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Old 09-27-2002, 10:52 AM   #1
z&cobb
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Join Date: Nov 2001
Chapter/Region: MAIC
Location: Mountains of Maryland
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Default I/M Monitor O2 "Not Ready" for how long?

Anyone know how long it takes for the O2 I/M monitor to go from "Not Ready" to "Ready"?

After clearing a cat ineff code (P0420, Catalyst System Below Threshold), I have driven on some interstates at sometimes 60, 70, 80 a burst to 90. I have put on 160 miles since clearing the P0420 code.

Is there some procedure which triggers the monitor to do a test? Like 60 mph plus or minus 5 in 4th gear?
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Old 09-27-2002, 03:33 PM   #2
Jon [in CT]
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Try cruising at 55 mph (I know that's dangerous on some interstates).
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Old 09-27-2002, 05:24 PM   #3
z&cobb
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Quote:
Originally posted by Jon [in CT]
Try cruising at 55 mph (I know that's dangerous on some interstates).
Extremely hard to do. I'll give it a week to reset, then I'll find a place and time to do 55 safely. Just me and the deer population.
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Old 09-27-2002, 08:10 PM   #4
Jon [in CT]
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There are two Subaru TSBs that are applicable to 2002 Subarus and might have the answer to your question. Maybe your dealer will fax you copies or, at least, let you read them (I haven't seen them, yet, so I can't tell you what's in them).

11-68-01 ON-BOARD DIAGNOSTIC SYSTEM CHECK DURING STATE EMISSION PROGRAM
11-66-02 STATE EMISSION TESTING
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Old 09-28-2002, 10:32 AM   #5
z&cobb
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Member#: 12344
Join Date: Nov 2001
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Location: Mountains of Maryland
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2002 2JC
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Quote:
Originally posted by Jon [in CT]
There are two Subaru TSBs that are applicable to 2002 Subarus and might have the answer to your question. Maybe your dealer will fax you copies or, at least, let you read them (I haven't seen them, yet, so I can't tell you what's in them).

11-68-01 ON-BOARD DIAGNOSTIC SYSTEM CHECK DURING STATE EMISSION PROGRAM
11-66-02 STATE EMISSION TESTING
Perhaps my experience will be helpful in the future when people start taking in their cars for OBD-2 "emissions" testing.

All I did was drive with lots of acceleration and mostly kept the car over 2500 rpms for about 200 miles. The high flow cat in the TXS exhaust probably got hot enough to work. Maybe this is why Shiv put a cat in the downpipe.

All monitors are "Ready" now. Recap: TXS stg 2 with TXS TMIC and stg 2 program, 16.5 max.
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