andrewhake

Why isn't this for 1996 vehicles and newer?

danvuquoc

OBD2 has had various improvements since 1996, including some evap changes in the amount of leak allowed through the gas cap. Likely the 1996 OBD2 leak variance is more than what California BAR allows. If thats not it, its probably something along those lines.

g0g3tt4

Nor Cal only smogs with sale or change of title outside the family. Non impacted county.

tbkonwso

just register out side of county where you don't need to smog... never pay a cent. Cali sucks

whiteflash

Curious, does the OBD2 Emissions read from the primary o2 sensor, or secondary o2 sensor? I have my secondary disabled through the ecu.

TougeHorseman

Or both?

Noodler

because not all 96-99 are obd2. Some were actually missing certain equipment. Some still obd1. They do not want to make an exceptions list for those 96-99 vehicles that comply with the 2000+ obd2

Voodoo_S2K

My understanding is the ECU uses the primary O2 sensor. The secondary O2 is used to verify the cat is working properly.

Voodoo_S2K

Please do, as it is my understanding that the plug-in only test doesn't go live until September.

rob-2

This, plus what can be 'measured' in 96 might not pass the standards they want to enforce.