07-01-2015, 08:35 AM
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#1
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Registered User
Join Date: May 2013
Location: Orange County, California
Posts: 266
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California OBD Inspection
So for 2000 and newer vehicles, they're exempt from the tailpipe test and only subject to the computer test (and visual, of course). Does anyone know exactly what kinds of data the test computer pulls from the car's OBD2 to determine whether it'll pass or fail?
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07-01-2015, 10:08 AM
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#2
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Registered User
Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,273
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Quote:
Originally Posted by hancock1701
So for 2000 and newer vehicles, they're exempt from the tailpipe test and only subject to the computer test (and visual, of course). Does anyone know exactly what kinds of data the test computer pulls from the car's OBD2 to determine whether it'll pass or fail?
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Google "I/M Readiness test"
__________________
“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
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07-01-2015, 12:18 PM
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#3
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Registered User
Join Date: Jan 2014
Location: Albuquerque, NM, USA
Posts: 730
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It's just looking for codes. No codes = pass
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Kent Christensen
Albuquerque
2001 Boxster
2007 GL320 CDI, 2010 CL550
2 BMW motorcycles
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07-02-2015, 09:29 AM
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#4
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Registered User
Join Date: May 2013
Location: Orange County, California
Posts: 266
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So as far as I understand, the test would look for codes and check readiness monitors as well. So if I recently clear the codes, all the monitors reset as well, and I will need to get them to be "Ready" in order to pass the test?
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07-02-2015, 09:56 AM
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#5
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Registered User
Join Date: Oct 2014
Location: Santa Rosa, CA
Posts: 520
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Yes, you need at least 5 (or 7?) monitors "ready" to pass the test.
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2003 2.7 Boxster - Tiptronic - Carrera wheels - OBC - Red calipers - Cat pipes - Modified muffler - Rear speakers - K&N - Litronics
2006 V6 Mustang
2008 ML 350
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07-02-2015, 10:55 AM
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#6
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Registered User
Join Date: Jan 2014
Location: Albuquerque, NM, USA
Posts: 730
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You can't beat them by clearing codes.
Codes only go away when you fix the problem ... which is the point.
__________________
Kent Christensen
Albuquerque
2001 Boxster
2007 GL320 CDI, 2010 CL550
2 BMW motorcycles
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07-02-2015, 12:38 PM
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#7
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Registered User
Join Date: Sep 2010
Location: Foster City CA
Posts: 1,099
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Quote:
Originally Posted by hancock1701
So as far as I understand, the test would look for codes and check readiness monitors as well. So if I recently clear the codes, all the monitors reset as well, and I will need to get them to be "Ready" in order to pass the test?
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Yes so long as the code doesn't reappear and all but the EVAP monitor are ready. Just did this with intermittent 0430 code
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07-02-2015, 12:43 PM
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#8
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Registered User
Join Date: May 2013
Location: Orange County, California
Posts: 266
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Quote:
Originally Posted by thom4782
Yes so long as the code doesn't reappear and all but the EVAP monitor are ready. Just did this with intermittent 0430 code
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Thanks, I have an intermittent P0430 as well. Usually happens when in heavy traffic. I used a scanner to confirm and saw that the O2 sensor after cat voltage drops or fluctuates at idle, but not when in higher RPM.
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07-02-2015, 01:17 PM
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#9
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Registered User
Join Date: Apr 2007
Location: Bay Area
Posts: 524
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Quote:
Originally Posted by thom4782
Yes so long as the code doesn't reappear and all but the EVAP monitor are ready. Just did this with intermittent 0430 code
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Did you pass the tet with the Evap monitor not ready?
__________________
2008 Boxster S PDE2
02 Boxster S Blk on Blk(Stock for the Wife)
88 turbo S (My Toy) slightly modified
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07-02-2015, 04:53 PM
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#10
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Registered User
Join Date: Sep 2010
Location: Foster City CA
Posts: 1,099
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I don't recall, but here's a quote from the pass / fail criteria:
"The failure criteria include ...OBD system reports incomplete readiness monitor(s) as specified below...Gasoline-powered vehicles model-years 2000 and newer with any incomplete monitors, excluding the evaporative system monitor
Last edited by thom4782; 07-02-2015 at 04:56 PM.
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07-02-2015, 05:04 PM
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#11
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Registered User
Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,273
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Quote:
Originally Posted by thom4782
I don't recall, but here's a quote from the pass / fail criteria:
"The failure criteria include ...OBD system reports incomplete readiness monitor(s) as specified below...Gasoline-powered vehicles model-years 2000 and newer with any incomplete monitors, excluding the evaporative system monitor
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According to current CA BAR published data, the following is reason for emissions failure:
(A) Gasoline-powered vehicles model-years 1996 through 1999 with more than one (1) incomplete monitor
(B) Gasoline-powered vehicles model-years 2000 and newer with any incomplete monitors, excluding the evaporative system monitor
(C) Diesel-powered vehicles model-years 1998 through 2006 with any incomplete monitors
(D) Diesel-powered vehicles model-years 2007 and newer with any incomplete monitors, excluding the particulate filter system monitor
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“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
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