Trouble code P0638 bank 1

It was Dirty and loose connection. Bank 1 and bank 2 simply refer to either side of the engine. Most commonly, bank 1 houses the front most cylinder on the engine cylinder 1, and bank 2 is the opposite side of the engine. Suzuki Grand Vitara F9QB 2006 Thanks for watching! Be sure to LIKE & SUBSCRIBE! Professional Tool:https://bit.ly/2UYoNbY #bank1 #p0638 #tigernor