I have an 03 Sonata v6 and got obd code p0036 heater control circut bank 1 sensor 2. Anyone know where it is located and how to check the sensor or is it just bad and need replaced. The car was bought new and first time for any troubles. It only has 62000 miles not bad for a 8 year old car.

 

It's in the side of engine that has cylinder #1 (Bank 1), and it is the sensor after the catalyst (sensor 2)... that be the bulkhead side of engine.

Go get new sensor at dealer,, may not be in stock though, but you might get lucky.. take Hyundai part number and chek your local Kia dealer too, as Sonata is Optima in the Kia line.

I want to say there is an OX logic program, engine hesitation update, and trans shift feel update available if they not been done.