My check engine light shows cmp sensor b intermittent interruptionprobable cause 1 open or short circuit condition 2 poor electrical connection 3 faulty cmp sensor and my 33 fuse that controls the interior lights rear side light blew and sparks blows all fuses are they related what might be causing this issue. Otherwise it can cause issues if by any chance there is an interruption in the connection between the sensor and the control unit the camshaft position sensor is a crucial part of the engine management which ensures that the engine runs smoothly. The camshaft position sensor senses the piston position the sensor system consists of a rotating part typically a disc as well as a static part the actual sensor when the engine is running the high and low parts of the teeth cause the gap with the sensor to change the changing gap causes the magnetic field near the sensor to change. A failing camshaft position sensor cmp sensor can produce a confusing range of problems depending on the way it fails and the model of the car an intermittent or complete cmp sensor failure while on the road could be dangerous it could happen at any time you are driving on the highway moving . Symptoms of a bad or failing camshaft position sensor symptoms of a bad or failing camshaft position sensor common signs include the check engine light coming on the vehicle not starting and an overall reduction in vehicle drive quality by valerie johnston on january 05 2016
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