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I have three codes, at least two of which I'm guessing are related. Looking for any wisdom on the culprit.
P1247 - turbo boost low
P0471 - exhaust back pressure sensor circuit
P1211 - injector control pressure higher/lower
No driveability issues, no CEL, everything seems normal. I can get close to 30 PSI of boost at WOT on pillar gauge.
I put in a non-EBPV pedestal with the new turbo recently and put in the Riff Raff pedestal actuator isolator, so guessing the new pedestal is not part of the problem.
I monitored ICP, BARO, MAP, and MGP on a few runs and BARO and MAP hz readings were flat liners.
Tube to MAP seemed okay (my boost gauge is teed into it).
I ordered a new MAP sensor. Seem correct? Wondering if injector control pressure is tied in somehow to the other codes (fueling based off default settings with no MAP readings?) or would that be a different system unrelated to the MAP and I have something else going on as well?
EBPS is the sensor on the tube to the manifold, not the valve. Could be clogged, defective, wiring. That's all I got...I don't have anything useful for the other 2 codes
I assume you've cleared these codes and they continue to repopulate. If that's the case it's a lot more likely to be a wiring issue than the MAP actually being bad. To tell the truth when you remember these trucks are legally old enough to drink it's a fair bet all 3 of your codes a wiring related. I'd probably start with checking continuity between the sensors connectors and the 42 pin, as well as inspecting the 42 pin where it's known to rub the valve cover.
I assume you've cleared these codes and they continue to repopulate. If that's the case it's a lot more likely to be a wiring issue than the MAP actually being bad. To tell the truth when you remember these trucks are legally old enough to drink it's a fair bet all 3 of your codes a wiring related. I'd probably start with checking continuity between the sensors connectors and the 42 pin, as well as inspecting the 42 pin where it's known to rub the valve cover.
that would be consistent with all the other problems I've had, I'll check for continuity , thanks.
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