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

519 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 performing any inspections or repairs.

Symptoms

•Check engine light illuminated
•Rough idle or stalling
•Decreased fuel efficiency
•Unusual engine noises
•Increased emissions
•Loss of power during acceleration

Diagnostic Steps

1
Scan the vehicle's OBD-II system for error codes using a diagnostic scanner.
2
Record the retrieved error codes and look up their meanings.
3
Inspect the gas cap for proper sealing and any signs of damage.
4
Check engine oil and coolant levels to ensure they are within recommended ranges.
5
Visually inspect the engine bay for any loose or damaged hoses and electrical connections.
6
Test the battery voltage and charging system to rule out electrical issues.

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
•Safety glasses

Parts Required

•Gas cap (if damaged)
•O2 sensor or MAF sensor (if indicated by codes)
•Vacuum hoses (if damaged)

Related Faults

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Diagnostic Steps

1
Scan the vehicle's OBD-II system for error codes using a diagnostic scanner.
2
Record the retrieved error codes and look up their meanings.
3
Inspect the gas cap for proper sealing and any signs of damage.
4
Check engine oil and coolant levels to ensure they are within recommended ranges.
5
Visually inspect the engine bay for any loose or damaged hoses and electrical connections.
6
Test the battery voltage and charging system to rule out electrical issues.

Solution

1. Preparation

Gather tools: OBD-II scanner, socket set, multimeter, torque wrench, and safety glasses.
Ensure the vehicle is parked on a level surface with the engine off and keys removed.

2. Addressing Error Codes

Use the OBD-II scanner to read and document error codes.
Clear the codes and take the vehicle for a test drive to see if they return.
If the same codes return, proceed with specific repairs based on the identified codes (e.g., replace faulty sensors, repair wiring).

3. Inspect and Replace Components

Gas Cap Replacement:
- Remove the gas cap and inspect for damage or wear.
- If damaged, replace with a new gas cap ensuring it clicks securely.
Sensor Replacement (e.g., O2 Sensor or MAF Sensor):
- Disconnect the battery to prevent electrical shorts.
- Locate the faulty sensor as per the error code documentation.
- Remove the sensor using a socket set and replace it with a new one.
- Reconnect the battery.
Vacuum Leak Repair:
- Inspect vacuum lines for cracks or disconnections.
- Replace any damaged hoses with new ones and ensure all connections are tight.

4. Final Checks

Re-scan the vehicle with the OBD-II scanner to confirm that no new codes have appeared.
Perform a visual inspection of the engine bay to ensure all components are secure.