I've owned my truck for 4 years with no issues/codes. Just started getting P0430 Catalyst Efficiency below threshold (banks 1&2). What kind of readings should I see on my live database OBDII scanner for the MAP info (in. hg)? I get 8.8 at idle, as I ramp up engine rpm I see 9.3 & as I slowly come back to idle it might go down to 6.5 & then go back to
8.8. Doesn't sound good to me. I'd expect a higher reading at idle.Where is the MAP sensor located? Anyone? Thanks