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Old 04-28-2009, 05:13 PM
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Re: 2001 Blazer p0140 code

Quote:
Originally Posted by bigbluesteve View Post
I'm sure this topic has been discussed already. I can't get this code to clear. If someone could direct me to the thread that I'm sure is already out there that would be great.

Thanks
Fire up the old search engine.

The code is telling you the H02S sensor is not switching enough voltage.
Does the code set engine cold or hot?
Any other codes?
Could be bad 02 sensor or wiring or 02 sensor heater circuit.
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