Td4 error code p0190

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badMechanic

New Member
Posts
7
Location
uk
Hellooo everyone, so i have problem with my car, something evil is inside, i have limp mode, engine cutt off on 2500rpm,error code p0190 rail sensor.... I have change rail sensor, low pump, fuel filter, high pressure sensor on pump, map sensor, air filter, boost electric valve.... And i check all wiring on engine to ecu, take same car from my friend and try maf sensor, crank and camshaft sensor, boost air temperature, injectors... And nothing change....
Low pump 380-350
High pressure 28000-80000 then limp mode
Pressure sensor 0.71
Maf 450-620
Map 100-117
Boost air temp 128-138C when engine is not runing one day....
IMG_20190618_021729.jpg
 
The boost temperature is showing as too high, by a huge margin. It shouldn't be over 40-50°C under sustained full load.
 
I just unplug boost air temperature sensor, and nothing is change, stil 128c,wiring to ecu is ok.... Maybe ecu fail?
 
So what is all about with this reading?
Got the same problem with Boost Air temperature, could be software issue?

I don't see this parameter on @pscan.eu screenshots and @badMechanic used Delphi software.
I've tried Autocom, Delphi and Wurth software, all give the same reading.

How to measure signal from sensor coming to ECU?
 
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