this engine is in a blue bird bus its setting a active code 652-7 engine injector cylinder #02:not responding properly?. other than setting warn light and audio signal there is no symptom noticed. about a year ago a bus garage replaced injectors 1,3,6 and an ecm for same condition not the code but the warn light being on i don't know what codes were present then but it didn't have any running problems or so I'm told. i can run cutout test, fuel delivery test, solenoid test passes all test runs good? is this code a amperage draw problem? i hate to replace #2 injector and have same problem especially when I'm not sure of the problem i have. we have Cat ET program but not SIS, hoping someone can head me in right direction.this is in a 2008 blue bird bus eng #C7S04566. Thanks Dan

Dan Solomon
Owner/Technician
Solomons Auto and Truck Repair
Findlay, Ohio, USA