Engine Sensors
Engine Sensor Locations
Check Engine Light On Dash
Check Engine Light On, Sensor Descriptions

Automotive Engine Sensors

Choose the sensor below for descriptions

  1. Powertrain Control Module (PCM)
  2. Throttle Position (TP) sensor
  3. Mass Air Flow (MAF) sensor Intake Air Temperature (IAT) sensor
  4. Idle Air Control (IAC) valve
  5. Engine Coolant Temperature (ECT) sensor
  6. Heated Oxygen Sensor (HO2S)
  7. Camshaft Position (CMP) sensor
  8. Knock Sensor (KS)
  9. Vehicle Speed Sensor (VSS)
  10. Crankshaft Position (CKP) sensor
  11. Fuel Injector
  12. Coolant Temperature Sensor (CTS)
  13. Exhaust Gas Recirculaton (EGR)
  14. Manifold Absolute Pressure (MAP)

Source: FreeAutoMechanic.com/car-engine-sensors.html

Camshaft Position Sensor (CMP)

The CMP sensor provides the camshaft position information, called the CMP signal, which is used by the Powertrain Control Module (PCM) for fuel synchronization.

On 2 wire Sensor engines, the distributor stator or Camshaft Position (CMP) sensor is a single Hall effect magnetic switch. This is activated by a single vane, and is driven by the camshaft.

On Three Wire Sensor engines, the Camshaft Position (CMP) sensor is a variable reluctance sensor, which is triggered by the high-point mark on one of the camshaft sprockets.

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