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BMW Valvetronic Code
This is for the F25 chassis Engine N20. Mine is a BMW X3 28iX drive, 2013, it has 80,000 km.
One day during a normal drive in the morning I got the annoying message in the dashboard “DriveTrain Malfunction…” Limp mode activated, I stopped and turned the engine Off, waited five minutes, turned engine On and the error disappeared, the car was running fine the rest of the day and next days until I got the time to run a diagnosis using ISTA.
ISTA is the software used by BMW dealers or specialised workshops to diagnose any malfunction, so far I have used ISTA in my F30 and F25.
Memory fault was read and I got this two codes:
133B04 - Valvetronic system ; no adjustment possible
133E10 - Valvetronic system: deactivated , adjustment fault too frequent
The first one appeared as not present but the second one was still present. Decided to follow the procedure to try to repair the problem. It took me about two hours running all the test using ISTA, you will need a battery charger to keep the battery voltage above 13v during all the procedure.
The problem was fixed, the Valvetronic system was recalibrated by the software, no tools, no spares, no work under the hood, SIMPLY scanning and diagnosis the car using BMW software. Start saving time and big money, get yourself a laptop, ISTA and the USB or ENET cable to connect your car.
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