AutoCodes – Generic – P2003

P2003 Code - Diesel Particulate Filter Efficiency Below Threshold Bank 2

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: P2003 indicates Diesel Particulate Filter Efficiency Below Threshold Bank 2.
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.

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Code Popularity 14,697

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 27, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
Comments
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Code P2003 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 P2003 - Diesel Particulate Filter Efficiency Below Threshold Bank 2 - AutoCodes.com — P2003 Code - Diesel Particulate Filter Efficiency Below Threshold Bank 2

What does this mean?

What are the Possible Causes of the DTC P2003?

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

How to Fix the DTC P2003?

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.

What does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2003 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 P2003 code?

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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.