BMW DTC P105C – VVL-Control Motor Tight
DTC P105C meaning on BMW
The DTC P105C on a BMW refers to a fault with the Variable Valve Lift (VVL) control motor being tight. This fault code indicates that there is an issue with the VVL control motor, which is responsible for adjusting the valve lift in the engine for optimal performance.
BMW DTC P105C symptoms
Symptoms of the DTC P105C on a BMW may include rough idling, decreased engine performance, reduced fuel efficiency, and potentially an illuminated check engine light on the dashboard.
BMW DTC P105C causes
The DTC P105C on a BMW can be caused by a variety of factors, including a faulty VVL control motor, wiring issues, or problems with the engine control module (ECM) that manages the VVL system.
BMW DTC P105C seriousness
While the DTC P105C may not cause immediate drivability issues, it is important to address this fault code promptly to prevent potential long-term damage to the engine and ensure optimal performance of the vehicle.
How to diagnose DTC P105C on BMW
To diagnose the DTC P105C on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and then perform further testing to pinpoint the exact cause of the issue. This may involve checking the VVL control motor, inspecting wiring connections, and testing the ECM.
How to fix DTC P105C on BMW
Fixing the DTC P105C on a BMW may involve replacing the VVL control motor if it is found to be faulty, repairing any damaged wiring, or reprogramming the ECM to address any software-related issues. It is recommended to follow the manufacturer’s repair procedures and use genuine parts for the best results.
How to erase DTC P105C on BMW
Once the underlying issue causing the DTC P105C on a BMW has been resolved, the fault code can be cleared using a diagnostic scanner. This will reset the check engine light and allow the vehicle’s ECM to monitor the system for any new faults.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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