What is the function of the Camshaft Position (CMP) sensor in the operation of the Engine Control Module (ECM)?

The Camshaft Position (CMP) sensor is vital for the Engine Control Module (ECM) to operate fuel injection, ignition timing, and knock control. Mounted on the cylinder head, it uses a camshaft marker to generate an electrical pulse, helping the ECM identify when cylinder No. 1 is at Top Dead Center (TDC). This information is used to create an ignition spark and activate the fuel injector. If the CMP sensor fails, ignition and fuel injection cease. Testing involves checking resistance between terminals with a digital ohmmeter. Removal and installation vary by engine type, but typically involve disconnecting the sensor lead, removing necessary components, and installing the new sensor with correct torque.

Genuine BMW Z3 Camshaft Position Sensor

Cam Position Sensor

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5 Camshaft Position Sensors found

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BMW Z3 Camshaft Position Sensor Compatible
Part Number: 12147518628
$104.14 MSRP: $149.88
You Save: $45.74 (31%)

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Product Specifications
- Other Name: Camshaft Sensor; Camshaft Position Sensor
- Replaces: 12-14-7-506-273
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
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Fits the following Vehicles:
- 1997-2002 BMW Z3 | 2.8L Engine(E36), Coupe(E36), Roadster 2.5L(E36), Roadster 2.8L(E36), Roadster 3.0L(E36)
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BMW Z3 Camshaft Position Sensor
Part Number: 12141703221
$146.86 MSRP: $166.23
You Save: $19.37 (12%)

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Product Specifications
- Other Name: Camshaft Sensor
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
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Fits the following Vehicles:
- 1997-2000 BMW Z3 | 2.8L Engine(E36), Roadster 2.8L(E36)
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BMW Z3 Camshaft Position Sensor
Part Number: 12147539165
$109.34 MSRP: $157.36
You Save: $48.02 (31%)

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Product Specifications
- Other Name: Camshaft Sensor
- Replaces: 12-14-1-435-350, 12-14-1-438-081
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
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Fits the following Vehicles:
- 1997-2002 BMW Z3 | 2.8L Engine(E36), Coupe(E36), Roadster 2.5L(E36), Roadster 2.8L(E36), Roadster 3.0L(E36)
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BMW Z3 Camshaft Position Sensor
Part Number: 12141743072
$236.73 MSRP: $277.64
You Save: $40.91 (15%)

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Product Specifications
- Other Name: Trigger Contact; Position Sensor
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
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Fits the following Vehicles:
- 1996-1998 BMW Z3 | 1.9L Engine(E36), Roadster 1.9L(E36), Roadster(E36)
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BMW Z3 Camshaft Position Sensor
Part Number: 12141438081
$109.34 MSRP: $157.36
You Save: $48.02 (31%)

Add to Cart
Product Specifications
- Other Name: Camshaft Sensor
- Replaced by: 12147539165
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
View More
Fits the following Vehicles:
- 2001-2002 BMW Z3 | Coupe(E36), Roadster 2.5L(E36), Roadster 3.0L(E36)

BMW Z3 Camshaft Position Sensor Parts Questions & Answers

Camshaft Position Sensor
12-14-1-703-221
Q: What is the function of the Camshaft Position (CMP) sensor in the operation of the Engine Control Module (ECM)?
A: The Camshaft Position (CMP) sensor is vital for the Engine Control Module (ECM) to operate fuel injection, ignition timing, and knock control. Mounted on the cylinder head, it uses a camshaft marker to generate an electrical pulse, helping the ECM identify when cylinder No. 1 is at Top Dead Center (TDC). This information is used to create an ignition spark and activate the fuel injector. If the CMP sensor fails, ignition and fuel injection cease. Testing involves checking resistance between terminals with a digital ohmmeter. Removal and installation vary by engine type, but typically involve disconnecting the sensor lead, removing necessary components, and installing the new sensor with correct torque.