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International Automotive Technicians Network
Re: How do O2 heaters work
Posted to Technical Theory Forum on 10/18/2007 4 Replies

Nice Capture Harv :)

I have seen techs chase ghosts before because they did not realize the PCM would shut down the O2 heater control if it saw no current flow for a specified period or time. I know on some models you only have a few seconds to check for hea... Login to read more.

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