[Dpc2u]

I had the same code a week or so after doing my brakes. Started occasionally and then got worse and more frequent after I would clear the code. I also would hear the vacuum pump running a lot more than normal. After a lot of research I changed the pressure sensor located In the vacuum line directly under the master cylinder. If even a few drops of brake fluid drip onto the sensor wire connector it fries the sensor. I would make sure that is not the issue before doing the actual vacuum pump. Have you done any brake work or fluid change/addition recently?