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Question about my sisters hyundai, help before she pays a mechanic way too much.

us74k5

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My sisters 2002 Hyundai santa fe will not pass inspection. It throws the P0037 code, which is P0037 HO2S Heater Control Circuit Low (Bank 1 Sensor 2)

Am I correct that this is the O2 sensor behind the cat?
 
Also, any idea if i can tell with that code if it is the left or right one?
 
bank 1 = first 3 or 4 clyinders in firing order like 1234 or 123

sensor 2 = after the cat on the same 1234 or 123

how many miles ? if around 80k or more then i would clear the codes with a scanner as battery drop wont do it . and change the sensor . the heater part of the cirkit is getting worn out.

and hyundia best go to dealer for it. as i have had lots of problems getting the correct plug end or wire length in aftermarket.

and check if its cali or federal emmisions on the tag under the hood. and take the vin # with ya if you go to the dealer thay will ask for it.
 
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