Crankshaft position sensor. Porsche 95B.2 Macan / 971 Panamera / 9YA Cayenne

Engine Crankshaft Position Sensor

The OE Match Engine Crankshaft Position Sensor is a critical component responsible for monitoring the position and rotational speed of the crankshaft. This data is sent directly to the engine control unit (ECU), allowing it to precisely manage fuel injection, ignition timing, and other essential engine functions. Without accurate crankshaft information, the ECU cannot properly control spark or fuel timing, leading to poor performance—or preventing the engine from running altogether.

Crankshaft position sensors typically use either magnetic or Hall-effect technology. Magnetic sensors generate a signal with a coil and magnet as the engine rotates, while Hall-effect sensors rely on a semiconductor that detects changes in magnetic fields. These sensors are commonly located near the crankshaft pulley/harmonic balancer or by the flywheel, depending on the engine design. They read notches or teeth on a reluctor (tone wheel) to create a signal the ECU can interpret.

Over time, heat, vibration, and contamination from oil, dirt, or metal debris can compromise the sensor’s internal circuitry, leading to inaccurate or lost signals. When the sensor begins to fail, drivability issues often follow—including stalling, rough idle, misfires, or a complete no-start condition.

Fits:
Porsche 95B.2 Macan S V6 3.0ltr - 2019 to 2021
Porsche 95B.2 Macan GTS V6 2.9ltr -  2019 to 2021
Porsche 95B.2 Macan turbo V6 2.9ltr - 2019 to 2021

Porsche 971.1 Panamera V6- 2017 to 2020
Porsche 971.1 Panamera V8 - 2017 to 2020
Porsche 971.2 Panamera V6 - 2021 to 2023
Porsche 971.2 Panamera V8 - 2021 to 2023

Porsche 9YA Cayenne V6 - 2018 to 2023
Porsche 9YA Cayenne V8 - 2018 to 2023

Symptoms of a Failing Crankshaft Position Sensor

• No-Start Condition

If the ECU does not receive a valid RPM signal from the sensor, the engine cannot start.

• Stalling When Warm

A failing sensor often causes the engine to stall when coming to a stop once it reaches operating temperature.

• Erratic or Dead Tachometer

Some older vehicles rely on the crankshaft sensor for tachometer readings. Strange tach behavior combined with running issues may point to CPS failure.

• Diagnostic Trouble Code P0335

A failing internal circuit may trigger code P0335, although not all faulty sensors will cause a check engine light.

• Poor Performance at Certain RPMs

Intermittent or out-of-range signals can cause timing drift, leading to performance issues—often more noticeable at high RPM or idle.

• Misfires Across Multiple Cylinders

Because the CPS affects overall ignition and fuel timing, failure can lead to misfires across all cylinders, unlike coil or injector failures that typically affect just one.

Diagram ref no 26

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