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Fuses for P0031 and P0037

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Old 15 Jul 2018, 03:09 pm
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Join Date: Sep 2007
Posts: 2
Default Fuses for P0031 and P0037

Hello, Trying to trouble shoot HO2S sensors. I read that maybe fuse is blown but don't see that fuse location listed in the owners manual. Its a2007 turbo convertible. Does anyone know which fuse runs the heated part of the sensor? Thanks
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Old 15 Jul 2018, 06:56 pm
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Join Date: Aug 2014
Location: Thousand Oaks, CA
Posts: 7,473
Default Re: Fuses for P0031 and P0037

I would suggest checking the same ground wire for both O2 sensors before checking to see if there are fuses, etc.
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Old 16 Jul 2018, 04:20 am
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Join Date: Jan 2013
Posts: 1,266
Default Re: Fuses for P0031 and P0037

The manual is not very informative, but I believe the power [12v] energizes the o2 heater[s] when the ASD relay is activated. This happens for a few seconds only; if the car isn't started.
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Old 24 Jul 2018, 11:55 pm
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Join Date: Feb 2015
Location: South Bend Indiana
Posts: 80
Default Re: Fuses for P0031 and P0037

I have a 2004 Turbo Lite. I had all kind of error codes come and go. Both Banks showing Hi voltage and low voltage error. Misfire codes. I could clear them and they would stay gone for a while.

I ended up having two issues. First was PCM. I replace it. It seemed all right.

Then after about 10 miles of driving the CEL came back on. The errors were different codes but pointed towards the 02 sensors being bad. I replace them and around a thousand miles later, I still have no issues.

The Turbo cars seem to have the most issues with PCM's from what I have read and experience. The turbo is only a few inches away from the PCM. It gets very hot!

If you have never replaced the 02 sensors I would start there. it;s cheaper. If you need a PCM Myckee is your guy. But I think he is on vacation.
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Old 25 Jul 2018, 06:45 am
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Location: Lake Wales, FL
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Default Re: Fuses for P0031 and P0037

I'm pretty sure Myckee recently posted that he's not going to be home until sometime in September. But if you DO need a PCM, he's definitely the go to guy here.
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