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

532 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

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.

Symptoms

•Check engine light illuminated
•Decreased engine performance or power loss
•Poor fuel economy
•Rough idling or stalling
•Unusual engine noises
•Increased emissions

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific issues.
2
Inspect the gas cap for cracks or improper sealing, which can lead to evaporative emissions issues.
3
Check the engine oil level and condition, ensuring it is within the manufacturer's specifications.
4
Examine the air filter for blockage or dirt that could affect air intake.
5
Inspect for vacuum leaks in hoses that connect to the intake manifold.
6
Assess the battery voltage and connections to ensure proper electrical supply to engine components.

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
•Multimeter
•Socket set
•Torque wrench

Parts Required

•Gas cap (if defective)
•Air filter (if dirty)
•Engine oil and filter (if needed)
•Vacuum hoses (if damaged)

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 cracks or improper sealing, which can lead to evaporative emissions issues.
3
Check the engine oil level and condition, ensuring it is within the manufacturer's specifications.
4
Examine the air filter for blockage or dirt that could affect air intake.
5
Inspect for vacuum leaks in hoses that connect to the intake manifold.
6
Assess the battery voltage and connections to ensure proper electrical supply to engine components.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Addressing Error Codes

Sub-step 1: Reconnect the OBD-II scanner and review the stored error codes.
Sub-step 2: Research each code to determine the associated component or system.
Sub-step 3: Clear the error codes and test drive the vehicle to see which codes reappear.

3. Inspect and Replace Components

Sub-step 1: If the gas cap is faulty, replace it with a new OEM or quality aftermarket cap.
Sub-step 2: Replace the air filter if it is dirty or clogged.
Sub-step 3: If vacuum leaks are suspected, replace damaged hoses or gaskets as necessary.
Sub-step 4: If engine oil is low or dirty, perform an oil change using the recommended oil type and filter.

4. Electrical Checks

Sub-step 1: Inspect battery connections for corrosion or looseness; clean and tighten as needed.
Sub-step 2: Use a multimeter to test the battery voltage; ensure it is approximately 12.6 volts when the vehicle is off and 13.7 to 14.7 volts when running.