I have an 03 BB A3RE with an ISC 285HP.The problem is the bus ran just fine went on field trip and it started to go up a little hill and started to lose power, they had to switch busses but were able to drive bus back to yard. It has an active fault code :Fuel control valve / failure mode unknown. also Inactive code:controller #2 / Bad intelligent device. Is the fuel control valve the same as injector control valve? What should I be looking for? Thanks for any thoughts you can share with me.