Question about 2001 Cadillac DeVille
Obd2 code reads bad H02 heater control circuit bank1 sensor 2. how do I change it and where is it located on Cadillac Deville 2001
O2 sensors are on each side of a v engine before the catalytic converter and one aft if you have two converters then you will have two downstream. Usually the ones closest to the exhaust manifolds go first
Posted on Aug 29, 2014
Normally just replace the HO2S sensor using the correct tool for the job so as not to damage the wiring to the unit as it is wired directly to the ECM unit.
Posted on Feb 09, 2014
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Posted on Jan 02, 2017
hi im wesall o2 sensors are located in the exaust system yours has one before the converter one after if it has duall exaust before the cat on drivers side will be upstream sensor bank 1 after cat right side will be bank 2 sensor 2
ps please rate me
Posted on Mar 28, 2009
First, provided their are no visible coolant leaks and/or loss of coolant with no signs of leaks, I would thoroughly flush cooling system and replace coolant, then check and/or replace thermostat (you can place thermostat in boiling water to check for proper function), if you have tried these 2 steps and still are experiencing overheating you may need to replace your water pump which can be a tricky job if you're unfamiliar and try to do it yourself, however, I could walk you through it if necessary. Also visually check your radiator hoses for bulges, wear ,etc along with heater hoses etc. You may want to also check radiator fins to see if they are dirty/obstructed and clean if necessary. Let me know if I can assist you further and how it works out
Posted on Aug 30, 2009
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