Multiple error codes

Thanks Ken. Can you tell me, facing the engine, which side this one is on and if it's the one on top and closer to the front or the one further back and lower?

Thanks,

Sam

Top or bottom one?

Hi Ken,

Here's what I've done and where I'm at on this:

Originally, I was getting the code p0391. I replaced the sensor on the right side of the vehicle (looking at the engine from in front of the car) and lower of the two.

After this I got the code p0393.

Thinking I had replaced the wrong sensor, I removed the left, lower one and replaced it with the used one I had removed the first time.

Then the codes were p0393 and p0368.

I ordered a new sensor and replaced the left, lower one with the new one, meaning I have now replaced the lower sensors on both sides and haven't touched the upper ones.

Current codes are p0393 and p0365.

In addition to the codes, I've noted during this process, there have been various misfire and lean running codes.

So, give me some expertise on this if you would please.

Thanks so much,

Sam

Okay, getting no reading at the plug. Possibly a fuse, and if so, which one?

Thanks,
Sam

Okay, I may be mistaken.

I checked all the fuses and they're all working properly.

I posted on the Bimmerfest forums and got a couple of responses when I queried which specific fuse was for the sensors. I got the following two replies:

"There is not one. Position sensors are supplied by DME"

and

"I searched yesterday for about an hour and even looked at the wire diagrams and nothing shows its connected to a fuse."

After this I tried a tester light on the plugs, and both showed connection in one of the three prong holes. I retried my multimeter and got nothing which may mean that the cheap meter I have just is messed up.

Where should we go from here?

I looked at the schematics you sent me and couldn't decipher where the wiring goes back to from the sensor, but if I'm getting power through the plugs to the sensor as indicated by the test light, which would indicate that it's not a wiring issue, right? Or could it be an improper ground where the two ground wires come back together?

As I'm sure you can tell, I'm a real babe in the woods on all this, and I'm sorry if I'm asking simple questions. I am trying to learn and am willing to do whatever work is necessary if I know what it is.

Thanks so much,

Sam

Hi Joe,

Yes, all the fuses are good.

I'll get a new multimeter and see how much voltage is running through the plugs and we'll go from there.

Thanks,

Sam

Okay, I'm getting between 20.4 - 21.6 on both sides.

It's the plugs that connect into the camshaft position sensors.

Hi Joe,

I'm attaching some photos. Please bear with me, electrical work isn't something I've ever really done although I'm trying to learn and I am absolutely willing to do whatever is required to do that.

I made these measurements with the ignition turned on, but the car was not running.

I thought perhaps I had the multimeter on the wrong setting, so I changed it (see picture).

I probed the positive into alternate sides of the plugs as shown and got the corresponding readings as shown.

Please, if you would, let me know if I'm doing anything wrong. One of the four readings, as you can see, was noticeably lower than the other three. I double checked to make sure.

Thank you so much for your patience.

Sam

Ken,

Is the CAN scanner linked in the article you sent, which is listed on Amazon, going to do what we need?

Thanks,

Sam