code 420, can't find fuel filter

ToddAndMargo · 09-24-2008, 08:45 AM

Hi All,

forester 2006, 4 CYL

I am popping a code 420, which I do believe is an Oxygen sensor or
a fuel filter problem. So I decided to change my fuel filter first (less
expensive).

Problem: I can not find my fuel filter. The only diagram I could find
is for a 2004 forester, and it ain't there. Anyone know where they put
my fuel filter?

Many thanks,
-T

Peaty · 09-24-2008, 09:45 AM

Fuel filter is in the gas tank:

Fuel filter replacement - ScoobyMods

Most likely something with the rear O2 sensor though:

Rear O2 Sensor mechanical fix for CEL code P0420 - ScoobyMods

PS welcome to the site, if you can't see the pics in my links above you will need to register on our site, it's free though.

ToddAndMargo · 09-24-2008, 09:50 AM

Thank you!

Peaty · 09-24-2008, 09:59 AM

Happy to help, the filter info you are looking for is down at the bottom of the page on the first link.

09-24-2008, 08:45 AM	#1 (permalink)
ToddAndMargo Join Date: Sep 2008 Posts: 15 Gallery: 0 iTrader: 0 / 0%	code 420, can't find fuel filter Hi All, forester 2006, 4 CYL I am popping a code 420, which I do believe is an Oxygen sensor or a fuel filter problem. So I decided to change my fuel filter first (less expensive). Problem: I can not find my fuel filter. The only diagram I could find is for a 2004 forester, and it ain't there. Anyone know where they put my fuel filter? Many thanks, -T

09-24-2008, 09:45 AM	#2 (permalink)
Peaty The Modfather Join Date: Jan 2006 Location: Lawrence, Kansas 04 MT F-XT Cobb Stage 2 & 06 B9 Tribeca Posts: 6,330 Gallery: 0 iTrader: 4 / 100%	Fuel filter is in the gas tank: Fuel filter replacement - ScoobyMods Most likely something with the rear O2 sensor though: Rear O2 Sensor mechanical fix for CEL code P0420 - ScoobyMods PS welcome to the site, if you can't see the pics in my links above you will need to register on our site, it's free though. __________________ Peaty 04 -XT 06 B9 Tribeca & 99 Miata ScoobyMods peatpics

09-24-2008, 09:59 AM	#4 (permalink)
Peaty The Modfather Join Date: Jan 2006 Location: Lawrence, Kansas 04 MT F-XT Cobb Stage 2 & 06 B9 Tribeca Posts: 6,330 Gallery: 0 iTrader: 4 / 100%	Happy to help, the filter info you are looking for is down at the bottom of the page on the first link. __________________ Peaty 04 -XT 06 B9 Tribeca & 99 Miata ScoobyMods peatpics

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09-24-2008, 09:50 AM	#3 (permalink)
ToddAndMargo Join Date: Sep 2008 Posts: 15 Gallery: 0 iTrader: 0 / 0%	Thank you!