P2000 OBD-II Trouble Code: NOx Trap Efficiency Below Threshold Bank 1

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P2000 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P2000 code

P2000 is a diagnostic trouble code (DTC) for "NOx Trap Efficiency Below Threshold Bank 1". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$20.00
Toyota$20.00
BMW$20.00
SCHEDULE P2000 DIAGNOSTIC Get a fair and transparent estimate upfront

P2000 code definition

NOx Trap Efficiency Below Threshold Bank 1

What the P2000 code means

P2000 is a general OBD2 diagnostic trouble code that indicates a malfunction with the NOx Trap; specifically, the NOx trap has efficiency that is below threshold for Bank 1. The Engine Control Module (ECM) checks for the proper levels of NOx detected and when it detects a very low threshold, a P2000 code is set. The Check Engine Light will be illuminated on the dash and may be a flashing Check Engine Light.

What causes the P2000 code?

  • Catalytic converter failure
  • Open or short within the wiring harness
  • Poor electrical connection
  • ECM that has failed or is failing
  • Failed Sensor or solenoid

What are the symptoms of the P2000 code?

In most cases, the driver will not notice any adverse symptoms. The Check Engine Light will be displayed on the dashboard in all circumstances. In some vehicles, the Check Engine Light may be flashing.

How does a mechanic diagnose the P2000 code?

  1. A scan tool will be used to check for any codes stored in the vehicle's ECM, including pending codes. A qualified technician will note the freeze frame data for every code present as this tells them what conditions the code occurred under.

  2. Next, the codes will be cleared and a test drive performed under like conditions to the original code.

  3. Now a visual inspection will be done looking for any damaged components.

  4. Next, the catalytic converter will be checked and tested for proper operation.

  5. The scan tool will then be used to check for proper sensor and solenoid operation.

  6. Lastly, the vehicles ECM will be tested.

Common mistakes when diagnosing the P2000 code

Commonly, mistakes are made when steps are skipped. When this occurs, it makes the simple items that can cause this code to be overlooked, wasting time and money. All steps must be followed to diagnose the P2000 code right the first time.

How serious is the P2000 code?

The P2000 code generally does not have any driveability symptoms. When the P2000 code is seen, it may indicate that the vehicle is dumping excess NOx into the atmosphere. NOx is one of the controlled emissions byproducts of burning fuel and will cause emissions testing to fail.

What repairs can fix the P2000 code?

Additional comments for consideration regarding the P2000 code

An advanced level scan tool is necessary to diagnose the P2000 code. These scan tools allow much more than checking and clearing the codes. Advanced level scan tools allow access to the live data stream of the vehicle which shows live data and changes over time.

Need help with a P2000 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6220.

trouble codes
P2000
Check Engine Light

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P2000 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.8/5

Number of Reviews

4,810

Rating Summary
4,424
187
47
28
124
4,424
187
47
28
124

Joel

19 years of experience
741 reviews
Joel
19 years of experience
Acura RL - Check Engine Light is on - Jacksonville, Florida
very knowledgeable and precise. able to fix electrical issues in my car. Right on time for the appointment.

Christopher

15 years of experience
41 reviews
Christopher
15 years of experience
Honda Accord - Check Engine Light is on - Fairburn, Georgia
Christopher was excellent! He explained everything in detail to make sure I understood. He was professional and provided me with the next course of actions to resolve my care issues. I'm glad he was sent to service my car.

Alexander

18 years of experience
58 reviews
Alexander
18 years of experience
Saab 9-7x - Check Engine Light is on - Kissimmee, Florida
He was very friendly and very helpful . I felt like it was being around a close friend , also gave me so very good advice on my car & future advice about it . Highly recommend mechanic, would use his services again .

Matthew

31 years of experience
639 reviews
Matthew
31 years of experience
Jeep Patriot - Check Engine Light is on - Norfolk, Virginia
Matthew was on time which was a relief, he is very knowledgeable and was easy to understand what was wrong and what was being done. I am recommending to friends and family due to the great experience Matthew gave me. Extremely professional 10/10

More related articles

P0590 OBD-II Trouble Code: Cruise Control Multi-Function Input “B” Circuit Stuck
P0590 means an electrical issue with the cruise control multi-function input B circuit, commonly caused by a malfunctioning cruise control switch.
P0708 OBD-II Trouble Code: Transmission Range Sensor Circuit High Input
P0708 Code Definition Transmission Range Sensor Circuit High Input What the P0708 code means The P0708 trouble code means that the Engine...
P0337 OBD-II Trouble Code: Crankshaft Position Sensor A Circuit Low Input
P0337 means that the crankshaft is suffering because of low voltage. This could be due to sensor not being aligned properly or electrical problems.

Related questions

The Check Engine Light is on but the scanner shows no codes.

The brand, type, quality, and manufacturer coverage of the scanner you bought will dictate how they read the codes. Unfortunately, not all scan tools are created equal. When it comes to hybrid vehicles, you may want to make sure you...

Check Engine light on

The wrench light is a maintenance indicator. It illuminates whenever your vehicle is due for a timed maintenance. The check engine light could be several hundred issues. A qualified technician such as one from YourMechanic can retrieve engine codes and...

Check engine light on

The code P0442 is for a very small leak in the evaporative system of the fuel tank and its vent system. A leak in the gas cap is the most common cause of this code and the gas cap or...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com