What does the Volkswagen Passat 17705 fault code indicate?

[DeKendra]

The fault code 17705 in the Volkswagen Passat indicates an issue caused by a damaged throttle valve. Throttle valve faults can be categorized into two types: hard faults and soft faults. Hard faults refer to mechanical damage. The resistor part of the potentiometer is made by spraying a carbon film onto a polyester substrate, which is a relatively basic manufacturing process with low wear resistance. Soft faults refer to issues like dirt accumulation or misalignment. Key points to note about throttle valves: Excessive sludge buildup in the throttle valve may lead to poor engine acceleration and increased fuel consumption, which is a major concern for car owners. When cleaning the throttle valve, it is not necessary to disassemble it, but the sealing parts of the intake must be thoroughly cleaned. The idle speed motor must be removed for a proper cleaning. There are pros and cons to both disassembling and non-disassembling methods for cleaning the fuel injectors.