I have a recurring P0421 DTC with no drivability issues.
Recently I have a failed mode 6 Catalyst Monitor bank 1 MID $21 and TID $81.
I have looked at live data and the upstream A/F O2 reads normally as does the downstream O2.
I read that Ford listed mode 6 data at the Ford site but I can't find it.
Are Mode 6 diagnostics available somewhere?
Thanks for any help.
Recently I have a failed mode 6 Catalyst Monitor bank 1 MID $21 and TID $81.
I have looked at live data and the upstream A/F O2 reads normally as does the downstream O2.
I read that Ford listed mode 6 data at the Ford site but I can't find it.
Are Mode 6 diagnostics available somewhere?
Thanks for any help.