Hoping for some help with my 99 7.3 with 250,000+ miles
Getting codes:
P0472- Exhaust pressure sensor circuit low input.
P01247 Turbo boost pressure low.
P01248 Turbo boost pressure not detected.
It runs like **** aka no power when it's cold, will run a 2000 rpm and not break 20 mph. Slow to shift...
Runs fine once it's up to temp.
I replaced the exhaust pressure sensor and tube a couple years ago. (Wondering if it may need cleaned already?)
Replaced the crankshaft sensor a few weeks ago.
And the injector pressure sensor, if I remember right. about a month ago.
Strangely I'm getting no check engine dummy light.
I'm afraid I may be looking at the wire harness under the valve covers? But hoping for other things to try first.
Also would it be able to be narrowed down with a shop computer rather than this cheap code reader?
Any helpful direction would be very appreciated!
TIA!