BrokeManWorkin

I keep getting a Code 69 and it seems to be getting more frequent. I keep resetting it but it seems to be coming back more lately. The fix I've managed to find says to replace the temperature sensor. According to RealOEM.com there are a few items that are listed as 'temperature sensors'. I just want to order the right one. Can anyone verify if part #11 in the following schematic is the right part to replace?

http://realoem.com/bmw/showparts.do?...11&fg=35&hl=13

chrisj

That code seems to come up all the time. Is that the only one you are getting? The 69 was thrown on my car when the CPS was failing and throwing a code as well, but never came up after the CPS was replaced.

If you search, you'll find that 69 is almost always thrown as part of another problem, and resolved when that problem is. I don't remember seeing it come up by itself, so if that is happening your case might be different.

The description is funny for it also - "plausibility". From what I have seen, this seems to be the computer trying to give all of the possible problems. For instance, a misfire is detected, which could have been caused by lots of things. One of those things _could be_ a bad temp reading getting back to the computer, causing it to create a misfire.

That's what I would get - misfire, CPS code, code 69. The problem really was the CPS, even though it threw the 69 as well. Unlike the CPS code, which is telling you the CPS _is_ bad, this one, I think, is based on a guess by the computer.

Guessing you are getting this in combination with another code?

BrokeManWorkin

No. it's the only code that shows up. I'm still hoping it something simple. It'd be the first time a fix cost less than a few hundred dollors.

ard

Is it b9 or 69... B and 6 can be confusing with the peake.

B9 is an exhaust CPS...

BrokeManWorkin

it's a 69. I double checked the manual just to be sure.

chrisj

And you are consistantly getting the SES light set with only that code? I went back through some old posts and couldn't find any where that was an isolated issue. Does it come after you get on it, or just in normal driving?

How many miles on your CPS sensors? It's possible another sensor is starting to go but not throwing codes yet.

Not saying it isn't a temp sensor - just that code 69 hasn't appeared to be an indicator of a real problem in posts I have seen, or in my experience. It always seems to get cleared up by solving some other problem. I can appreciate your desire to save $$$ - just trying to help!

BrokeManWorkin

I rarely ever get on it. I think I drive it moderately. When it first started happening I thought it was due to having the sport mode on. That's when it would come on. Lately it's been doing it just whenever.

Are CPS on the back of the cylinder heads? I looked on RealOEM and what they call Pluse Generators are what I would assume what is meant by CPS, just different terminology. Here's the link....

http://realoem.com/bmw/showparts.do?...11&fg=15&hl=16

Assuming that is the root of the problem, how do you know if it's the intake or exhaust CPS's that are going out. I have 54K miles on the car and I'm sure they are original. Has anyone ever changed them out by themselves or is this something I should leave up to the dealership?

ard

That's what they are called...

One comment- if you look at the display on the peake and write down a "6" instead of a "b" you'll never know you made an error! The lower case b is distinguished from a 6 by the flat upper topmost segment...

FInally, there are 4 distinct codes, one for eack CPS. b9 is the code for the bank 1-4 exhaust cps. Look in the peake book, there are 3 other codes for the other units.

There are a few DIY posts- search- seems pretty straightforward.

A

BrokeManWorkin

I'm 100% sure it's a 6. After I started the thread I went out to clear the code after checking the Peake documentation just to make sure. It did have the horizonal top to distinguish it as a 6 and not a b.

It's not something that important right now anyway. I'm just trying to get my ducks in a row for when I have to do it. I just got the rear diff out so I can send it off to get rebuilt. For whatever reason it started making a whine coming home during Christmas. Who knows why.....Mechanic says it's got fluid.

BrokeManWorkin

I recieved a 69 error code today again but this time I also got a 42 EWS Interface. So far a search only came up with 2 results that didn't help. Anyone know what the EWS Interface means.

I was driving normal and I recently replaced the coolent temp sensor thinking that would get rid of the 69 error.