why is my Ford Explorer Fifth Generation (2011-2019) check engine light on after an oil change

Ford Explorer Fifth Generation (2011-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

489 words

Problem Statement

Learn how to diagnose and fix the check engine light issue after an oil change in a Ford Explorer (2011-2019). Step-by-step guide with diagnostic procedures.

Affected Component

Engine

Estimated Time

1-2 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 to prevent burns.

Symptoms

•Check engine light illuminated
•Possible engine noise or knocking
•Oil pressure warning light may also be on
•Reduced engine performance
•Unusual exhaust smoke or odor

Diagnostic Steps

1
Scan the vehicle’s OBD-II system using a scanner to retrieve any error codes.
2
Check the oil level and condition to ensure it was filled correctly.
3
Inspect the oil filter for proper installation and any signs of leaks.
4
Examine the engine for any visible leaks or loose connections.
5
Verify that the correct type and grade of oil were used during the oil change.

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
•Oil filter wrench
•Torque wrench

Parts Required

•Engine oil (correct type and grade)
•Oil filter (if replacement is necessary)

Related Faults

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Diagnostic Steps

1
Scan the vehicle’s OBD-II system using a scanner to retrieve any error codes.
2
Check the oil level and condition to ensure it was filled correctly.
3
Inspect the oil filter for proper installation and any signs of leaks.
4
Examine the engine for any visible leaks or loose connections.
5
Verify that the correct type and grade of oil were used during the oil change.

Solution

1. Preparation

Gather all necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Disconnect the negative battery terminal to ensure safety.

2. Retrieve Error Codes

Connect the OBD-II scanner to the vehicle's diagnostic port.
Turn the ignition to the "On" position without starting the engine.
Follow the scanner's prompts to read and record any error codes.

3. Check Oil Level and Condition

Remove the dipstick and wipe it clean.
Reinsert the dipstick and pull it out again to check the oil level.
If the oil is low, add the correct type of oil as specified in the owner’s manual.
If the oil is dirty or contaminated, consider performing another oil change.

4. Inspect Oil Filter

Locate the oil filter and check for proper installation.
Ensure that the rubber O-ring from the previous oil filter did not stick to the engine.
If the filter is leaking, replace it with a new one.

5. Reconnect Battery and Clear Codes

Reconnect the negative battery terminal.
Use the OBD-II scanner to clear any error codes.
Start the engine and observe if the check engine light reappears.