Where is the crankshaft position sensor located on the Audi 2.4 engine?
3 Answers
Audi 2.4 engine's crankshaft position sensor is located on the left side of the engine block. Definition of the sensor: It detects engine speed, hence also called the speed sensor; it detects the top dead center position of pistons, thus also referred to as the top dead center sensor, including detecting the top dead center signals of each cylinder for ignition control and the first cylinder's top dead center signal for sequential fuel injection control. Working principle and function: The function of the crankshaft position sensor is to determine the position of the crankshaft, i.e., the crankshaft's rotation angle and engine speed. It usually works in conjunction with the camshaft position sensor to determine the basic ignition timing.
My old Audi A6 is equipped with a 2.4-liter engine, and the crankshaft position sensor is located near the crankshaft pulley at the front of the engine. Its position is somewhat hidden, below the right side of the cylinder block. I’ve repaired it myself before when the car wouldn’t start—it turned out the sensor wiring harness was covered in oil, causing poor contact. Removing the radiator and protective cover reveals it fixed in place. Its function is to monitor the crankshaft’s rotation speed and position, directly affecting the timing of the ignition and fuel injection systems. If it fails, the engine light will come on, or the car may shake and stall. I recommend opening the hood every six months to clean off dust buildup, especially in dusty urban areas. The location is relatively easy to find, but always disconnect the battery before working on it to prevent short circuits, as the Audi engine bay has dense wiring and can be prone to issues.
My car is equipped with an Audi 2.4L V6 engine. A few days ago, the engine threw a P0335 fault code, so I decided to DIY and locate the crankshaft position sensor. Turns out it's positioned on the side of the engine block, near the flywheel end. The location isn't too hard to find—it's inside a small black box near the oil filter, with its connector secured on a bracket. During the process, I used a 10mm socket wrench to remove the protective cover, gently unplugged the connector to test the resistance, which should normally be around 800 ohms. This sensor tracks the crankshaft angle to assist with fuel injection and ignition timing. If it fails, the car experiences sluggish acceleration and increased fuel consumption. After the repair, I tested the circuit voltage to ensure stability. From now on, during car washes, I'll spray some dust-repellent air to protect it, preventing dust buildup that could affect its accuracy.
