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What is the VANOS fault in BMW camshaft?

1 Answers

DelAlejandro

07/29/25 8:08pm

VANOS failure may be caused by issues with the VANOS solenoid valve. Here are the relevant details: Check engine light: Symptoms include the engine fault light illuminating, weak vehicle acceleration, slight idle shaking, and the central information display showing "Unable to obtain full transmission power." First, remove and clean it; if the issue persists, replacement at a 4S shop is necessary. Control device: BMW's VANOS system is a camshaft control device that combines hydraulic and mechanical components, operated by the vehicle's engine management system. The VANOS system adjusts the intake camshaft based on engine speed and accelerator pedal position. At minimum engine speed, the intake valves open later to enhance idle quality and smoothness.

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