OBD Guide

P2000

NOx Adsorber Efficiency Below Threshold Bank 1

P2000 is an OBD-II diagnostic trouble code meaning: NOx Adsorber Efficiency Below Threshold Bank 1. Common causes: nox adsorber malfunction, problems with nox sensors. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Increased fuel consumption
  • Reduced engine power
  • Check Engine Light Illuminates
  • Unstable engine idling

Causes

  • NOx adsorber malfunction
  • Problems with NOx sensors
  • Clogged catalytic converter
  • Exhaust gas recirculation (EGR) system malfunction

How to Fix

  1. Check the condition of the NOx adsorber
  2. Diagnose NOx sensors
  3. Inspect the catalytic converter
  4. Check the operation of the EGR system

Related codes

Error P2000 by Vehicle Brand

FAQ

What does the P2000 code mean?

P2000 is an OBD-II diagnostic trouble code that indicates: NOx Adsorber Efficiency Below Threshold Bank 1

What causes a P2000 error code?

The most common causes of P2000 include: NOx adsorber malfunction; Problems with NOx sensors; Clogged catalytic converter; Exhaust gas recirculation (EGR) system malfunction.

How do I fix a P2000 diagnostic trouble code?

To fix P2000: Check the condition of the NOx adsorber. Diagnose NOx sensors. Inspect the catalytic converter. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P2000?

Yes, but get it checked soon

How much does it cost to fix P2000?

The estimated repair cost for P2000 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat