Applicable Systems
3 Series
5 Series
X3
X5
7 Series
Symptoms
Valvetronic servo motor position fault; engine may run with reduced power or limp mode.
Possible Causes
- Valvetronic servo motor winding failure
- Valvetronic eccentric shaft sensor fault
- Engine control module DME internal fault
Troubleshooting Steps
- Step 1: Read Valvetronic motor adaptation values
Values out of specification - Step 2: Test servo motor resistance and insulation
Motor within specification or needs replacement - Step 3: Replace Valvetronic servo motor and re-adapt
Motor replaced, adaptation successful
How to Reset
Clear adaptation values and perform Valvetronic re-adaptation.
Source: SAE J2012 Standard, OBD-II Service Manuals
Category: OBD-II