P0420

Tiny
FYRECHILDE
  • MEMBER
  • 2005 SATURN ION
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 156,000 MILES
Engine light came on. We get two codes, both showing P0420. Since this code came up twice, does this mean that the catalytic converter needs to be replaced? Or should I try replacing the downstream oxygen sensor first?
Do you
have the same problem?
Yes
No
Saturday, March 12th, 2016 AT 10:21 AM

1 Reply

Tiny
CJ MEDEVAC
  • EXPERT
THE EZist THING TO TRY IS RUN A FULL BOTTLE OF "SEAFOAM" IN YOUR GAS TANK. THIS WILL HURT NUTHIN' (EVEN IF IT DOES NOT WORK) BUT MANY TIMES THIS WILL FIX MANY O2 ISSUES.

HAVE YOU A LINK BELOW OF THE PRODUCT, OTHER STORES HAVE IT TOO

http://shop.advanceautoparts.com/p/sea-foam-motor-treatment-for-gas-and-diesel-engines-16-fl.-oz.-sf16/6410004-P?searchTerm=seafoam

LET US KNOW HOW IT GOES

THE MEDIC
Was this
answer
helpful?
Yes
No
Saturday, March 12th, 2016 AT 4:36 PM

Please login or register to post a reply.

Recommended Guides