Jimm 8/18/2012P0170 indicates a malfunction in the PCM control of the air-fuel ratio. Bank 1 is the side of an engine that has cylinder 1.
Here are the possible cause of P0170
• Dirty or defective MAF sensor
• Vacuum leak
• Defective fuel pressure regulator
• Defective O2 sensor
• Oil contamination in the cam/crank sensor wiring or MAF/O2 sensor connector