It is so unfortunate that some parts stores do not properly train their associates.
P0037 HO2S Heater Control Circuit Low (Bank 1 Sensor 2)
Bank 1 means the cylinder head that has #1 spark plug. In your case, you only have 1 bank.
Sensor 1 is the one BEFORE the cat. Most of the time it is located on the exhaust manifold. Sensor 2 is the AFTER the cat.
Thursday, October 2nd, 2008 AT 3:53 AM