Just a quick one?
 

Hi my car (04wrx) has been showing trouble code p0031, 02 heater circuit recently. What symptons would you expect to see with this fault?
The car has a hesitation loss of power around 2500-3000rpm before it comes onto boost, would this make sense?
I have changed the sensor and still no luck so im guessing it must be the wiring or control unit.

Many thanks

I had that same fault code on my old bugeye UK300 but made no effect on how the car ran (my fault was with the wiring, sensor was fine)

I also had a similar hesitation that was down to the MAF sensor. I gave it a clean up and cured the problem. Could be worth a try?

what dv you got on it bud ??

Hi thanks, i have also changed the MAF sensor but to no avail. Im gonna check the relay and wiring tomorrow, where abouts was your wiring problem?
I have the standard recirc valve fitted so doubt thats gonna be it.

Cheers