Question about Subaru Impreza WRX STi
P1037 the Oxygen sensor is loose or the plug up higher on the tranny side could be loose.
Are you sure its not p0137?? That's the rear 02 sensor low voltage. It might be a loose connection either under the car on the left side right by the back of the trans or possibly at the ecm which is under the carpet of the passenger feet you'll need to pull up the carpet and remove a metal shield that has 4 ten MM bolts some times just unplugging these and plugging them back in will fix the connection.
In any case - P1037 does not come up as a valid code.
Erase the codes, and then see if it pops up again.
P0171 = Basically this means that an oxygen sensor in bank 1 detected a lean condition (too much oxygen in the exhaust). Bank 1 is the side of the engine that has cylinder #1.
A code P0171 may mean that one or more of the following has happened:
Posted on Sep 12, 2009
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Posted on Jan 02, 2017
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