Hi all!
I have a problem with my car )
Last week i decided to change the upstream oxygen sensor (Bank 1, sensor 1), after changing i've deleted the error code and everything is ok, but after 250km the check engine light come (
Scanned the car again, and now have:
P0420 ( Catalyst Sistem Below threshold / Bank1)
P0430 ( Catalyst Sistem Below threshold / Bank 2)
P1638 ( Can Link engine control module/instrument cluster circuit/network malfunction.
Any ideea will help
( sorry for my english!)

 

I am troubleshooting the same problem on my X-Type. What made you decide to change the O2 sensor in that location? What codes did you have previously? Was your engine running normally or did you experience any hesitation or jerking?

 

before i had: p01646.
I'm planing to instal Oxygen Sensor Spacers

 

Oxygen Sensor Spacers did the trik
2 Days ago i instaled the o2 spacers and today check engine light disappeared after i stopped to put gas.

sorry for my bad english

 

what will the spacers do??

 

It moves the downstream O2 sensors out of the pipe so it reads just enough exhaust for the ecu to think everything is fine with cats.

 

The catalytic converters must be replaced. Changing the oxygen sensors is a waste of time and money.

While the sensors may be reading normal, the exhaust gasses when analysed, are not.

 

It depends on the law you have over there. I know that a V6 Cosworth engine passed emissions test over here without cats. I'm gonna fit custom made decat pipes on mine sometime soon and have it tested, if it passes going to leave it like that, if not then will refit cats.