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Re: P0420 diagnosis with tactrix cable

PostPosted: Tue Jan 09, 2018 2:36 am
by Mariano
Use 02 spacer only on rear sensors. Its been working fine now, no cel anymore.

Re: P0420 diagnosis with tactrix cable

PostPosted: Fri Jan 19, 2018 4:57 pm
by jp928
When you say "checked all plugs' do you mean spark plugs, or connector plugs for o2 sensors?
jp