AutoCodes – Generic – P2001

P2001 Code - Oxides Of Nitrogen Trap Efficiency Below Threshold Bank 2

Quick Answer

P2001 indicates Oxides Of Nitrogen Trap Efficiency Below Threshold Bank 2. Common causes include Faulty Sensor or Solenoid, Sensor or Solenoid harness is open or shorted, Sensor or Solenoid circuit poor electrical connection. 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: P2001 indicates Oxides Of Nitrogen Trap Efficiency Below Threshold Bank 2.
Common causes: Common causes include Faulty Sensor or Solenoid, Sensor or Solenoid harness is open or shorted, Sensor or Solenoid circuit poor electrical connection.
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 20,272

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
Cost to Diagnose
Comments
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Code P2001 Description

OBDII Code P2001 - Oxides Of Nitrogen Trap Efficiency Below Threshold Bank 2 - AutoCodes.com — P2001 Code - Oxides Of Nitrogen Trap Efficiency Below Threshold Bank 2

What does this mean?

What are the Possible Causes of the DTC P2001?

Faulty Sensor or Solenoid
Sensor or Solenoid harness is open or shorted
Sensor or Solenoid circuit poor electrical connection
Powertrain Control Module (PCM) / Engine Control Module (ECM) Software Update
Faulty Powertrain Control Module (PCM) / Engine Control Module (ECM)
Damage Catalytic Converter
Catalytic converter improper operation

How to Fix the DTC P2001?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2001 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 P2001 code?

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Need Help with the Code?

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Information for Specific Makes

P2001 Dodge — Oxides Of Nitrogen Trap 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.