Fordrcr943
Junior Member
Catless long tubes with H pipe (see photo)
No downstream O2 sensors installed.
Still getting p2270 and p2272 Downstream sensors stuck/lean biased although I've been assured by the Lund tuning that the wideband upstreams alone will account for no downstream sensors and tuning sensors out is not needed.
I get these codes very randomly. Can drive for hours under every condition and nothing, then get MIL several times in short amount of time. No exhaust leaks before or after upstream sensors. No vacuum leaks on top end.
Suggestions and/or ideas? TIA
No downstream O2 sensors installed.
Still getting p2270 and p2272 Downstream sensors stuck/lean biased although I've been assured by the Lund tuning that the wideband upstreams alone will account for no downstream sensors and tuning sensors out is not needed.
I get these codes very randomly. Can drive for hours under every condition and nothing, then get MIL several times in short amount of time. No exhaust leaks before or after upstream sensors. No vacuum leaks on top end.
Suggestions and/or ideas? TIA
