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Emissions test failure - no OBDII communication

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Old 03-08-11, 09:53 AM
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mb12345
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Default Emissions test failure - no OBDII communication

I have a '97 ES300 (131K miles). My Connecticut Emissions test failed today due to no OBDII communication. The guy said he couldn't get a reading. He suggested it could be as simple as a blown fuse or as complex as the computer itself.

I did some search on google and various forums. It was suggested to check the cigarette lighter as an indicator of a blown fuse. My cigarette lighter works fine. I use that to charge my cellphone daily. I have not replaced my battery either. I had a dead battery about 3-4 months ago and had to take a jump start. Other than that, there have not been any issues with the battery. I have not removed the radio or no issues with it either.

What other fuse could I look at? Where would be the location of the fuse? If the fuse is fine, what else do I need to look into?

I would appreciate any help I can get. Thank you in advance!

Last edited by mb12345; 03-08-11 at 10:00 AM.
Old 03-09-11, 07:22 AM
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mb12345
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Does anyone have any suggestions? Which fuse do I need to look at to see if it is a fuse problem? Thanks.
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