AutoCodes – Mercedes-Benz – P2002 Mercedes-Benz

P2002 Mercedes-Benz Code - Diesel Particulate Filter Efficiency Below Threshold Bank 1

Quick Answer

The Diesel Particulate Filter (DPF) is monitored for conditions where it may be overloaded. Common causes include Faulty, damaged or clogged Diesel Particulate Filter (DPF), Dirty air cleaner element. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P2002 Mercedes-Benz indicates Diesel Particulate Filter Efficiency Below Threshold Bank 1.
Common causes
Common causes include Faulty, damaged or clogged Diesel Particulate Filter (DPF), Dirty air cleaner element.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 20,465
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 27, 2020
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Code P2002 Mercedes-Benz Description

The Diesel Particulate Filter (DPF) is monitored for conditions where it may be overloaded. The monitor compares the calculated restriction of the DPF to two thresholds. By exceeding the first threshold for a sufficient period of time, a wrench light will be illuminated. By exceeding the second threshold for a sufficient period of time, a wrench light and a MIL will be illuminated and engine output will be limited and EGR is disabled.
OBDII Code P2002 Mercedes-Benz - Diesel Particulate Filter Efficiency Below Threshold Bank 1 - AutoCodes.com
P2002 Mercedes-Benz Code - Diesel Particulate Filter Efficiency Below Threshold Bank 1

What are the Possible Causes of the DTC P2002 Mercedes-Benz?

  • Faulty, damaged or clogged Diesel Particulate Filter (DPF)
  • Dirty air cleaner element

How to Fix the DTC P2002 Mercedes-Benz?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2002 Mercedes-Benz code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P2002 Mercedes-Benz code?

Need more information on how to fix the P2002 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2002 Mercedes-Benz code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2002 Mercedes-Benz Code

1. What are the common symptoms of OBDII code P2002 in a Mercedes-Benz related to Diesel Particulate Filter Efficiency Below Threshold Bank 1?

Symptoms include reduced engine performance, increased fuel consumption, black smoke from the exhaust, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P2002 in a Mercedes-Benz related to Diesel Particulate Filter Efficiency Below Threshold Bank 1?

Possible causes include a clogged diesel particulate filter (DPF), faulty DPF pressure sensor, exhaust leaks, incorrect engine oil, or a malfunctioning DPF regeneration system.

3. How can I diagnose OBDII code P2002 in my Mercedes-Benz related to Diesel Particulate Filter Efficiency Below Threshold Bank 1?

Diagnosis typically involves scanning the vehicle's computer for codes, checking the condition of the DPF, inspecting the DPF pressure sensor, and evaluating the exhaust system for leaks or damage.

4. Can I continue driving my Mercedes-Benz with OBDII code P2002 related to Diesel Particulate Filter Efficiency Below Threshold Bank 1 illuminated?

It is not recommended to drive the vehicle with this code illuminated, as it can lead to further damage to the engine or emission system. It is best to address the issue promptly.

5. How can I repair OBDII code P2002 in my Mercedes-Benz related to Diesel Particulate Filter Efficiency Below Threshold Bank 1?

Repair options may include cleaning or replacing the DPF, replacing the DPF pressure sensor, fixing any exhaust leaks, ensuring the correct engine oil is used, and addressing any issues with the DPF regeneration system.

6. What maintenance tips can help prevent OBDII code P2002 related to Diesel Particulate Filter Efficiency Below Threshold Bank 1 in my Mercedes-Benz?

Regularly scheduled maintenance, such as DPF cleaning or regeneration, using the recommended engine oil, and driving the vehicle under proper conditions can help prevent issues with the DPF system.

7. Can a DIY enthusiast fix OBDII code P2002 related to Diesel Particulate Filter Efficiency Below Threshold Bank 1 in a Mercedes-Benz?

While some aspects of diagnosing and repairing this code may be possible for a DIY enthusiast, certain repairs, such as replacing the DPF or dealing with the DPF regeneration system, may require professional assistance.

8. How much does it typically cost to repair OBDII code P2002 related to Diesel Particulate Filter Efficiency Below Threshold Bank 1 in a Mercedes-Benz?

The cost of repairs can vary depending on the specific issue causing the code, but it can range from a few hundred to a couple of thousand dollars, especially if major components like the DPF need replacement.

9. Are there any recalls or service bulletins related to OBDII code P2002 in Mercedes-Benz vehicles?

Check with your local Mercedes-Benz dealership or visit the manufacturer's website to see if there are any recalls or service bulletins related to OBDII code P2002 and Diesel Particulate Filter Efficiency Below Threshold Bank 1 for your specific model.

10. How long can I safely drive my Mercedes-Benz with OBDII code P2002 related to Diesel Particulate Filter Efficiency Below Threshold Bank 1 before getting it repaired?

It is best to address the issue as soon as possible to prevent further damage to the vehicle. Continuing to drive with this code illuminated can lead to reduced engine performance and potential long-term damage to the emission system.

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