Electronic filter to deleteri p0420 - Toyota Yaris Forums

An1992 · 10-07-2023, 11:48 PM

I have a European Toyota yaris 2 from 2007, with a 1.0 1krfe engine with p0420 error.. I purchased an extension to remove the oxygen probe downstream of the catalytic converter, but the error appears again... Currently the probe values are between 0.1 and 0.85volts... I think that sometimes it exceeds this and the error appears.. I would like to modify the electrical wiring of the probe with the electrical filter, so as to always have volts values in the suitable range but I found various information on the net. Do you have the wiring diagram compatible with Toyota Yaris? Thank you

An1992 · 10-08-2023, 01:52 AM

I apologize if I post another site, thanking you but I found this one which can be useful, however they are two different circuits

sh0rtlife · 10-09-2023, 05:48 PM

get a longer tube version with a "mini cat" in the tube..should solve the issue...if it doesn youve got engine issues

An1992 · 10-23-2023, 03:30 AM

Quote:

Originally Posted by sh0rtlife

get a longer tube version with a "mini cat" in the tube..should solve the issue...if it doesn youve got engine issues

What kind of engine problem if any? Piece with 90* or direct filter?

An1992 · 08-02-2024, 06:30 AM

"I use one straight + one 90 with mini cat, OBD error present but now no warning light on the dashboard, probably doesn't solve it but delays the notification a lot. I also tried with an electronic filter on the lambda sensor wiring but nothing."

10-07-2023, 11:48 PM	#1
An1992 Drives: Toyota Yaris 2007 1krfe Join Date: Sep 2023 Location: Italy Posts: 6	Electronic filter to deleteri p0420 I have a European Toyota yaris 2 from 2007, with a 1.0 1krfe engine with p0420 error.. I purchased an extension to remove the oxygen probe downstream of the catalytic converter, but the error appears again... Currently the probe values are between 0.1 and 0.85volts... I think that sometimes it exceeds this and the error appears.. I would like to modify the electrical wiring of the probe with the electrical filter, so as to always have volts values in the suitable range but I found various information on the net. Do you have the wiring diagram compatible with Toyota Yaris? Thank you Attached Images Last edited by An1992; 10-08-2023 at 01:39 AM.

10-08-2023, 01:52 AM	#2
An1992 Drives: Toyota Yaris 2007 1krfe Join Date: Sep 2023 Location: Italy Posts: 6	I apologize if I post another site, thanking you but I found this one which can be useful, however they are two different circuits Attached Images

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10-09-2023, 05:48 PM	#3
sh0rtlife Drives: 2007 5dr canadian import Join Date: Dec 2016 Location: pacific north WET Posts: 1,025	get a longer tube version with a "mini cat" in the tube..should solve the issue...if it doesn youve got engine issues

08-02-2024, 06:30 AM	#5
An1992 Drives: Toyota Yaris 2007 1krfe Join Date: Sep 2023 Location: Italy Posts: 6	"I use one straight + one 90 with mini cat, OBD error present but now no warning light on the dashboard, probably doesn't solve it but delays the notification a lot. I also tried with an electronic filter on the lambda sensor wiring but nothing."