why does my Ford Explorer Fifth Generation (2011-2019) have a check engine light after oil change

Ford Explorer Fifth Generation (2011-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

583 words

Problem Statement

Discover why your Ford Explorer's check engine light may come on after an oil change. Follow our diagnostic steps and solutions for effective repair.

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 opening the oil drain plug.

Symptoms

•Check engine light illuminated
•Engine running rough or misfiring
•Oil pressure warning light may also be on
•Reduced fuel economy
•Unusual engine noises
•Strong exhaust odor

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any specific trouble codes related to the check engine light.
2
Inspect the engine oil level and quality to ensure it is at the correct level and not contaminated.
3
Check for oil leaks around the oil filter and drain plug to verify proper installation.
4
Examine the air intake system for any disconnections or damage that may have occurred during the oil change process.
5
Inspect the oil filter to ensure it is the correct type and properly installed.
6
Reset the check engine light using the OBD-II scanner and monitor if it re-illuminates after a short drive.

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
•Funnel

Parts Required

•Engine oil (5W-20 or 5W-30)
•Oil filter
•Drain plug gasket (if needed)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any specific trouble codes related to the check engine light.
2
Inspect the engine oil level and quality to ensure it is at the correct level and not contaminated.
3
Check for oil leaks around the oil filter and drain plug to verify proper installation.
4
Examine the air intake system for any disconnections or damage that may have occurred during the oil change process.
5
Inspect the oil filter to ensure it is the correct type and properly installed.
6
Reset the check engine light using the OBD-II scanner and monitor if it re-illuminates after a short drive.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery to prevent electrical issues.
Ensure the vehicle is parked on a flat, stable surface.

2. Check and Change Engine Oil

Sub-steps:
- Remove the oil drain plug using a socket set and drain the old oil completely.
- Replace the drain plug and tighten to the manufacturer’s torque specifications (usually around 20 lb-ft).
- Replace the oil filter using an oil filter wrench; apply a small amount of new oil to the rubber gasket of the new filter before installation.
- Fill the engine with the correct type and amount of new oil (typically 5W-20 or 5W-30) as per the owner’s manual.

3. Inspect Electrical Connections

Sub-steps:
- Inspect the battery terminals for corrosion and ensure they are tight.
- Check all connectors around the engine, especially those related to the oil pressure sensor and mass airflow sensor, for any loose or disconnected wires.
- Secure any loose connections and clean terminals if necessary.

4. Clear Error Codes

Sub-steps:
- Reconnect the battery.
- Use the OBD-II scanner to clear any error codes.
- Start the engine and allow it to idle for a few minutes.

5. Test Drive

Sub-steps:
- Take the vehicle for a short test drive, monitoring for any unusual sounds or behaviors.
- After driving, check the OBD-II scanner to see if any new codes have appeared.