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Engine-Codes – Generic – P2003

P2003 Code - Diesel Particulate Filter Efficiency Below Threshold Bank 2

Quick Answer

The P2003 code indicates that the Diesel Particulate Filter (DPF) on bank 2 of the vehicle's exhaust system is not functioning efficiently. Common causes include Clogged DPF filter, Faulty DPF sensor, Exhaust leaks. 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
P2003 indicates Diesel Particulate Filter Efficiency Below Threshold Bank 2.
Common causes
Common causes include Clogged DPF filter, Faulty DPF sensor, Exhaust leaks.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P2003 Description

The P2003 code indicates that the Diesel Particulate Filter (DPF) on bank 2 of the vehicle's exhaust system is not functioning efficiently. The DPF is responsible for trapping and removing harmful particulate matter from the exhaust gases before they are released into the environment. When the DPF efficiency falls below the threshold set by the manufacturer, it can lead to increased emissions and decreased fuel efficiency.

OBDII Code P2003 - Diesel Particulate Filter Efficiency Below Threshold Bank 2
P2003 Code - Diesel Particulate Filter Efficiency Below Threshold Bank 2

Common Causes of P2003

  1. Clogged DPF filter
  2. Faulty DPF sensor
  3. Exhaust leaks
  4. Engine misfires
  5. Poor quality fuel

Symptoms of P2003

  1. Reduced engine power
  2. Decreased fuel efficiency
  3. Excessive smoke from the exhaust
  4. Engine going into limp mode

How to Fix P2003

  1. Inspect the DPF filter for clogs and clean or replace it as necessary.
  2. Check and replace the DPF sensor if it is faulty.
  3. Inspect the exhaust system for leaks and repair any damaged components.
  4. Address any engine misfires or other underlying issues that may be contributing to the problem.
  5. Perform a forced regeneration of the DPF to remove excess soot buildup.

Cost to Fix P2003

The typical repair costs for addressing a P2003 code can vary depending on the extent of the issue and the specific repairs needed. On average, repairing a Diesel Particulate Filter efficiency below the threshold on bank 2 can cost anywhere from $500 to $1500, including parts and labor. It's important to note that diagnosis time and labor rates can vary, so it's recommended to obtain quotes from local auto repair shops for a more accurate estimate.

What does this mean?

Tech Notes for P2003

To resolve this, you will have to change the Diesel Particulate Filter and reset the code with an OBD scanner.

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Code P2003 Information for Specific Makes

  • P2003 Audi — Diesel Particulate Filter Efficiency Below Threshold Bank 2
  • P2003 Dodge — Diesel Particulate Filter Efficiency Below Threshold Bank 2
  • P2003 Ford — Diesel Particulate Filter Efficiency Below Threshold Bank 2
  • P2003 Mercedes-Benz — Diesel Particulate Filter Efficiency Below Threshold Bank 2
  • P2003 Volkswagen — Diesel Particulate Filter Efficiency Below Threshold Bank 2
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.

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