Were you ever able to get rid of the 101f01 code?

 

Unfortunately no. I replaced the boost solenoid, charge pipe and ran the troubleshoot but the code comes back. I learned that the error can occur as a difference in pressure limit between a few sections of the throttle system. So any boost/pressure leak from a valve cover or a pipe can cause the code. Mine is such a small difference that I left it alone, no issue with oil pressure, gas mileage, response or acceleration, it idles smoothly so I’ll leave it alone until I have enough money to throw on a proper diagnosis.

 

Hey everyone 2012 F30 335i sport - 129800km - Canadian BMW - I have an issue that I am 100% sure its related to coding and adaptation for DME. Short/quick story, My eccentric shaft was shot, roller bearings were stiff causing the Valvetronic motor to wear the shaft gear.. Replaced the motor and shaft, ran ISTA and performed the learning procedure,, all 450 cycles went fine along with the extra 50 for errors. Valvetronic learned successfully. Second step I deleted DME adaptations and let the car idling for 2 minutes. I have ran the car with a deactivate valvetronic for 1 year. Never ever had any codes or issues other than a gas mileage problem, (running at max position has its toll) Exactly after running new learning for valvetronic car threw a 101f01 throttle valve angle. basically the throttle is not intelligent enough to adjust the angle according to the valvetronic angle and properly calculating the oxygen/gas mixture. I did the service bulletin from BMW for this issue: disconnected the purge valve, started the engine, idling for 15 minutes, turned off the engine, connected the purge valve, cleaned all errors. This procedure does assist with the rough idling a LOT, BUT it does not fix the issue and the throttle is still not open enough at idling, causing a bad mixture and thus misfires. I do not have a vacuum leak as the issue started only when the valvetronic was performed. there is no loss of perfomance and idling is a tiny bit rough,, I have the BimmerLink and have seen random misfires on cy 1,3,4,6 (always when the can goes to idling after driving over 30mph. So, I know there is a lot of 101f01 but I was not able to pinpoint one related directly to a valvetronic start up procedure. does anyone has any recommendation on how to teach the throttle (DME) on how to work with the new valvetronic values? or should I just continue driving until the DME collects enough data to adapt to the new variables? Should I allow the can to run idle with the purge valve disconnected for more than 15 minutes? I appreciate all the help

I have been having this issue for 6 months now. Code only comes up on start-up together with a 104B01 code. Once i clear it and drive off it never shows up till i turn the car off and back on again. I put a tooth pick in the pcv valve hole for a day and then took it out. The code never came back again it yesterday morning. I have replaced just the pcv and the issue persists. I also noticed a small leakage around the bottom of the bellhousing connecting to the engine. Im suspecting rear main seal. Can a leaking rear main seal be the culprit? Also how do you troubleshoot and relearn the Vanos and eccentric shaft to see if they are working properly. I have smoke tested, changed boost control solenoids, maf, map, charge pipe, spark plugs with the problem still persisting.

 

Please watch this video, it might help