Is a faulty crankshaft position sensor in the Nissan Livina a power failure?

[VanReese]

Is a faulty crankshaft position sensor in the Nissan Livina a power failure, but it could also be a short circuit. Function of the crankshaft sensor: The role of the crankshaft position sensor is to determine the position of the crankshaft, that is, the angle of the crankshaft. It usually works in conjunction with the camshaft position sensor to determine the basic ignition timing. The engine's ignition timing and which cylinder to ignite rely on the signal from the crankshaft position sensor, as it can detect when the piston reaches the top dead center position. Symptoms of a faulty crankshaft sensor: If the crankshaft position sensor is damaged, the crankshaft's angle cannot be determined, and the engine control unit (ECU) does not receive the signal from the crankshaft position sensor. To protect the engine, it will not ignite or inject fuel, resulting in symptoms such as no high-voltage electricity, no fuel injection, and the car not starting. Of course, the most obvious sign is the illumination of the engine fault light on the dashboard.

[AsherAnn]

I've been driving a Livina for six years and just experienced this issue last month. At that time, the engine malfunction light was on and the car wouldn't start. The diagnosis showed that the crankshaft position sensor was faulty. The mechanic told me that replacing it requires power disconnection - the negative terminal of the battery must be disconnected first, because the sensor is directly connected to the vehicle's computer. If not disconnected, a short circuit might burn out the entire ECU module. When installing the new sensor, he specifically checked for any aged or damaged wiring, and finally cleared the fault code to restore normal operation. Now my car starts perfectly even in cold conditions. I suggest you also have it handled by professionals rather than trying to fix it yourself.

[DiKevin]

As someone who frequently works on my own car, I've encountered sensor issues. It's basic knowledge that a faulty crankshaft position sensor on a Nissan Livina requires power disconnection for replacement. Last time before replacing it, I deliberately disconnected the battery and waited ten minutes, since the sensor is connected to the engine control unit - working with power on can easily cause short circuits or signal interference. It's best to confirm the trouble code with a professional diagnostic tool before proceeding. After replacement, remember to reprogram the keys. The whole process can actually be completed in twenty minutes, but the power disconnection step must never be skipped.

[SanWalter]

Last week, my neighbor's Livia suddenly stalled and was towed to my shop for inspection. The diagnostic tool showed a P0335 trouble code, indicating a crankshaft sensor issue. Replacing it required disconnecting the battery because the sensor has a 5V reference voltage line directly connected to the ECU, and operating without cutting power could fry the computer board. During the removal and installation, we found the old sensor was soaked in oil and failed. We had to clean the mounting seat thoroughly before installing the new one. Now, his car no longer idles roughly. Disconnecting the battery during the repair of this hundred-dollar part was absolutely a critical step.