Question about 2005 Chevrolet Suburban
Posted by Anonymous on
The O2 sensor heater circuit is just what it says it is a heater fo the O2 sensor, it is there to make sure the sensor stays a constant temperature, the sensors like a lot of heat, if the heater is not working the sensor will not give proper info. about the amount of O2 ( oxygen ) in the exhaust flow which could cause the engine to run to rich or lean in either case the engine will not perform as good as it should and can cost you fuel mileage, it the worst case sanario the heater can short to the sensor return wire and cause all kinds of bad things to happen like cook the ECM, i suggest you replace the sensor, the #2 sensor will be the one after the catholic converter.
Posted on Mar 15, 2011
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Posted on Jan 02, 2017
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