991ff

I have p033 that pop up everytime i reset ecu any help plz
what should i check?

SilverSFR

Diagnostic trouble code (DTC) P0033 stands for “Turbocharger Bypass Valve Control Circuit.” Open or Failure. How are you resetting the ECU? Are you meaning that you are just clearing the code and it comes back? 991.2 Diverter valves are plastic and do fail.

Here are some excellent EVOMS 991 diverter valves from a even more excellent Forum Sponsor FlatSix Motorsports (Top right corner of the forum). As well as great install and troubleshooting videos for them. They are also great at answering questions like the above title topic.

Flat 6 Motorsports by EVOMS - Performance Diverter Valves (991.2 Carrera)

991ff

i reset my ecu with cobb i restat the car and same code pop up and CEL

MingusDew

if it has a tune, the DV are even more prone to failure.