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why does my Ford Explorer Fifth Generation (2011-2019) check engine light keep coming on - Ford Explorer
Home/Cars/Ford/Explorer/Fifth Generation (2011-2019)/why does my Ford Explorer Fifth Generation (2011-2019) check engine light keep coming on

why does my Ford Explorer Fifth Generation (2011-2019) check engine light keep coming on

Ford Explorer Fifth Generation (2011-2019)

Error Codes
2-4 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
554 words

Problem Statement

Learn how to diagnose and fix the check engine light issue in Ford Explorer (2011-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component
Engine
Estimated Time
2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect the battery before working on electrical systems.
  • •Allow the engine to cool before handling components to avoid burns.

Symptoms

  • •Check engine light illuminated
  • •Engine running rough or misfiring
  • •Decreased fuel efficiency
  • •Increased emissions
  • •Unusual engine noises
  • •Poor acceleration or power loss

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

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
  • •Torque wrench
  • •Mass airflow sensor cleaner
  • •O2 sensor socket

Parts Required

  • •Spark plugs (if needed)
  • •Ignition coils (if needed)
  • •MAF sensor (if needed)
  • •Oxygen sensors (if needed)
  • •Fuel cap (if damaged)

Additional Information

Affected Component
Engine
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
5 items
Parts Required
5 items

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Solution
1. Preparation
  • Gather required tools and parts.
  • Disconnect the negative battery terminal to prevent electrical shorts.
  • Allow the engine to cool if it has been running.
2. Retrieve and Analyze Error Codes
  • Connect the OBD-II scanner to the vehicle's diagnostic port.
  • Turn the ignition to the "On" position without starting the engine.
  • Record all error codes and their definitions for further analysis.
3. Inspect and Replace Faulty Components
  • Fuel Cap:

    • Inspect the fuel cap for cracks or damage.
    • Replace with a new cap if necessary.
  • Ignition System:

    • Remove spark plugs using a socket set and inspect for wear or fouling.
    • Replace any faulty spark plugs with OEM or high-quality replacements.
    • Check ignition coils for proper operation and replace if malfunctioning.
  • Mass Airflow Sensor:

    • Disconnect the MAF sensor connector.
    • Remove the sensor from its housing and clean it with MAF cleaner.
    • Reinstall and reconnect the sensor.
  • Oxygen Sensors:

    • Locate the upstream and downstream oxygen sensors in the exhaust system.
    • Use an O2 sensor socket to remove any faulty sensors.
    • Install new sensors and ensure they are properly connected.
4. Clear Error Codes
  • Reconnect the negative battery terminal.
  • Use the OBD-II scanner to clear all stored error codes.
  • Start the engine to check if the check engine light remains off.