Crankshaft position sensor. Porsche 955 Cayenne / 957 Cayenne  ❭  95560614700

The Crankshaft Position Sensor (CKP) product ref: 95560614700, 95560643300, 0261210178 is a critical engine management component that monitors the exact rotational position and speed (RPM) of the crankshaft. This information is essential for the engine control unit (ECU) to correctly time spark ignition and fuel injection events. On Porsche Cayenne 955 and 957 models, a reliable crankshaft position sensor ensures precise engine timing, optimal performance, smooth running, and efficient fuel combustion.

Fits:
Porsche 955 Cayenne 3.2L 2004-05
Porsche 957 Cayenne 3.6L 2008-10

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Diagram ref no 18

Why This Should Be Replaced

The crankshaft position sensor can fail over time due to heat cycling, vibration, contamination, or electrical wear. When the sensor starts to degrade or fails outright, the ECU loses the ability to accurately determine engine speed and position, which directly impacts performance and drivability.

Replacement is recommended when the sensor is faulty or showing signs of wear, as continued operation with a compromised CKP sensor can lead to more serious engine issues, driveability problems, and component strain.

Common Symptoms of a Failing Crankshaft Position Sensor

A failing or failed crankshaft position sensor typically causes one or more of the following symptoms:

• Engine misfires or runs unevenly 
• Hard starting or no start condition 
• Stalling, particularly at idle or low speed 
• Check Engine Light (CEL) with CKP-related fault codes stored 
• Loss of power / hesitation under acceleration 
• Irregular tachometer behaviour or incorrect RPM reading

If left unresolved, these issues can lead to increased fuel consumption, catalytic converter damage, and an overall unsafe driving experience.

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