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Old 09-08-2005, 03:12 PM   #1
pblakey2003
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ODB Code

my check engine light came on and I used my code reader to find out what it is. I got a code:

P0420 Catalyst Efficiency Below Threshold

This is my cat converter, right? I was going to change it anyway and put a performace one on soon. Is this code talking about the converter or a O2 Sensor?
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Old 09-08-2005, 03:26 PM   #2
BlazerLT
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Re: ODB Code

Cat convertor needs changing.
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1995 Factory Blazer Service Manual for sale, PM if interested.
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Old 09-09-2005, 01:24 PM   #3
pblakey2003
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Re: ODB Code

thanks, thats all I need to know
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