Idle issues, Stalling, P012b, P012c

[KodiaKSE]

2011 Audi S4 Prestige
Mods:

Roc Euro Intake
AWE Track exhaust
AWE Downpipes

Car runs ok most of the time, but sometimes it has hesitation when I boot it. Feels flat on power. Also, codes p012b P012c. Supercharger inlet pressure sensor downstream of throttle valve. I replaced the map sensor that’s before the throttle valve recently, so I assume downstream of throttle valve is the 2 maps on the side of the blower? Also the car is randomly stalling while stopped. It will idle normal at 800 rpms then slowly climb by itself to 1400 rpm, hold for a few seconds and fall flat on its face and stall. When I try to interfere with the gas pedal there’s no response or saving it from stalling. Anyone else having similar issues? Want to get this drivability issue sorted before I throw a tune at it. I have a video of the stalling if needed. Thank you.

[Envy187]

Mileage? Videos/footage showcasing the issue at hand are always appreciated. [up]

[KodiaKSE]

Will post video when I get home. I’m stupid as how to do it on my phone. Mileage is 130,000 also forgot to mention, 6mt car. Thanks for the response.

[vitopat]

2011 Audi S4 Prestige
Mods:

Roc Euro Intake
AWE Track exhaust
AWE Downpipes

Car runs ok most of the time, but sometimes it has hesitation when I boot it. Feels flat on power. Also, codes p012b P012c. Supercharger inlet pressure sensor downstream of throttle valve. I replaced the map sensor that’s before the throttle valve recently, so I assume downstream of throttle valve is the 2 maps on the side of the blower? Also the car is randomly stalling while stopped. It will idle normal at 800 rpms then slowly climb by itself to 1400 rpm, hold for a few seconds and fall flat on its face and stall. When I try to interfere with the gas pedal there’s no response or saving it from stalling. Anyone else having similar issues? Want to get this drivability issue sorted before I throw a tune at it. I have a video of the stalling if needed. Thank you.

I'm throwing the P012b code too. But my car runs perfectly fine. whenever i put it into park my idle gets really rough. I've been doing some research on it and im 90% certain that its the LPFP.

[fatboy613]

Did you ever get this resolved?

[Salvage_B8_S4]

What was the solution? I'm getting a P012B as well and I can't figure it out. I've replaced all MAP sensors, checked wiring, checked for boost/vacuum leaks with no luck.