P2617 - OBD Trouble Code

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Is your car engine not starting again? Do you notice increased fuel consumption over recent period of time? And is your car engine performance degrading? If all this is true, then there might be a problem with Crankshaft Position Signal Output Circuit Open indicating the OBD Code P2617 error.The ECM (Engine Control Module) illuminates the CEL (Check Engine Light) with P2617 and related codes when it detects a malfunction within the crankshaft sensor/circuit.

The crankshaft position sensor, in case you don’t know is an electronic device that is vital to the functioning of a car. It is located in the engine of the car. It registers the rate of spinning of the crankshaft. This sensor then passes the information to the ECU and decided optimal fuel injection and regulation of ignition. It is the location of the crankshaft that determines the effectiveness of the gathered data. This is why the sensor is located either next to camshaft or the crankshaft itself.3

What causes this problem with the Crankshaft Position Signal Output Circuit/Open?3

• Defective oil solenoid hampering the sensor readings
• Use of wrong or contaminated engine oil
• Inoperative crankshaft position sensor
• Valves may be stuck or damaged
• Broken/Damaged wiring/harness causing disruption in the signal flow
• Mechanical/ Electrical shortage leading to wrong reading in the sensor
• ECM (Engine Control Module) picking wrong input from the sensors due to being damaged

1. Electronic Control Unit – ECU monitors the temperature differences in the boost converter with the help of the temperature sensors to prevent the converter from overheating and malfunctioning. Thus, replace faulty ECU immediately.
2. Engine Control Module - ECM failures and faults can be very difficult to find and resolve as these are very rare and might require a complete reprogramming of the system to avoid wrong codes from getting stored in the system, leading to misdiagnosis. Replace it now!
3. Powertrain Control Module - Faulty PCM can disrupt the normal functioning of the vehicle by affecting the transmission system and the fuel delivery system. This will cause the system to store wrong OBD error and thus can lead to misdiagnosis.
4. Diagnostic Tool - In order to be that DIY guy, you need few diagnostic tools to get your car problems pointed out easily. Our diagnostic tools collection will come in handy to do so, so why not have a look?
5. Fuel Injector – The fuel injector is responsible for maintaining optimal levels of the air to fuel ratios in the combustion chambers for the maximum out from the engines. It the fuel injector goes down, it hampers the entire efficiency of the engine. Thus, check and replace the bad injector now!
6. Crankshaft Position Sensor – If the crankshaft position sensor if at fault, the fuel injectors may inject too much fuel into your cylinder chamber thus disturbing the air to fuel ratio and the engine performance. Thus, replace faulty crankshaft position sensor now!

Our main motive is to achieve customer satisfaction and that’s why we will help you to diagnose P2617 code by mentioning some major symptoms below:

Common Symptoms

• Loss of engine power and acceleration is the most common symptom
• Increased fuel consumption due to leakages and damages in the fuel delivery system
• Impact on throttle resulting in improper fuel combustion
• Engine stalling and not starting
• Smoke coming out of exhaust and damaged pressure regulators

Have a look at some ways with which you can correct the P2617 code:

• Replace faulty crankshaft position sensor
• Examine fuel injection system and/or the fuel pump and ignition coils for any damages and leakages
• Examine engine performance and cooling system by physically driving the vehicle
• Check for any problems with the sensors and the wiring system for faulty connects and corrosions
• Check and replace ECM/PCM if found to not taking the input from other sensors properly
• Find and replace faulty stuck valve

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It is advisable to use a high grade factory level scanning tool to determine the type of OBD error and its possible diagnosis by an experienced technician. Based upon the conditions of the test, possibly clearing the code, and road testing the car while monitoring the data, further diagnosis may be required. Diagnosis may require multiple tools such as:

At the beginning, the vehicle is hooked up to an OBD-II scanner in order to verify that the code is present, and to check for other codes.

The initial data frame is to be freeze and the scanning has to be redone to check if the code reoccurs.

Inspect for any problem in the wiring and connectors to check for loose connections, corrosion, or shorts.

Use of special scan tools to test the crankshaft and crankshaft components may help identify the problem, as well as inspection of the engine timing and exhaust systems.

Physical problem with the connection, timing belt, manifolds, and delivery systems could cause the timing to go off far enough to trigger a code P2617.

Check for the voltage output from the crankshaft position sensor while the engine if turned off to see when the engine cranks. If the sensor is found to be faulty, replace it immediately.

Common Mistakes When Diagnosing the P2617 Code

Check of faulty wiring and connectors first. Avoid jumping straight to ECU for problems and it will give faulty test results. Follow the step by step diagnosis process at all times keeping in mind the specific make and model.

• Replacing crankshaft sensor without checking problems with other components
• Replacing PCM directly
• Not checking for faulty/damaged wiring and connectors related to circuit and sensors