I have a FE IC bus . The other day the driver went to back her bus up . Bus went a few feet and died . Wouldn't restart but sounded like it wanted to . I replaced fuel filter and got bus running . Did a scan and said numbers 1 and 2 injectors low or grounded . Sent bus out and driver said no power . Next day bus wouldn't start again .Got I to run and died checked again and said all 6 injectors were grounded or low but had a code 22 saying CPS sensor bad . Sound like it could be the problem ? Thanks