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Old 09-23-2008, 10:49 AM   #1
rage557
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Question 300 miles driven and ECU still "NOT READY"

I'm not sure if theres a good spot for this so mods move it if you like.


As the title says I cleared my P0420 code about 300 miles ago and I still am seeing a not ready. Last time I cleared the codes it only took 10 miles to become ready.

I need to get an inspection done pretty soon and I don't think I can pass this way. Any ideas???
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Old 09-23-2008, 11:56 AM   #2
Cocoa Beach Bum
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According to http://www.vehicletest.state.ma.us/f...iness11-04.pdf:
Quote:
If a model year 1996 through 2000 vehicle is being tested, it can pass its state inspection with as many as two OBDII monitors “not ready.” If the vehicle is model year 2001 or newer, no more than one monitor may be “not ready” for it to pass. All vehicles that fail their initial tests due to catalytic converter efficiency problems (trouble codes PO420, PO422 or PO432) need to complete their checks and show catalyst monitors as “ready” before they can undergo re-tests.
So, if only one monitor is "not ready" then you're all set.
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Old 09-23-2008, 11:56 AM   #3
djoye
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You need to drive at varying speeds. Take it out on the highway and do 65MPH+ for a minute or so.
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Old 09-23-2008, 12:03 PM   #4
express_wagon
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Just get the black rejection sticker then you'll have another 60 days to get it ready. 1st re-test is free.
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Old 09-23-2008, 12:30 PM   #5
nevets87@siu.edu
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buy a tactrix cable and use enginuity to "force pass readiness monitors"
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Old 09-23-2008, 12:58 PM   #6
rage557
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I've got a scan gaugeII I don't think I can force a "Ready" with that.
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Old 09-23-2008, 12:59 PM   #7
rage557
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Quote:
Originally Posted by djoye View Post
You need to drive at varying speeds. Take it out on the highway and do 65MPH+ for a minute or so.
The majority of those 300 miles were highway 75-85mph
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