage and charging.
6
Inspect the mass air flow (MAF) sensor and throttle body for cleanliness and functionality.
7
Review recent maintenance history to identify any changes that may have contributed to the issue.

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
•Cleaning supplies

Parts Required

•Gas cap (if damaged)
•Vacuum hoses (if cracked)
•MAF sensor (if faulty)
•Spark plugs (if worn)
•Engine oil and oil filter (if low or dirty)

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 tightness or damage, as a loose cap can trigger the check engine light.
3
Check engine oil and coolant levels to ensure they are within specifications.
4
Visual inspection of all vacuum hoses for cracks or disconnections.
5
Test the battery and alternator to ensure proper voltage and charging.
6
Inspect the mass air flow (MAF) sensor and throttle body for cleanliness and functionality.
7
Review recent maintenance history to identify any changes that may have contributed to the issue.

Solution

1. Preparation

Gather tools and parts needed for repairs.
Tools Required: OBD-II scanner, socket set, multimeter, vacuum gauge, cleaning supplies.
Safety Warnings: Disconnect the battery before working on electrical systems.

2. Address Fault Codes

Use the OBD-II scanner to read and document any fault codes.
Research each code for specific repair instructions.

3. Inspect and Replace Components

Gas Cap: If the code indicates an issue with the fuel system, inspect and replace the gas cap if damaged or loose.
Vacuum Hoses: Replace any cracked or disconnected hoses.
MAF Sensor: Clean the MAF sensor with a dedicated cleaner. If malfunctioning, replace it.

4. Engine Maintenance

Change engine oil and replace the oil filter if the oil is low or dirty.
Check the air filter and replace it if it is clogged.
Inspect and replace spark plugs if they show signs of wear or fouling.

5. Test and Reset

After repairs, reconnect the battery and use the OBD-II scanner to clear the error codes.
Start the engine to ensure that the check engine light does not reappear.