Originally Posted by Th Dude
While the CEL was on, it was not blinking.
Interestingly, the "misfire" self diagnosis shows as "complete" and no further codes have been logged...as of yet.
Here is the status of the various "readiness indicators":
Misfire - complete
Fuel system - complete
Comprehensive component - complete
Catalyst - not complete
Evaporative system - not complete
Secondary air system - not complete
Oxygen sensor - complete
Oxygen sensor heater - complete
I believe someone has touched upon this but what happened is when you cleared the misfire error code this reset all readiness monitors to incomplete.
It takes a 'drive cycle' to set these to complete.
Some MYs and some models are more difficult to get this done as the drive cycle is weird.
My info is one can have only 2 readiness monitors set to incomplete and none of the critical ones.
Guess which ones are critical?
Your car had 2 of the above set to incomplete.
Even though the car is clean because of the above incomplete monitors the tech can't give your car a stamp of approval.
You'll have to drive the car some.
This can be tricky though. The tendency is to get in the car and drive it like is playing fast and furious in real life.
This may (probably) won't work.
The drive cycle is a rather sedate drive.
For my 03 Turbo and my 02 Boxster what I have found works for me is to start the engine cold. Let it idle until the secondary air injection pump shuts off and the idle speed smooths and drops to near normal.
Then I drive the car around on surface streets trying to reach and maintain a steady speed of say between 30 and 45mph for some distance. How much distance? Well blocks at least.
Then once the car is warmed up I get on the freeway and drive at a constant or near constant speed of however fast the traffic allows.
I avoid hard acceleration and such but I do run the rpms up to 3K and nearer 4K in some cases. I just avoid full throttle hard acceleration runs that's all.
Then after 25 or so miles I drop off the freeway and drive on surface roads to my office.
The above just so happens to be my work commute.
Now there may be a shorter drive cycle -- in fact I know there is for some models because a tech told me for the GT3 it's drive cycle can require just 15 minutes of driving but this is with a computer signaling the tech/driver what to do, when to turn on the lights, A/C, turn them off, etc -- but I do not know it for the Turbo. BTW, the techs tell me in the case of the 996 Turbo the readiness monitors are tested twice if the drive cycle is long enough.
Before I take my Boxster or Turbo in for a smog check I drive the car like I described above and even then afterwards I use an OBD2 code reader/data viewer tool to read the readiness monitor statuses to ensure they are all set to complete.
Do not clear any codes, even if the CEL is off, for this resets the readiness monitors back to incomplete again. If the CEL is on your car/engine has a problem that must be fixed before it can pass smog.
Also, I try to avoid shutting off the engine, letting the engine idle while I arrange to have the car smogged.
So, naturally I pick a time when the smog check station is not busy at all so I can just pull in park the car right at the door run in the office and get the ball rolling.
Be sure you fill up the tank with a top tier gas and that it is not stale. I like Shell but Chevron or another top tier gas is ok.