[W37V]

I keep getting 2D5A error code. Even after I delete it, it comes back. There are no other codes. After reset, the car does appear to pull just a hint stronger.

car is 2011 w/ manual transmission.

Engine / Motor:
- Fault: Actuator torque limit
- Code: 002D5A

I haven't found much information about this error for N52s. Most of the topics are regarding 335s and I don't think they quite translate to N52. apparently, the code is also known as control motor torque limitation and 2D5A - VANOS, intake: control fault, camshaft sticking.

Car has AA tune, 3IM and headers.

[hassmaschine]

I don't think this has anything to with Vanos. it's something along the lines of the actual torque being above expected torque. I came across a parameter that might fix it but I haven't tried it yet (also, I have never been able to reproduce this problem myself).

The actual error code is "Überwachung Motordrehmoment-Begrenzung", something like "Monitoring of Motor Torque Limitation". (I like seeing the actual German error codes when it comes to BMWs because people mistranslate or miss the context).

it's come up on a few N52s and N53s that I know of. I don't know if anyone has actually found a fix. There's a Boolean to turn off torque monitoring but it's not certain that it will fix this and/or not cause any other errors.

[W37V]

So you are telling me that my N52 is making too much torque?

I never expected that.

However, after clearing the code, car does pull stronger. There is no CEL. Car does pull ok, but doesn't feel as strong.

what do you think what other errors might pop up?

[hassmaschine]

no.. it's something in the torque control/DSC system. I don't know exactly what, but it pops up sometimes when people have a full tune. I've taken my exact tune (that doesn't have any issues) and put it on another basically identical car and they get the torque monitor errors.

[W37V]

Should I email AA and ask them about this? Would they be able to help?

[hassmaschine]

you could but as far as I know they haven't been able to solve it either.

[fravel]

My car started presenting with this code after I changed out a failed DISA flap. I do also have Eurobox and PE with secondary cat delete, but no tune. No idea what to do about it either.

[W37V]

Originally Posted by fravel

My car started presenting with this code after I changed out a failed DISA flap. I do also have Eurobox and PE with secondary cat delete, but no tune. No idea what to do about it either.

After you reset the error, do you feel any difference in power?

[W37V]

Originally Posted by hassmaschine

no.. it's something in the torque control/DSC system. I don't know exactly what, but it pops up sometimes when people have a full tune. I've taken my exact tune (that doesn't have any issues) and put it on another basically identical car and they get the torque monitor errors.

BTW. This is where I got the code interpretation: 2D5A - VANOS, intake: control fault, camshaft sticking

https://encrypted.google.com/url?sa=...0Caw-7QzBC7Osg

[hassmaschine]

I pulled the code description from Tool32. It doesn't say anything about Vanos. 2D55 is the throttle pedal monitor.

The only codes related to Vanos are:
2A80 Einlass-VANOS, Ansteuerung
2A82 Einlass-VANOS, Mechanik
2A85 Auslass-VANOS, Ansteuerung
2A87 Auslass-VANOS, Mechanik

[mmmnot]

In for updates. I noticed a similar shadow code after my AA tune/manifold. Hasn't caused any issues minus being a shadow code (at this point).

GL.

[W37V]

Originally Posted by BMW..

Welcome to the club. Can't get my car tuned properly because of this because of limp mode lol

Damn!

So sorry to hear that.

[hassmaschine]

Originally Posted by BMW..

Welcome to the club. Can't get my car tuned properly because of this because of limp mode lol

I might have the parameter that turns off torque monitoring. If you want to test it...

[fravel]

Originally Posted by W37V

BTW. This is where I got the code interpretation: 2D5A - VANOS, intake: control fault, camshaft sticking

https://encrypted.google.com/url?sa=...0Caw-7QzBC7Osg

I'm really not sure. My car is presenting with a couple other weird codes though too, specifically 2A2E and 2A2F.

[hassmaschine]

Originally Posted by fravel

I'm really not sure. My car is presenting with a couple other weird codes though too, specifically 2A2E and 2A2F.

look at the text file I posted.

2A2E - Mixture Regulation (bank 1, I assume)
2A2F - Mixture Regulation (bank 2)

Could also be translated as "fuel trim". The full text of the detailed error code should give a little more context. the freeze frame data should show what the trims are.

[fravel]

Originally Posted by hassmaschine

look at the text file I posted.

2A2E - Mixture Regulation (bank 1, I assume)
2A2F - Mixture Regulation (bank 2)

Could also be translated as "fuel trim". The full text of the detailed error code should give a little more context. the freeze frame data should show what the trims are.

Yeah, I've figured out that much but determining what about the fuel trims is actually bad has been the problem. Shop tested fuel system and found no problems, the intake side of the car is pretty much all brand new at this point (filter, MAF sensor and DISA flaps), along with the PCV system and VANOS solenoids. Signals from O2 sensors are comparable to an N52 car with fewer miles and no CEL. Car drives fine other than some perceived lag in the throttle at low RPM and this damn CEL - it's really kind of frustrating. I have noticed a minor drop in efficiency (~10%) over the past 6 months or so, but that could easily be explained by the fact that I switched jobs in July and went from a 30 mile highway round-trip to a 20 mile city round-trip.

Do you know if I could acquire the freeze frame data with the BavTech software? If so, any idea how?

[hassmaschine]

yeah I don't know. The best tool by far IMO for reading error codes on a BMW is BMW's own software. You can see a heck of a lot more that most of the aftermarket tools either hide or just don't read out.

[fravel]

Originally Posted by hassmaschine

yeah I don't know. The best tool by far IMO for reading error codes on a BMW is BMW's own software. You can see a heck of a lot more that most of the aftermarket tools either hide or just don't read out.

Yeah, I've tried setting all that up but it's outside of my skillset.