Smog check in CA

[hucqym]

so my understanding is that the P0xxx codes are the standardized codes and mandated by law while P1xxx are the additional porsche specific codes. Does that mean that smog check will pass the OBD functional test even if P1xxx codes are present in memory (w/ or w/o CEL on)?

[JFP in PA]

so my understanding is that the P0xxx codes are the standardized codes and mandated by law while P1xxx are the additional porsche specific codes. Does that mean that smog check will pass the OBD functional test even if P1xxx codes are present in memory (w/ or w/o CEL on)?

I think that if you have an active or pending code, you are toast; but you may want to check the California DMV web site for details on where the lines are on this subject.

[logray]

Any code that produces a CEL/MIL will not pass, in fact they won't even bother smogging it until the CEL is corrected. Most places won't charge you if this is the case (or at least dont bother bringing in the car if there is a CEL).

I'm not 100% but I believe with a pending code and no light, you can still pass SMOG, assuming all of the other OBD readiness and sniff tests pass.

And you cant just clear the light because then that resets the readiness, which requires more driving which will likely reset the light unless the problem has been fixed.