Join Date: Nov 2006
Location: Moses Lake, WA
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P0478 most likely you need a Exhaust back pressure sensor, or the tube going to it is plugged
P1211 if you have a chip, programmer, or module installed it will set that code and is normal
The EBP sensor on a 99+ is just above the waterpump, on earlier ones it is mounted on the backside of the HPOP resevoir, under the plastic engine cover
There are Pig tails that eliminate this code if you do not want to replace the sensor. But if you do the Exhaust back pressure valve will not work.
99.5 F-250 PSD AT 4x4, 4in lift, 37 13.5 18 Pro comp Extreme A/T's, S&B Intake, GTP38R, DP Tuner custom programs (140 Agg., 120 sled pull, 80 tow and 60 tow), Rosewood DIY stage 2 injectors, BTS Trans, 5in exhaust no muffler, 6 oh intercooler, Ford AIC, EBPV delete, Foil delete, T/C lock up mod, Pusher Fuel Pump, Three Chime train Horns
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