Volvo s80l throttle voltage

As you said, you need to go to the 4s shop to read the specific fault code with a decoder.

Then according to the fault code analysis, and then test the gasoline pressure.

As you said, the sensor problem should not be serious. This sensor has nothing to do with ignition. I suggest you repair it as soon as possible.

I hope I can help you. If you have any questions, please ask.