how to fix the AdBlue warning in Ford Explorer Sixth Generation (2020-present)

Ford Explorer Sixth Generation (2020-present)

Error Codes

1-3 hours

Time

medium

Difficulty

high

Severity

3 min read

489 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix the AdBlue warning in Ford Explorer (2020-present). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Exhaust System

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems
•Allow the vehicle to cool before inspecting the exhaust components

Symptoms

•AdBlue warning light illuminated on the dashboard
•Decreased engine performance or power reduction
•Engine may enter limp mode
•Difficulty starting the engine
•Check engine light may also be illuminated

Diagnostic Steps

1
Scan the vehicle using an OBD-II scanner to retrieve any diagnostic trouble codes (DTCs)
2
Check the AdBlue fluid level in the reservoir
3
Inspect the AdBlue injector for blockages or leaks
4
Examine the AdBlue pump for functionality
5
Verify the condition of the AdBlue tank for any damage or contamination
6
Inspect wiring and connectors related to the AdBlue system for any signs of corrosion or disconnection

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
•Multimeter
•Funnel

Parts Required

•AdBlue fluid
•AdBlue injector (if found defective)
•AdBlue pump (if found defective)

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Diagnostic Steps

1
Scan the vehicle using an OBD-II scanner to retrieve any diagnostic trouble codes (DTCs)
2
Check the AdBlue fluid level in the reservoir
3
Inspect the AdBlue injector for blockages or leaks
4
Examine the AdBlue pump for functionality
5
Verify the condition of the AdBlue tank for any damage or contamination
6
Inspect wiring and connectors related to the AdBlue system for any signs of corrosion or disconnection

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the battery to prevent electrical issues during repair.

2. Check and Refill AdBlue Fluid

Locate the AdBlue reservoir (usually near the fuel filler).
Remove the reservoir cap.
Use a funnel to add AdBlue fluid until the level reaches the recommended mark.
Replace the cap securely.

3. Inspect AdBlue Injector

Locate the AdBlue injector, usually mounted on the exhaust system.
Disconnect the electrical connector and any hoses connected to the injector.
Remove the injector using the appropriate socket.
Inspect for blockages; clean if necessary, or replace if damaged.

4. Test and Replace AdBlue Pump (if necessary)

Locate the AdBlue pump, usually found near the tank.
Disconnect the electrical connector and hoses.
Test the pump using a multimeter to ensure it receives power when activated.
If it does not function correctly, replace the pump following the manufacturer's specifications.

5. Clear Diagnostic Codes

Reconnect the battery.
Use the OBD-II scanner to clear any diagnostic trouble codes related to the AdBlue system.
Start the engine and check that the AdBlue warning light is no longer illuminated.