CAT error code 18806 "out of range". Is there anyway to tell if this is a bad sensor

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02-23-2008, 08:20 AM

McTTR

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CAT error code 18806 "out of range". Is there anyway to tell if this is a bad sensor

or bad CAT? Is it the O2 sensor that plugs into the side of each CAT? Thx.

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02-23-2008, 08:42 AM

TTschwing

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Usually the 02 sensor...>>

Unless you're running a high flow CAT Rob...

Cats themselves rarely go bad, but we're seeing increased 02 failures as the cars age and accumulate miles..

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02-23-2008, 09:35 AM

::blinde::

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yep...just replaced my post cat sensor 4 days ago...90k miles. Sensor was $160!

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02-23-2008, 10:15 AM

Cruzad3r

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wow u could've bought two for that price

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02-23-2008, 11:44 AM

McTTR

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I've run a high-flow Miltek for several years without a problem. I wonder if they are going bad?

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02-23-2008, 12:52 PM

TTinCT

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if it is an early milltek it could be a 100cell>>>

they were problematic (spoke to Stratmosphere about that and they confirmed it)....

If it is a 200cell, you should be fine....if it was bought new, you should see if there is any warranty on it....

Could also just be a bad o2 sensor....