If the code is stored in the PCM again, there is a fault that needs a more in-depth diagnosis and repair. They should then clear the code and retest the system. Any damaged elements should be replaced, reconnected, or repaired as necessary. How does a mechanic diagnose the P0366 code?Īfter an OBD-II scanner verifies the P0366 code, a mechanic should begin with a visual inspection of all the wiring, connectors, and other electrical components. In addition to the illumination of the Check Engine light, the P0366 code will usually be preceded by delayed engine starting, an inability to accelerate smoothly, rough idle, an overall decrease in engine performance, or a stalled engine. Open or shorted camshaft position sensor harness.The most likely cause of an abnormal voltage reading in the camshaft position sensor circuit is oil or engine fluid that has leaked onto electrical components and caused shortages, or has caused the camshaft position sensor to go bad. The signal is sent to the PCM, which stores the P0366 code. The ECM compares the data to the manufacturer’s specifications, and if the values are off by more than 10% (either high or low), the ECM assumes that there is a fault in the camshaft. These sensors send a signal to the ECM within the first few seconds of ignition. In order to control fuel injection and ignition, the ECM detects the rate at which camshafts spin through camshaft position sensors. The P0366 code is defined as an incorrect voltage reading from the camshaft position sensor circuit, specifically for the engine bank 1 camshaft sensor B.

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