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-   -   Two separate codes, two times into limp mode, one giant unsolved headache.. (http://forum.e46fanatics.com/showthread.php?t=779677)

TheDream 07-21-2010 12:38 PM

Two separate codes, two times into limp mode, one giant unsolved headache..
I'll keep this short and sweet, and I'm hoping someone can help me out. I have a step 330Ci.

Day 1 of the issues: Car goes into limp mode while stopped at a red light. Code readout was P1732 which has something to do with gear ratio. Turning off and on did not clear the limp mode. I had them clear the code and drove around fine for a few days.

Day 4: Car goes into limp mode AGAIN while stopped at a red light. This time I was only a mile from my mechanic so I drove straight there. Turned the car off and on, and limp mode was no longer there. A code was pulled though, P0721, which is the speed sensor.

Day 6: After a "few hours" at the shop turned into a day and 6 hours, my mechanic said that my tranny fluid and the driving test turned up nothing, and as it is sitting in the shop it's 100% fine. This is obviously not the case.

So I ask you, e46fanatics, don't let this be my last post here! Help a brother out, and hopefully I won't be selling this car.. although I do have my eye on an 02 M5.. :4ngie:

TheDream 07-21-2010 06:06 PM


shanneba 07-21-2010 08:32 PM

I found a few links when I searched yahoo with BMW P1721 and BMW P0721.

One indicated the fluid level could be low. It could also be a wiring problem to the transmission output speed sensor.
Another indicated the battery voltage could be too low.

TheDream 07-21-2010 11:51 PM

My mechanic double checked the fluid level and battery voltage, they both checked out fine. If it is the wiring to the speed sensor, is that an easy fix?

TheDream 07-22-2010 09:09 AM

morning bump..

TheDream 07-23-2010 06:06 AM

one last bump I guess

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