This is an evap code for the pressure sensor in the system having too high
an input. You will need a comprehensive trouble tree to diagnose this,
Alldata is one source.
> Can changing to a high flow air filter cause this code to trigger? If not,
> what should I be looking or testing for to solve this problem? It's
> occurring on a 2003 Buick Rendezvous CXL with 53000 miles.