 | | | O2 sensor mazda protege
Asked Jan 10, 2009, 08:40 AM
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24 Answers Code reader gives code p0037 - o2 sensor bank one. Is bank 1 upstream or downstream? 1.6L Also how do you test an o2 sensor?
Thread Summary |
24 Answers
 | Ultra Member | |
Jan 10, 2009, 09:08 AM
| | | The P0037 code is for the heater element for the O2 sensor. Not sure if your car has one or not, but some vehicles have a separate fuse for heater; check your fuse box first. If nothing, then you'll need to replace the whole O2 sensor. | | | | Junior Member | |
Jan 10, 2009, 09:20 AM
| | | Is this a normal fuse in the main box? And if replacement is needed how do I know which one? | | | | Ultra Member | |
Jan 10, 2009, 09:31 AM
| | | Do you have the owner's manual? That should list the fuses & their purposes. If a fuse is bad, the little metal piece inside of it will be broken; if it's good, the piece will still be intact. | | |  | Senior Cars & Trucks Expert | |
Jan 10, 2009, 09:48 AM
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Bank 1 is upstream. There's no need to worry about fuses, here. Here's how to replace the sensor: http://www.askmehelpdesk.com/cars-tr...tml#post223376
If you haven't contaminated the pigtail connector, the code is likely correct. Stay away from Bosch and other generic replacement sensors. Best to go with a Mazda replacement. | | | | Ultra Member | |
Jan 10, 2009, 09:51 AM
| | | If the heater element has a separate fuse, then that should be checked prior to replacing the sensor. The element is what's setting the code. | | | | Junior Member | |
Jan 10, 2009, 10:05 AM
| | | Thanks for the help. What do you mean by "contaminated"? I'm trying to fix a problem that was not fixed properly before. One sensor was replaced with a universal but he did a rig job (bad connections). So then another guy fixed it "right" by soldering the wires. I don't have a separate fuse but checked them all with a test light to be sure. I don't now if the wires were fixed right but it was a cheap o2 sensor the never worked. I want to be sure whichoneisthrowing a code before I spend $225.00 for a new one. | | | | Senior Cars & Trucks Expert | |
Jan 10, 2009, 10:06 AM
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What car has a separate fuse for the oxygen sensor's heater element? Never seen or heard of anything like that.
The heater just stabilizes the sensor's output. We are talking resistances of only 10 to 40 ohms. | | | | Ultra Member | |
Jan 10, 2009, 10:06 AM
| | | If he rigged the wires, that's probably your whole problem. | | | | Ultra Member | |
Jan 10, 2009, 10:09 AM
| | | Quote:
Originally Posted by txgreasemonkey  What car has a separate fuse for the oxygen sensor's heater element? Never seen or heard of anything like that. | '97 & up Cavaliers; in the fusebox located inside the driver's door paneling. Just as surprised as you were when I found that out! | | |
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