P2000

NOx Adsorber Efficiency Below Threshold Bank 1

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

Check the condition of the NOx adsorber
Diagnose NOx sensors
Inspect the catalytic converter
Check the operation of the EGR system

Related codes

P2001 P2002 P2003