2001 chysler PT Cruiser

Tiny
EUGENE SANCHEZ
  • MEMBER
  • 2001 CHRYSLER PT CRUISER
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 102,000 MILES
Trouble code P0420 "catalyst system efficiency below threshold", Ican guess but rather know exactly the meaning can you help?
Do you
have the same problem?
Yes
No
Wednesday, January 19th, 2011 AT 3:17 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • EXPERT
Basically that is saying the catalytic converter isn't working. However, that same code can be set by a bad O2 sensor. Check to make sure the sensor (using a live data scanner) is staying witin.25v and.35v. If it is outside that, the sensor is bad.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Monday, February 14th, 2011 AT 3:34 PM

Please login or register to post a reply.

Related Catalytic Converter Content

How to Test a Catalytic Converter?
VIDEO
How to Test a Catalytic Converter?
Instructional repair video
Catalytic Converter Symptoms
GUIDE
Catalytic Converter Symptoms
What are the symptoms of a bad or plugged catalytic converter? Common failures include: Low engine power, check engine light, failed smog test and more. A catalytic ...

Sponsored links