why does my Ford Explorer Sixth Generation (2020-present) check engine light keep coming on

Ford Explorer Sixth Generation (2020-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

486 words

Problem Statement

Learn how to diagnose and fix the check engine light issue in Ford Explorer Sixth Generation (2020-present). Step-by-step guide with diagnostic procedures.

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 inspecting components

Symptoms

•Check engine light illuminated on the dashboard
•Engine running roughly or misfiring
•Decreased fuel efficiency
•Unusual noises from the engine compartment
•Strong fuel odor
•Vehicle enters limp mode or reduced power mode

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to retrieve diagnostic trouble codes (DTCs)
2
Inspect the gas cap for proper sealing or damage
3
Check engine oil and coolant levels to ensure they are within normal ranges
4
Examine visible vacuum hoses for cracks or disconnections
5
Test the battery voltage and connections to rule out electrical issues
6
Perform a visual inspection of the exhaust system for any signs of leaks or damage

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
•Hose clamp pliers

Parts Required

•Replacement gas cap (if necessary)
•Replacement vacuum hoses (if necessary)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to retrieve diagnostic trouble codes (DTCs)
2
Inspect the gas cap for proper sealing or damage
3
Check engine oil and coolant levels to ensure they are within normal ranges
4
Examine visible vacuum hoses for cracks or disconnections
5
Test the battery voltage and connections to rule out electrical issues
6
Perform a visual inspection of the exhaust system for any signs of leaks or damage

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the negative battery terminal to prevent electrical shorts while working.
Gather diagnostic information from the OBD-II scanner.

2. Address Error Codes

Sub-step 1: Identify the retrieved DTCs. Refer to the vehicle's repair manual for specific error code definitions.
Sub-step 2: Based on the codes, perform the necessary repairs (e.g., replace faulty sensors, fix wiring issues).
Tools Required: OBD-II scanner, multimeter.

3. Inspect and Replace Components

Sub-step 1: If a faulty gas cap is indicated, replace it with a new one.
Sub-step 2: For vacuum leaks, replace any damaged hoses and clamps.
Tools Required: Socket set, hose clamp pliers.

4. Reset Check Engine Light

Sub-step 1: Reconnect the negative battery terminal.
Sub-step 2: Use the OBD-II scanner to clear the error codes.
Tools Required: OBD-II scanner.

5. Test Drive

Sub-step 1: Take the vehicle for a test drive to ensure the check engine light does not reappear.
Sub-step 2: Monitor engine performance during the test drive.