Range Rover exhaust filter full: causes and how you can fix it!

As a long-time Range Rover owner, I can attest that dealing with car problems can be frustrating, especially when you don’t know the problem.

One of the most common issues I have encountered is the dreaded Range Rover exhaust filter full warning. Sounds familiar, right?

If your Range Rover’s exhaust filter (DPF) is full, it’s likely due to short, low-speed drives preventing the automatic cleaning process. To resolve this, drive at a high speed for around 20 minutes. Persistent issues may require professional cleaning or replacement.

In this article, I’ll be sharing my knowledge and experience to help you understand the signs and symptoms, causes, and fixes of the Range Rover exhaust filter full problem.

What models are affected?

• Land Rover Defender
• Range Rover Discovery
• Range Rover Evoque
• Range Rover Sport
• Range Rover Velar
• Range Rover Vogue

Signs and symptoms

The exhaust filter full warning will usually appear on your dashboard when the system detects a blockage in the exhaust system. In most cases, the warning will be accompanied by a loss of power and a decrease in fuel efficiency. In some cases, you may even experience difficulty starting the car.

List of possible OBD codes

If you see the exhaust filter full warning, the following OBD codes may also be present:

• P2452: Code P2452 is triggered when the exhaust gas pressure sensor detects a malfunction in the exhaust filter pressure sensor circuit.
• P2453: Code P2453 is caused when the exhaust gas temperature sensor detects a malfunction in the exhaust filter temperature sensor circuit
• P2463: Code P2463 is set when the filter reaches a predetermined accumulation of particulate matter, indicating that a regeneration cycle has failed to burn off the collected particles.

Common causes

The most common causes of the Range Rover exhaust filter full issue are:

1. Frequent short trips: When you make short trips, the engine may not have the time to reach the optimum temperature to complete a regeneration cycle. This scenario can cause particulate matter to build up, causing the filter to become clogged.
2. Faulty system components: Faulty system components, like the pressure sensor, temperature sensor, or exhaust gas recirculation system, can trigger the warning.
3. Using low-quality or incorrect fuel: Using poor-quality fuel or fuel with additives can clog your exhaust filter.
4. Engine problems: Mechanical issues within your Range Rover engine can also cause the buildup of particulate matter in the exhaust system.

Can it be fixed without a mechanic?

Yes. With the right tools and parts, you can fix the problem without the help of a mechanic. However, if the problem persists, you may want to consider taking your car to a qualified mechanic.

Parts you’ll need to fix it

• Exhaust Filter
• Oxygen Sensor

Tools you’ll need to fix it

• Socket set
• Digital multimeter
• Torque Wrench
• Screwdrivers
• Jack and jack stands

How to fix it

Resetting the exhaust filter

Resetting the exhaust filter light is one of the most straightforward ways to fix the issue.

To do this, follow the steps below:

• Start your Range Rover and let it idle for at least 20 minutes.
• Drive the car for at least 30 minutes at a constant speed of over 40 mph.

Replace the exhaust filter

If resetting the exhaust filter doesn’t solve the problem, you may need to replace the exhaust filter.

• Start by jacking up your Range Rover and securely placing it on jack stands.
• Locate your vehicle’s exhaust filter under your car.
• Remove the filter and clean the surrounding area.
• Replace the old exhaust filter with a new one.
• Reassemble the parts in reverse order as they were removed.

Replace the Oxygen Sensor

If the issue persists, the oxygen sensor may be faulty and must be replaced.

• Start by locating the sensor under the hood of your Range Rover.
• Disconnect the electrical connector and remove it with a sensor socket.
• Install the new oxygen sensor and reconnect the electrical connector.
• Torque the sensor to the manufacturer’s specifications.

Potential alternative causes

• Faulty turbocharger
• Fuel filter problems
• Wiring issues within the exhaust system

FAQs

Summary

The Range Rover exhaust filter full warning can be a headache, but with the right knowledge, tools, and parts, it can be fixed. The most common causes of the exhaust filter full warning are short trips, faulty components, using low-quality fuel, and mechanical problems within the engine. To fix the issue, you can try resetting the exhaust filter, replacing the exhaust filter, or the oxygen sensor.