What does the crankshaft position sensor detect on BMW 335i?

The crankshaft position sensor detects crankshaft position and rotation speed. The sensor used on N55 motors can also detect direction of rotation. On N51, N52, and N54 motors this sensor is positioned in the engine block and reads a toothed wheel located on the crankshaft. On N55 motors this sensor is located in the bellhousing and uses a magnetic reluctor wheel mounted on the crankshaft flange. If the ECM does not receive a signal from the crankshaft position sensor during cranking, the engine does not start. If the OBD II system misfire detection protocol detects a catalyst damaging fault due to a malfunctioning in crankshaft position sensor, the malfunction indicator light (MIL) is illuminated. The crankshaft position sensor on N51, N52, and N54 motors is supplied 12 volts from the engine electronics fuses and ground from the ECM. It produces a 5 volt square wave signal to the ECM. N55 engines use a sensor that is supplied with a 5 volt reference signal. The sensor evaluation electronics produce a sine wave signal to the ECM from 4.1 to 5.1 volts. The crankshaft position sensor may also be referred to as engine speed I reference sensor.

Genuine BMW 335i Crankshaft Position Sensor

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BMW 335i Pulse Generator, Crankshaft / Gearbox
Part Number: 13627525015
$119.68 MSRP: $175.17
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Product Specifications
- Other Name: Pulse generator, crankshaft/gearbox; Crankshaft Position Sensor, Crankshaft Sensor
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2007-2010 BMW 335i | Convertible(E93), Coupe(E92), Sedan(E90)
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BMW 335i Crankshaft Position Sensor
Part Number: 13627582842
$91.29 MSRP: $131.38
You Save: $40.09 (31%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Crankshaft Sensor; Camshaft Position Sensor
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2011-2015 BMW 335i | Convertible(E93), Coupe(E92), Sedan(E90), Sedan(F30)

BMW 335i Crankshaft Position Sensor

Crankshaft Position Sensor in the BMW 335i is an electronic tool that checks the position and operation of the crankshaft. It sends this data to the power train control module responsible for adjust correctly the quantity of fuel to be injected in the engine and the best time to ignite the fuel for maximum efficiency. There is normally a preference in the crankshaft position sensor such as inductive, Hall effect, magnetoresistive and opto types. Inductive sensors are non-energized while Hall Effect and magnetoresistive sensors are suitable for static magnetic field. Optical sensors are very accurate in edge detection but they are likely to be fouled. The trigger is normally positioned on the crank baliser or the fly wheel or the crank shaft and failure of the component may result in starting difficulties or even the engine cutting out. In conclusion, the Crankshaft Position Sensor in the BMW 335i is a vital component of the cars' engine management systems.

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BMW 335i Crankshaft Position Sensor Parts Questions & Experts Answers

Pulse Generator, Crankshaft / Gearbox
13627525015
Q: What does the crankshaft position sensor detect on BMW 335i?
A:
The crankshaft position sensor detects crankshaft position and rotation speed. The sensor used on N55 motors can also detect direction of rotation. On N51, N52, and N54 motors this sensor is positioned in the engine block and reads a toothed wheel located on the crankshaft. On N55 motors this sensor is located in the bellhousing and uses a magnetic reluctor wheel mounted on the crankshaft flange. If the ECM does not receive a signal from the crankshaft position sensor during cranking, the engine does not start. If the OBD II system misfire detection protocol detects a catalyst damaging fault due to a malfunctioning in crankshaft position sensor, the malfunction indicator light (MIL) is illuminated. The crankshaft position sensor on N51, N52, and N54 motors is supplied 12 volts from the engine electronics fuses and ground from the ECM. It produces a 5 volt square wave signal to the ECM. N55 engines use a sensor that is supplied with a 5 volt reference signal. The sensor evaluation electronics produce a sine wave signal to the ECM from 4.1 to 5.1 volts. The crankshaft position sensor may also be referred to as engine speed I reference sensor.