1998 Subaru Outback catalytic converter

Tiny
SCUDERI_D
  • MEMBER
  • 1998 SUBARU OUTBACK
  • 4 CYL
  • AWD
  • AUTOMATIC
  • 231,000 MILES
Code P0420= cat. System efficiency below threshold (bank 1)

California car- Is problem in front or rear cat?
Tuesday, June 1st, 2010 AT 3:59 PM

1 Reply

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Could be anywhere. 0420 for Subaru Outback simply indicates that the cat. Converter system is not operating correctly, it does not pinpoint location. Check between cylinder head and front exhaust pipe, between front exhaust pie and front cat. Converter, and between front and rear cat. Converter for exhaust leaks or air suction caused by loose or missing nuts/bolts or damage to exhaust system.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Tuesday, June 1st, 2010 AT 11:32 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 ...
VIEW MORE

Sponsored links