my Ford Explorer Fifth Generation (2011-2019) keeps throwing random codes

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

484 words

Problem Statement

Learn how to diagnose and fix random error codes in 2011-2019 Ford Explorer. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to avoid shock or short circuits.
•Allow the engine to cool before inspecting or working on it to prevent burns.

Symptoms

•Check engine light illuminated
•Erratic engine performance
•Inconsistent fuel efficiency
•Occasional stalling
•Difficulty starting the vehicle

Diagnostic Steps

1
Scan the vehicle's computer system using an OBD-II scanner to retrieve error codes.
2
Note down all error codes and their definitions for analysis.
3
Inspect the vehicle's wiring harness for any visible damage or loose connections.
4
Check the battery voltage and connections to ensure proper electrical supply.
5
Examine ground connections for corrosion or looseness.
6
Clear the error codes and perform a test drive to see if they reappear.

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
•Basic hand tools
•Wire cutters
•Electrical tape
•Socket set
•Wire brush

Parts Required

•Replacement sensors (if applicable)
•Electrical connectors or wiring (if damaged)

Related Faults

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Diagnostic Steps

1
Scan the vehicle's computer system using an OBD-II scanner to retrieve error codes.
2
Note down all error codes and their definitions for analysis.
3
Inspect the vehicle's wiring harness for any visible damage or loose connections.
4
Check the battery voltage and connections to ensure proper electrical supply.
5
Examine ground connections for corrosion or looseness.
6
Clear the error codes and perform a test drive to see if they reappear.

Solution

1. Preparation

Gather tools and parts needed for diagnostics.
Ensure the vehicle is parked on a flat surface with the parking brake engaged.

2. Inspect and Repair Wiring

Inspect Wiring: Examine the entire wiring harness for frays, breaks, or corrosion.
Repair Damaged Wiring: If damage is found, splice in new wiring and ensure all connections are secure. Use heat shrink tubing for protection.
Tools Required: Wire cutters, electrical tape, heat shrink tubing.

3. Check and Clean Ground Connections

Locate Ground Points: Find all ground connection points in the engine bay and chassis.
Clean Connections: Remove the ground connections, clean the surfaces with a wire brush, and reattach them securely.
Tools Required: Wire brush, socket set.

4. Battery and Electrical System Inspection

Test Battery Voltage: Use a multimeter to check the voltage of the battery; it should read between 12.4V and 12.7V when the vehicle is off.
Inspect Connections: Tighten any loose connections and clean the terminals.
Tools Required: Multimeter, socket set.

5. Sensor Inspection

Identify Sensors: Refer to the error codes to identify which sensors may be faulty.
Inspect and Replace Faulty Sensors: Remove any identified sensors, clean the area, and replace with new sensors if necessary.
Tools Required: Basic hand tools, replacement sensors based on error codes.