Oh, how frustrating this is. I've told people that you usually want to drive the car for about 50 miles before taking it in for smog.

I've seen shops use this "error code" as a means of squeezing more money out of people thinking there is something else wrong with the car.

 

Oh, how frustrating this is. I've told people that you usually want to drive the car for about 50 miles before taking it in for smog.

You and half the shops in town, it seems. In the end it's not the distance, but how it covers the distance.

I've seen shops use this "error code" as a means of squeezing more money out of people thinking there is something else wrong with the car.

Makes sense to me, since "what's wrong" is that the owner still has some green in his/her wallet.

It's actually a pretty convoluted procedure; you almost need a navigator along to tell you what's next. You just know that's government work...

 

Greg, at some previous time over two years ago, you had posted a much less intense drive cycle than the one in the link above. IIRC, it involved many (but not all) of the measures outlined in the link. I know because I used it two years ago after clearing all of the codes one morning and then passing the emissions test early that afternoon.

It is that time again and I have a pesky knock sensor CEL code.

Now, however, I can't recall what words I searched on to find the post back then. Do you have any idea where your abridged version is and if so, could you provide the link?

Thanks in advance.

 

Happy New Year, Dig.

In all honesty, I can't for the life of me recall posting an abbreviated version. Is there a chance you remember me linking this thread to a different post where someone else had posted the abbreviated version?

That said, there is anecdotal evidence that even this full procedure must be repeated in some rate circumstances, so I would personally be a bit wary of a shortcut, though I suppose if it worked before, it might again, and even if it didn't, you could still do this long one.

Of course that still doesn't give you the info you seek, and for that I am sorry. Maybe a search leaving my name out? Or are you sure you saw it in the 210 forum?

Anyway, best wishes (and also for luck) are yours, always.

 

I recall ohlord posting a procedure years ago.
I never needed it, but was scratching my head how one can come to such procedure written in common words.
Should not tell moderator that this forum has a time limit on searches and older topics are not easy to find.

 

I recall ohlord posting a procedure years ago.
I never needed it, but was scratching my head how one can come to such procedure written in common words.
Should not tell moderator that this forum has a time limit on searches and older topics are not easy to find.

Says you!

Thanks guys. I found it. I even quoted it before for posterity but didn't think to search on myself even though I left a clue to find it the last time.
CAT NOT READY-ON OBD2 READER Post #2

read your codes like for a cel and erase them using the erase function?If so there is the problem it will set all the I/M monitors to not ready.It is part of the non constant emission monitoring system.Even if you had to take a smog test if you have no cel on, you can get by with 2 i/m status codes not ready,and eventually it will after enough proper drive cycles reset itself.
Or if you cleared the codes and need to take a smog test and i/m are not ready,follow----with common sense----
This generic OBDII drive cycle
Begin with a cold start (coolant temperature below 122 degrees F and the coolant and air temperature sensors within 11 degrees of one another). This condition can be achieved by allowing the vehicle to sit overnight, and then by beginning the drive cycle the next day. Most drive cycles will be difficult to follow exactly under normal driving conditions, so the driver should exercise caution, road safety, and courtesy to others.
* Start the engine. Idle the engine in drive for two and a half minutes with the A/C and rear defroster on.
* Turn the A/C and rear defrost off, and accelerate to 55 mph at half throttle.
* Hold at a steady speed of 55 mph for three minutes.
* Decelerate (coast down) to 20 mph without braking or depressing the clutch.
* Accelerate back to 55 to 60 mph at ¾ throttle.
* Hold at a steady speed of 55 to 60 mph for five minutes.
* Decelerate (coast down) to a stop without braking.

As long as your other cat is okay,and it would let you know:thumbsup:
no reason to be afraid
:bowdown:

emissions

 

About 2,770 results (0.51 seconds)
https://www.google.com/webhp?source...1CHFX_enUS591US591&ion=1&espv=2&ie=UTF-8#q=+Drive+Cycle+Readiness+benzworld.org
1,470 results from benzworld alone

NOT BAD