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Torque » Torque OBD ECU Scanner » Torque Discussion / Ideas » Problem with custom fuel rail pressure PID

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Author Topic: Problem with custom fuel rail pressure PID
JuliK
Member
Posts: 1
Post Problem with custom fuel rail pressure PID
on: December 7, 2020 (GMT)

Hello,

i have a problem with PID 23. I want to display my fuel rail pressure in bar, but the preset PID in the app only allows me to display it in kPa.

I tried to get around this by creating a custom PID 23, but the data it returns is nonsense (jumps around between 12,000,000 – 37,000,000kPa at idle when it should be stable at around 25,000kPa). The equation i used is ((A*256)*B)10.

I was hoping to simply convert the kPa output to bar by setting a x0,01 multiplier, but this obviously doesnt work if the kPa output is wrong.

Did i miss something? Is there any way to find out what equation is used in the preset fuel pressure PID (which is reading correct values)?

My car is a 2010 Audi A5 3.0TDI

Thanks for any help!

cintakc
Member
Posts: 1556
Post Re: Problem with custom fuel rail pressure PID
on: December 7, 2020 (GMT)

(A*256+B)*10 – original formula kPa
(A*256+B)*10*0.01 or (A*256+B)*0.1 bar

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