What is your question?
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What is your question?
MIL came on, scan produced a P0038 code, I replaced the O2 Sensor cleared MIL and it came back on as soon as I started vehicle. What voltage should be measured coming to the heater side of the sensor. I'm getting like 2.5vdc
2 Replies
when the light re appears that quickly, there is an electrical issue. yes, there is a fuse for the o2 heaters. check all the fuses. it may also be a harness issue and needs to be checked as well. Roy
Key on engine off sensor disconnected should have battery voltage at brown/white wire, lack wire gets grounded by the computer to activate the heater circuit. where those two wires attach and go to the sensor check continuity through heater element in the sensor it must have continuity if the sensor is good.There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online