OBDII Readiness Cycle.....it worked for me
#20
Race Director
I've used this process (BMW from ECobb) twice now and recommended it to others who've said it worked for them too.
I think ECobb posted the link in the DIY forum a few months ago.
#21
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thanks bill....perhaps we can share a cup of coffee again. As an update my CEL fired 20 miles after the test. I will be viewing orange for the next year or until Turbowerx comes to my rescue.
Cary
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#22
Race Director
You need a reader to see what code it's throwing?
#23
Burning Brakes
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I seem to recall that it is just "on hold" during the times of exceeding the RPM or speed, but I am still trying to get the codes to set to ready after numerous informal "Italian tune-up" sessions with the guidelines in mind, and have set some but not set all to ready....
#25
Here is the procedure I followed (posted by ecobb993 on 10/18/03) under subject "failed california emissions".
Kary,
That was my entry in response to jstahmann's need to run through the "readiness cycle". Our ever diligent fed & state smog patrol made sure that their evil constituents don't try to fool them by reseting the emissions trouble codes and dashing to the inspection station for a quick read before they trigger again.
At the same time the OBDII cpu codes are reset, the "readiness codes" are also reset. The readiness code indicates whether each of the 8 system sensors have completed it's diagnostic check. So the inspection station doesn't see a trouble code but also sees that the readiness code is off (actually it reads more than "0").
Once the CE light is cleared the following readiness cycle can be followed to reset the code or you could drive the car for a while in a variety of situations that would allow each system to do it's thing:
Start engine, idle cold for approx. 2 min, 10 secs.
Accelerate to 20-30 MPH, Maintain steady speed for approx 3 min, 15 secs.
Accelerate to 40-60 MPH, Maintain steady speed for approx 15 mins.
Decelerate and come to a stop. Idle in gear for approx 5 mins.
Following the start engine phase the sequence of test conditions may interchange.
routine will be discontinued whenever:
Engine speed exceeds 3000 RPM
Large fluctuations in throttle angle
Road speed exceeds 60 MPH
Hope this helps y'all.
The route that I took did have some starts and stops in it, but as long as you follow the instructions not to exceed 3k rpm, don't make large throttle fluctuations and don't exceed 60 mph until complete, it worked (as least for me).
Good luck and let me know if there are any other questions.
I'll post some pics and details of my drive from BOS to ATL ASAP.
Regards.
Jim
Kary,
That was my entry in response to jstahmann's need to run through the "readiness cycle". Our ever diligent fed & state smog patrol made sure that their evil constituents don't try to fool them by reseting the emissions trouble codes and dashing to the inspection station for a quick read before they trigger again.
At the same time the OBDII cpu codes are reset, the "readiness codes" are also reset. The readiness code indicates whether each of the 8 system sensors have completed it's diagnostic check. So the inspection station doesn't see a trouble code but also sees that the readiness code is off (actually it reads more than "0").
Once the CE light is cleared the following readiness cycle can be followed to reset the code or you could drive the car for a while in a variety of situations that would allow each system to do it's thing:
Start engine, idle cold for approx. 2 min, 10 secs.
Accelerate to 20-30 MPH, Maintain steady speed for approx 3 min, 15 secs.
Accelerate to 40-60 MPH, Maintain steady speed for approx 15 mins.
Decelerate and come to a stop. Idle in gear for approx 5 mins.
Following the start engine phase the sequence of test conditions may interchange.
routine will be discontinued whenever:
Engine speed exceeds 3000 RPM
Large fluctuations in throttle angle
Road speed exceeds 60 MPH
Hope this helps y'all.
The route that I took did have some starts and stops in it, but as long as you follow the instructions not to exceed 3k rpm, don't make large throttle fluctuations and don't exceed 60 mph until complete, it worked (as least for me).
Good luck and let me know if there are any other questions.
I'll post some pics and details of my drive from BOS to ATL ASAP.
Regards.
Jim
Christopher
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#26
Racer
Long shot, but any idea if this is Porsche's standard process? I have this issue on my 2012 Panamera Turbo. Won't pass emissions because the catalyst is "not ready."
#27
Rennlist Member
The beauty of Rennlist - the gift that keeps on giving. I'm going to try Jim's method tomorrow morning. I hope it works!
#28
Burning Brakes
In NJ inspections are required every two years, and my car almost always needs codes reset. So I’ve used this drive cycle many times and it works. That said, it usually takes multiple attempts to work. And stops and slow downs to take corners, etc, doesn’t impact the cycle.
#29
Rennlist Member
Todynot -
Thanks for your response! It’s nice to know when things and certain methods work out. I will be doing this cycle tomorrow morning. I’ll let you know how it goes. Thanks, again, for verifying that this works!
Thanks for your response! It’s nice to know when things and certain methods work out. I will be doing this cycle tomorrow morning. I’ll let you know how it goes. Thanks, again, for verifying that this works!
#30
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Loren
Systems Consulting - Automotive Electronics
Specializing in Porsche cars
http://www.systemsc.com/
Loren
Systems Consulting - Automotive Electronics
Specializing in Porsche cars
http://www.systemsc.com/