Help with error codes.

[bermanc]

Not sure if this is the appropriate forum, but looking for some advice on a few error codes generated by INPA.

After clearing the errors and taking the car for a spin to induce the problem, INPA produces these error codes:

2B5C
51A7
5E1A

The car goes into limp mode, idles high, and if turned off will only start on the second attempt.

Any idea what's going on?

Thanks.

[bermanc]

Is anyone able to help?

I've found the following from searching google:

2B5C - crankshaft sensor
51A7 - gearbox control unit
5E1A - dynamic stability control

Could anyone shed any light on what I should attempt first?

Replacing crankshaft sensor?

Thanks.

[Pelican Parts]

Hello and welcome to the forums! Take a look at the link below to our site's DIY tech articles on the E90 platform for the repair procedure for the crankshaft sensor and other procedures if needed for a later date. How is the car performing? Any issues with the gearbox or DSC?

http://www.pelicanparts.com/BMW/tech...eplacement.htm

[bermanc]

Hi and thanks for the response.

As far as I can tell the car is running fine. This is the only issue. Battery has just been replaced, coded, and registered. The only other persistent error code I am getting is the E18D error code. I don't think that has any relation to this problem?

Should I go ahead and replace the crankshaft sensor? Can that be the cause of the other two, 51A7 and 5E1A, errors?

Thank you for your time and help!

- - - Updated - - -

Just though I'd mention that the problem has got progressively worse. Initially I could drive 30kms before the car went into limp mode. Now it's about 1km. I don't know if that's helpful or not.

Thanks again.