Hi,

DTC P2000 -NOx adsorptive catalyst efficiency below threshold

Possible causes-

• Catalytic converter failing
• downstream O2 sensor failing
• exhaust leak at or before the converter
• open/short in downstream O2 sensor wiring

Most common problem is failure of converter and O2 sensor

Have converter on O2 sensor checked- both are covered under a 8yr/80,000 mile federal emissions warranty.

This is a Paysite

Have a peaceful holiday season!!!

Hi,

Essentially what is happening is the 3way converter is not converting NOx into less harmefull emissions, this can be due to either the converter itself failing or the O2 sensor not giving proper reading. Both need to be tested- the 3way converter with an exhaust gas analyzer and the O2 sensor with a level 2 diagnostic scanner. If the exhaust gas analyzer is showing too high NOx readings, then the converter is bad and needs to be replaced.

This is a Paysite

Have a peaceful holiday season!!!