AutoCodes – Dodge – P2000 Dodge

P2000 Dodge Code - Oxides Of Nitrogen Trap Efficiency Below Threshold

Quick Answer

The engine aftertreatment system monitors the oxygen content in the diesel engine exhaust. Common causes include Faulty Oxygen (O2) Sensors, Oxygen Sensors harness is open or shorted, Oxygen Sensors 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: P2000 Dodge indicates Oxides Of Nitrogen Trap Efficiency Below Threshold.
Common causes: Common causes include Faulty Oxygen (O2) Sensors, Oxygen Sensors harness is open or shorted, Oxygen Sensors 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 25,992

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 Jul 03, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P2000 Dodge Description

The engine aftertreatment system monitors the oxygen content in the diesel engine exhaust. The Powertrain Control Module (PCM) monitors the exhaust gases for oxygen content and varies the rich/lean fuel mixture of the intake air fuel mixture to adjust system. This diagnostic measures the oxygen storage capability of the Nitrates of Oxygen (NOx) Absorber Catalyst. The PCM will set the fault if it detects that the NOx Absorber performance is lower than expected. A mobile desoot should not be performed while investigating this fault. The PCM will illuminate the MIL lamp immediately when the diagnostic runs and fails. The PCM will turn off the MIL lamp diagnostic runs and passes in four consecutive drive cycles.

OBDII Code P2000 Dodge - Oxides Of Nitrogen Trap Efficiency Below Threshold - AutoCodes.com — P2000 Dodge Code - Oxides Of Nitrogen Trap Efficiency Below Threshold

What does this mean?

What are the Possible Causes of the DTC P2000 Dodge?

Faulty Oxygen (O2) Sensors
Oxygen Sensors harness is open or shorted
Oxygen Sensors circuit poor electrical connection
Faulty Mass Air Flow (MAF) Sensor
Exhaust Leaks
Powertrain Control Module (PCM) Software Update
Faulty Powertrain Control Module
Nox Absorber Catalyst (NAC)

How to Fix the DTC P2000 Dodge?

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 P2000 Dodge 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.

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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.