Posted this up in the tech forum help but I wanted to post here also to get more feedback.

Well I have a check engine light on so I hooked up my Peake Research code reader. BTW my car is the I6 97 528i with 134k miles.

1. 11- Camshaft sensor
2. 1F- Fuel injector cyl 5
3. E9- Automatic start output
4. EA- Automatic start input

For 1. is this the same as Camshaft positioning sensor because theres other codes that specifically say Camshaft positioning sensor. I'm not sure if I should replace both but the code is for Camshaft sensor.

For 2. I was going to test the coil pack and see if I'm getting the right resistance first before I try to test the injector which I think I'll need a noid light? Do the injectors usually go bad? What other way is there to check the injector to make sure they're good? Resistance test also?

For 3. & 4. I have no idea.

I do have a bently manual so I have more reading up to do. If anyone can help me out I would appreciate it. TIA!

I don't have a Peake tool, but from what I understand, the codes are hexadecimal values of the BMW DTCs. So 11=17, 1F=31, E9=233, and EA=234. Maybe that will help.

Which Peake tool do you have?

The peake tool is set up that way so all you do is look up the characters.

Well today I checked the Injectors, coil pack and spark plugs. All resistance are within spec. I'll get some injector cleaner and clear the codes and see what happens.

The peake tool is set up that way so all you do is look up the characters.

Yea, the Peake tool is showing you the BMW DTCs in hexadecimal format. Unfortunately, the Peake code table is a bit cryptic. That's one reason I don't have one. For example, what does "Automatic start output" mean?

Anyway, it seems reasonable to clear the codes and see if they return.

I don't have a Peake tool, but from what I understand, the codes are hexadecimal values of the BMW DTCs. So 11=17, 1F=31, E9=233, and EA=234. Maybe that will help.

Which Peake tool do you have?

The hexadecimal thing is an interesting bit of informaiton.

I suspect that's the way it's stored on the ECU. Probably an 8 bit computer.

The OPs codes don't match up with the Peake code sheet I have. But it might be my lack of experience with Peake readers.