DTC P1023 BMW
Valvetronic (VVT) Self-Learning Function Faulty Adjustment Range (Bank 1)
Valvetronic (VVT) Self-Learning Function Faulty Adjustment Range (Bank 1)
Description
With the engine running, the fault is an out of range adjustment for the self-learning function of the VVT. Check the balance spring installation and the mechanical components for wear.
Cause and Solution
Stuck at upper travel limit
Travel limit worn or deformed
Wear in idler lever
Video Guide
Diagnostic Info
- DTC Code: P1023
- Brand: BMW