What happens if the crankshaft position sensor fails?

[OChloe]

The failure of the crankshaft position sensor will result in the inability to determine the rotation angle of the crankshaft. The engine control unit (ECU) cannot receive the signal from the crankshaft position sensor, leading to symptoms such as no high-voltage electricity and the car failing to start. Below is a partial introduction to the crankshaft position sensor: 1. The magnetoelectric induction speed sensor and crankshaft position sensor are installed in two layers inside the distributor. The sensor consists of a permanent magnet induction detection coil and a rotor (timing rotor and speed rotor), with the rotor rotating along with the distributor shaft. 2. The Hall effect speed sensor and crankshaft position sensor are signal generators that utilize the Hall effect. The photoelectric crankshaft position sensor is generally installed inside the distributor and consists of a signal generator and a signal disc with light holes.

[VanCorbin]

That time my car suddenly stalled on the highway, it scared me to death. After being towed to the shop for inspection, they said the crankshaft position sensor was faulty. When this thing fails, it's a real headache. It interferes with the engine's ignition system, preventing accurate timing for spark and fuel injection, resulting in the car either not starting or stalling immediately after starting. If it malfunctions while driving, the engine shakes violently and may even die in the middle of the road, increasing the risk of accidents. Pay attention to dashboard warning lights or difficulty starting the car—these are early signs. I've learned my lesson and now get it checked regularly during maintenance. It's usually located near the front of the engine, next to the crankcase, and is prone to failure due to thermal expansion and contraction. Fix it promptly to avoid bigger issues—don't be like me, nearly causing a major incident. A mechanic can replace it in about half an hour, and it doesn't cost much.

[MacVincent]

I've been in the auto plant for over 20 years and have encountered crankshaft sensor failures countless times. This component is crucial for sending crankshaft position signals to the ECU. When it fails, the ECU loses proper command, causing ignition timing chaos - resulting in hard starts, noticeable idle vibration, or unexpected stalling while driving. Prolonged neglect may lead to piston knocking or uneven combustion, accelerating engine damage. Diagnosis is straightforward with basic OBD code readers - P0335 being a common trouble code. It's typically located near the engine crankshaft. Replacement is simple but requires care to avoid damaging surrounding components. I recommend checking this sensor at the first sign of starting issues to prevent costlier repairs later.

[McAdelyn]

As I grow older, I become more concerned about driving safety. If the crankshaft position sensor fails, the engine may have difficulty starting due to inaccurate ignition or suddenly stall while driving, which is extremely dangerous at intersections or on highways. The dashboard usually lights up a warning indicator, but some people ignore it. I remember my friend's car broke down overnight because of this issue. Although the repair was quick, the psychological burden was significant. Addressing the problem promptly can prevent unexpected stalls and increased fuel consumption—safety always comes first.