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How to Test a Harley Crank Position Sensor 1Turn the essential inside the ignition towards the "Off" position. Turn the "Run/Stop" switch to "Run." Push and hold the odometer "Reset" button.

Hold the "Reset" button and usually do not release it however.2Turn the important to "Ignition," but do not start the engine. Release the odometer "Reset" button. Wait for the odometer to indicate the bike is in diagnostic mode by displaying "Diag." car diagnostic tool; Push the odometer reset button and after that release it whenever you see the "P" within the menu selection flashing.

3Wait for the bike to complete the diagnostic on the electronic handle module along with the ignition manage module. Write down the codes which are displayed immediately after the diagnostic is total. Code PO 374 indicates a failed or faulty crank position sensor due to a synchronization error Professional diagnositic tools.