Join Date: Jul 2007
Location: West Vancouver, BC Canada
Feedback Score: 0 reviews
I had a P1248 a few weeks ago in -35degC weather. Lots of exhaust leaking out donuts at merged collector right before the turbo. Put in new IH up-pipes from SinisterDiesel. Problem solved.
May not be bad sensor but boost leaks. Check your boots, up-pipes for soot, etc.
It will throw the code if the pcm is adding a certain amount of fuel and you don't get boost within set range.
I think I posted up a thread with pics on doing the up-pipes if you search the forums.
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2001 F250 4x4 crew lariat 7.3L auto, DP Tuner F5 no-start/valet/20tow/80econo/140aggressive, NAPC 450series trans w/billet triple disc TC, ISSPRO egt/boost/pyro, foil delete, 6" stainless tip, Magnaflow 17979 4" turbo-back, dieselsite boots & coolant filter kit, HX crossover, boost fooler, 6.0L trans cooler, ported turbo housing, DIY 6637 Tymar, billet grill, line-x bedliner, tint, 08' alum diff cover, clear corners & tails, 20w LED taillight bulbs, cheap OPT7 HID kit, 2000w inverter, Tekonsha Primus brake controller, 220A HD alternator, 120w LED light bar up front, 2x18w led spots backup lights, 145USgal tidy tank, superlift 4" kit full springs & bilstein 5125 shocks, Level8 striker 16x8.5 blk rims, etc.
2009 VW Jetta 2.0TDI 6spd Highline full load except nav. 19" Audi RS6 rims. REVO tuned. Aftermarket android 4.2 navi 7" touch head unit, Custom fiberglass box MD Sound 12" & Boss NXD5500 amp. GTI grille and projector fogs.
BioPro190 owner. 20,000L produced 2010-2015.