This Caddy came in with codes p0171 lean B1, p0300 and another for the B1 o2 not switching pending. Checked out ign, plugs new, coils all putting out 30+kv. LTFT bank 1 was at 25% bank 2 at 10 % at idle 0% at 2500 rpm. After it cooled completely found intake l... Login to read more.