What is eccentric shaft sensor on BMW?
The eccentric shaft position sensor is used as a feedback for the Valvetronic eccentric camshaft. The eccentric shaft is actuated by the Valvetronic motor and in return controls variable intake valve lift. The eccentric shaft sensor is mounted to the cylinder head beneath the valve cover.
What does BMW Valvetronic do?
The Valvetronic system is a BMW variable valve lift system which, in combination with variable valve timing, allows infinite adjustment of the intake valve timing and duration. The system claims to improve fuel economy and emissions, and negates the need for a throttle body in regular use.
What are the symptoms of a bad valvetronic?
What can go wrong with Valvetronic systems?
- Illuminated MIL lamp that may or may not be flashing.
- Varying degrees of power loss.
- Rough idling/running at some engine speeds.
- Excessive fuel consumption.
- A hard-start or a no-start condition may be present.
What causes valvetronic motor failure?
Common causes and symptoms: Wear and tear, as well as added mileage, can cause the valvetronic eccentric shaft to experience wear, causing the shaft to bind. In this case, the increased resistance in the shaft is what triggers the fault code.
How do you reset valvetronic adaptation?
Perform the Reset Valvetronic Lift Adaptation Test Plan Select “Vehicle management” Select “Service functions” Select “Powertrain” Select “Engine electronics” Select “Reset Adaptations” Run ABL Select “Reset Valvetronic lift adaptation” and follow the prompts on the screen to clear the Valvetronic adaptions.
Can you drive without Valvetronic?
The car may not even idle at really low lift values. You shouldve just unplugged valvetronic instead of trying to actuate it via software… when the dme sees valvetronic not working right it disables it with the valves at maximum lift. the car continues to drive fine with disabled valvetronic.
What is a valvetronic fault?
This fault code indicates that your BMW’s valvetronic system eccentric shaft is no longer working properly as a result of wear and tear in certain parts of the shaft.