2003 Dodge Ram 5.7L Crankshaft Position Sensor (CKP)

2003 Dodge Ram 5.7l Crankshaft Position Sensor (CKP)

The 2003 Dodge Ram 5.7 liter crank sensor or crankshaft position sensor (CKP) is an electronic device used to monitor the position and rotational speed of the crankshaft. The Dodge Ram’s engine management system uses the information obtained from the crankshaft position sensor to control igniting timing, fuel injection as well as other engine parameters.

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The 2003 Dodge Ram crankshaft position sensor is located and mounted into the right rear side of the 5.7 liter engine block. It is inserted and bolted into a machined hole.

2003 Dodge Ram 5.7L Crankshaft Position Sensor Location


The crankshaft position sensor is located at the right-rear side of the Dodge Ram’s engine cylinder block (see image below). For reference, the crankshaft position sensor is located on the outer edge of the flywheel for 5.9 liter engines and on the right-lower side of the cylinder block on the 8.0L engine.

2003 Dodge Ram 5.7 Liter CKP Sensor Removal And Installation

  1. Raise the Dodge Ram truck.
  2. Detach the crankshaft electrical connector from the sensor.
  3. Remove the crankshaft position sensor mounting bolt.
  4. Carefully twist the sensor outward from the engine cylinder block.
  5. Remove the crankshaft position sensor from the vehicle.
  6. Inspect the condition of the sensor and the sensor’s o-ring.


Ensure the crankshaft position sensor is perfectly flush to the engine’s cylinder block before tightening the sensor mounting bolt. If the crankshaft position sensor is not flush to the engine, damage to the sensor’s mounting tang can result.

  1. Clean out the machined hole in the engine block, clean away all debris and grime from the mouthing service.
  2. Apply a small amount of motor oil sensor’s o-ring.
  3. Reinstall the crankshaft position sensor into the engine block. You will need to use a slight twisting and rocking action to get it in the whole.

It’s highly recommended you refer to the 2003 Dodge Ram download factory repair manual when performing maintenance, service or repairs to the vehicle. Additional service procedures, including critical specifications, diagrams and illustrations are provided in the manual.


  1. How do I bench test the crank sensor and cam sensor on my 1999 Dodge Ram 2500 4X4? I was told that you can test the resistance to diagnose it.

    • You cannot bench test a crank position sensor or cam sensor but you can test them on the truck. You cannot check resistance on a cam or CKP sensor to know if it’s functional.

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