P2000 Code - NOx Trap Efficiency Below Threshold Bank 1
Quick Answer
The NOx Adsorptive Three-Way Catalytic Converter (TWC) absorbs NOx created during lean-burn running when the oxygen concentration is high. Common causes include Faulty NOX Three-Way Catalytic Converter (TWC), Faulty Secondary HO2S (Sensor 2), Faulty Third HO2S (Sensor 3). 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 indicates NOx Trap Efficiency Below Threshold Bank 1.
- Common causes
- Common causes include Faulty NOX Three-Way Catalytic Converter (TWC), Faulty Secondary HO2S (Sensor 2), Faulty Third HO2S (Sensor 3).
- 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.
Code P2000 Description
What are the Possible Causes of the DTC P2000?
- Faulty NOX Three-Way Catalytic Converter (TWC)
- Faulty Secondary HO2S (Sensor 2)
- Faulty Third HO2S (Sensor 3)
- Software update
How to Fix the DTC P2000?
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 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 P2000 code?
Need more information on how to fix the P2000 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2000 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P2000 Dodge — Oxides Of Nitrogen Trap Efficiency Below Threshold
- P2000 Honda — NOx Adsorptive Catalyst Efficiency Below Threshold
- P2000 RAM — Oxides Of Nitrogen Trap Efficiency Below Threshold
Frequently Asked Questions about P2000 Code
1. What are the common symptoms of OBDII code P2000 (NOx Trap Efficiency Below Threshold Bank 1)?
- Common symptoms include a decrease in engine performance, reduced fuel efficiency, and the illumination of the check engine light.
2. What can cause the OBDII code P2000 to trigger?
- The code P2000 is typically triggered when the nitrogen oxide (NOx) trap efficiency falls below the specified threshold due to issues such as a faulty NOx sensor, exhaust leaks, or a malfunctioning catalytic converter.
3. How serious is the OBDII code P2000 (NOx Trap Efficiency Below Threshold Bank 1)?
- While the code itself may not cause immediate harm to the vehicle, it can lead to increased emissions and potential damage to the catalytic converter if left unresolved.
4. How can I diagnose the OBDII code P2000?
- Diagnosing the code P2000 usually involves using an OBDII scanner to retrieve the code, followed by a thorough inspection of the NOx sensor, exhaust system, and catalytic converter for any issues.
5. What are some repair tips for fixing the OBDII code P2000?
- Repair tips may include checking and replacing the NOx sensor, repairing any exhaust leaks, cleaning or replacing the catalytic converter, and performing a thorough inspection of the entire emission control system.
6. Can I drive my vehicle with the OBDII code P2000 illuminated?
- It is generally safe to drive the vehicle with the code P2000 illuminated, but it is recommended to address the underlying issue as soon as possible to prevent further damage and ensure optimal vehicle performance.
7. How much does it typically cost to repair the OBDII code P2000?
- The cost of repairing the code P2000 can vary depending on the root cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.
8. Are there any DIY fixes for the OBDII code P2000?
- While some basic checks like inspecting for visible exhaust leaks can be done by DIY enthusiasts, diagnosing and repairing the code P2000 often requires specialized tools and expertise, making it advisable to seek professional help.
9. How often does the OBDII code P2000 occur in vehicles?
- The occurrence of the code P2000 can vary among different vehicle makes and models, but it is relatively common in vehicles equipped with NOx traps and advanced emission control systems.
10. Can I reset the OBDII code P2000 without fixing the underlying issue?
- While you can temporarily clear the code by resetting the vehicle's ECU, the check engine light is likely to reappear if the underlying problem causing the code P2000 is not addressed. It is recommended to fix the issue to ensure proper vehicle operation.
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