Hi,

I fitted a Prodrive downpipe to my 04 STI and for a while was running fine. Recently the engine light came on so I plugged my laptop in and found it was P0037 (Heater control circuit Low - Bank 1 Sensor 2).

I presume this is to do with the rear cat sensor being out due to the downpipe? Is there a perhaps a resistor mod I can do to bypass the sensor? Anyone else had this problem?

Thanks,

Mike

 

Why not just turn the error off with your diagnostic software, do a reset and try again.