Where is the fuel injector fuse for Audi A4?

1 Answers
Braylen
07/29/25 7:16pm
The fuel injector fuse for Audi A4 is located above the clutch pedal on the driver's side. The power supply to the fuel injector is only active during engine start-up, so please take note when measuring. Definition of fuel injector: A fuel injector is essentially a normally closed valve (a normally closed valve remains closed when there is no control signal input, whereas a normally open valve remains open without a control signal). The opening and closing of the valve is controlled by the up and down movement of a valve needle. Principle of fuel injector: When the ECU issues a fuel injection command, its voltage signal causes current to flow through the coil inside the fuel injector, generating a magnetic field that lifts the valve needle, thereby opening the valve and allowing fuel to be sprayed out through the injection nozzle. The greatest advantage of fuel injection is the highly precise control of fuel supply, ensuring the correct air-fuel ratio under any engine condition. This not only keeps the engine running smoothly but also ensures that the exhaust emissions comply with environmental regulations.
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