I'm an idiot. I have a 2001 xj. I installed a header because I had an exhaust leak, after installation I felt like my cherokee did not have quite as much power so I was wondering if all of my injectors were firing because I noticed a few had cracked wiring insulation(i did not have a check engine light). I started the engine and pulled the first connector to injector #1. The engine started running very bad. I restarted the engine and it still runs very bad and throws the 0201 and 0301. I replaced the connector and the injector. I pulled and checked the spark plug. I checked the ground and it has continuity between the injector connectors.

Thank you.

Nate

 

The codes are from you pulling the injector so go ahead and drive it.

 

I bought a code reader last night. I cleared the codes and fired it up still giving a 0201 and 0301.

 

The 201 code http://www.obd-codes.com/p0201
the 301 code http://www.obd-codes.com/p0201
the 301 code will clear itself after fixing the 201. Go through the procedures listed to test your injector.