P0340 Camshaft Position Sensor Code and traction control on cooler days
#26
So I read some other threads related to my codes. There was mention of vacuum tubes under the supercharger intercooler. Then I remembered moving some vacuum lines while replacing the CPS. I found a very small vacuum tube (rigid line) broken from its joint under the Intercooler tube (passenger side). Now I need to pull the intercooler and replace the vacuum tube but I need the parts.
Anyone have a link to the lines from that area?
Anyone have a link to the lines from that area?
Last edited by eddie33brian; 11-21-2017 at 07:51 PM. Reason: Typo
#27
#28
I was able to reconnect the vacuum line, which was the fuel pressure regulator vacuum line. The car seems to run OK until I gave it the low r.p.m./ heavy throttle test and it failed miserably. So it seems the problem is still there. And I am getting the DSC light again immediately, with the same P0340 code. I looked underneath the intercooler downtube again and found another vacuum line or vacuum line connector sitting there not attached to anything. It’s another skinny rigid vacuum line with a cone shaped connector at the end of it which goes nowhere.
Sheesh.
what I really need is a schematic or diagram of where those vacuum lines should go.
Sheesh.
what I really need is a schematic or diagram of where those vacuum lines should go.
#29
I was able to reconnect the vacuum line, which was the fuel pressure regulator vacuum line. The car seems to run OK until I gave it the low r.p.m./ heavy throttle test and it failed miserably. So it seems the problem is still there. And I am getting the DSC light again immediately, with the same P0340 code. I looked underneath the intercooler downtube again and found another vacuum line or vacuum line connector sitting there not attached to anything. It’s another skinny rigid vacuum line with a cone shaped connector at the end of it which goes nowhere.
Sheesh.
what I really need is a schematic or diagram of where those vacuum lines should go.
Sheesh.
what I really need is a schematic or diagram of where those vacuum lines should go.
The cam position sensor will put the dsc light on! And it will not turn off, until the issue is corrected.
A pic of the vacuum line that is off, would help a bunch, for identifying it's location.
I am sorry, but forgot, or never knew the year of your car and if it is a justa or "S" model.
#30
2005 R53. Cooper S.
I have replaced the CPS twice in the past 2 weeks. I doubt they are both bad although I admit I didn’t buy them from BMW.
Still same result. In fact, the DSC light with the P0340 fault comes on more often since changing it. I clear the codes and it’s ok for a second. And it’ll run normally until it throws the code again.
The wiring looks good and I have checked it each time. I have no idea if there is a short down the line somewhere.
I will get a picture when I can.
I have located and reconnected the vacuum line issue that was under the intercooler. Still same result.
Now what.
I have replaced the CPS twice in the past 2 weeks. I doubt they are both bad although I admit I didn’t buy them from BMW.
Still same result. In fact, the DSC light with the P0340 fault comes on more often since changing it. I clear the codes and it’s ok for a second. And it’ll run normally until it throws the code again.
The wiring looks good and I have checked it each time. I have no idea if there is a short down the line somewhere.
I will get a picture when I can.
I have located and reconnected the vacuum line issue that was under the intercooler. Still same result.
Now what.
Last edited by eddie33brian; 11-29-2017 at 12:55 PM. Reason: Typo
#32
#33
The code readers I have access to, list the P0340 as the cam position sensor A circuit (bank 1 or single sensor). I have read here on the forums that the crank sensor can also cause that code, also blown fuses, shorted O2 sensors and bad timing. I'm trying to find something a little more concrete so I'm not just throwing parts at it. Is there a way to verify that it is the crank sensor?
#34
I have dealt with these codes many times. both the cam position sensor and the crank position sensor are related. I just always change both, because of this.
Do what you want, but both influence whether the dsc and other codes appear.
Why play with it? Sometimes when working on related parts that are known to fail are acting up, why not change them both?
It costs more in the long haul to pick at it over and over. Just my thoughts and I work on Minis all the time.
Tell me to go to heck, if you want, but I sell these cars as a small legal dealer and specialize in gen 1 MINI Coopers. no one can know it all, as we are not there, but we do have experience.
Hope you get it going!
Ps. I use dealer test equipment.
Do what you want, but both influence whether the dsc and other codes appear.
Why play with it? Sometimes when working on related parts that are known to fail are acting up, why not change them both?
It costs more in the long haul to pick at it over and over. Just my thoughts and I work on Minis all the time.
Tell me to go to heck, if you want, but I sell these cars as a small legal dealer and specialize in gen 1 MINI Coopers. no one can know it all, as we are not there, but we do have experience.
Hope you get it going!
Ps. I use dealer test equipment.
#35
#36
Help me!!!
I have dealt with these codes many times. both the cam position sensor and the crank position sensor are related. I just always change both, because of this.
Do what you want, but both influence whether the dsc and other codes appear.
Why play with it? Sometimes when working on related parts that are known to fail are acting up, why not change them both?
It costs more in the long haul to pick at it over and over. Just my thoughts and I work on Minis all the time.
Tell me to go to heck, if you want, but I sell these cars as a small legal dealer and specialize in gen 1 MINI Coopers. no one can know it all, as we are not there, but we do have experience.
Hope you get it going!
Ps. I use dealer test equipment.
Do what you want, but both influence whether the dsc and other codes appear.
Why play with it? Sometimes when working on related parts that are known to fail are acting up, why not change them both?
It costs more in the long haul to pick at it over and over. Just my thoughts and I work on Minis all the time.
Tell me to go to heck, if you want, but I sell these cars as a small legal dealer and specialize in gen 1 MINI Coopers. no one can know it all, as we are not there, but we do have experience.
Hope you get it going!
Ps. I use dealer test equipment.
#37
Hi. I’m new to the Cooper thing but really think these cars are awesome. That being said, I recently traded a great running 04 g35x for this non running 03 Cooper s with mods. The PO said all it needed was a cam sensor. I put a code reader in it and that’s what I got as well. I’ve change the cam sensor and pigtail along with the crank sensor for safe measures. I’m still unable to get the car to run. I don’t want to throw in the towel but I’m getting aggravated. I have crank but no spark. Spark plugs are wet with fuel, timing is good and also compression is good. I don’t know what else to look at. I’m trying to avoid sending it to a shop as I’ve never fine that before. I always fix my cars myself. Is there a really I could check or a fuse. Something obvious. Any help would be greatly appreciated.
The following users liked this post:
Pookie0412 (11-30-2019)
#40
Hi,
On cooler days (below 50 degrees F) my check engine light and traction control light will come on. On subsequent recranks the traction control light will go out, but the check engine light will stay on. If it warms up to the upper 50s the lights will go out.
I plugged in my obd reader and it says that I have a P0340 Camshaft Position Sensor Code. Other than doing the obvious and changing the sensor any idea what else could cause if to come on? Particularly with the traction control light?
On cooler days (below 50 degrees F) my check engine light and traction control light will come on. On subsequent recranks the traction control light will go out, but the check engine light will stay on. If it warms up to the upper 50s the lights will go out.
I plugged in my obd reader and it says that I have a P0340 Camshaft Position Sensor Code. Other than doing the obvious and changing the sensor any idea what else could cause if to come on? Particularly with the traction control light?
The following users liked this post:
ssoliman (10-17-2020)