check engine lite on code reads...help??

[damage inc.]

the code is p0204 injector circuit malfunction cyl 4 anybody have any ideas what could cause this??? any help would be useful i checked the plug seems to be on a tight with a good connection but it was dark out so i didnt look into it very deep

 

[tomustang]

get a multimeter and test the voltage on the injector, and make sure you got the right one. usually a misfire code will come up too for a injector fault