P051D - OBD Trouble Code

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Error code P051D can be defined as Crankcase Pressure Sensor Circuit High. There are a lot of fumes in the engine internally when it is running. That is the reason why it is essential for the engine control module to have a perfect crankcase pressure value.

 

This is needed not only ensure the pressure does not get too high and possibly cause damage to seals and gaskets, but also it requires this value in order to recycle these burnable fumes back into the engine via the positive crankcase ventilation system.

Do you want to learn something more about P051D fault code? This trouble code is generic, which would mean that it can apply to all the vehicles which are equipped with the OBD-II or the vehicles which are made since 1996 up to the present. The specifications on the definition, the troubleshooting steps as well as repairs can always vary from one vehicle make to another.

 

What causes this problem with the Crankcase Pressure Sensor Circuit High?

 

• The engine control module might not function properly
• Defective positive crankcase ventilation valve
• Problem of water intrusion
• There can be bad electrical connection in the crankcase pressure sensor circuit
• The crankcase pressure sensor might have some quirky
• Issue of internal electrical issue within the sensor
• Issues related to PCV like broken runners/tubes, disconnected, chafed lines, etc
• The car engine might be filled with oil
• Flaws in the crankcase pressure sensor
• The crankcase pressure sensor might be open or shorted
• There can be clogged PCV system
• Moisture present in the oil

1. Crankshaft Position Sensor - OBD Code P051D can appear because of faulty Crankshaft Position Sensor.
2. Powertrain Control Module - There can be some issues with the Powertrain Control Module due to which you may see P051D code appearing over and over again. Visit us to buy best quality PCM online.
3. Engine Control Module - Are you facing some faults in your Engine Control Module? Don’t worry and get them replaced or else P051D code can turn up.
4. Camshaft Position Sensor - Engine Control Module is perfectly fine but still but having that trouble code P051D flashing? In such a situation your Camshaft Position Sensor might be faulty. Why don’t you think of getting that replaced?
5. Fuel Pressure Regulator - The P051D code can also arise due to some issues in Fuel Pressure Regulator. So, it is advised to replace them as soon as possible.
6. Engine Wiring Connectors - P051D code does not really end up spoiling your Fuel Pressure Regulator, but it might also accompany few Engine Wiring Connectors issues. We have best Engine Wiring Connectors with us.
7. PCV System - Are you facing OBD Error Code P051D? Don’t worry as you can fix this issue with new PCV System. We care for our customers, that’s why we have PCV System for every make and model.

It is essential to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P051D here:

 

Common Symptoms

 

• The check engine light can start illuminating
• The car engine might perform abnormally
• The fuel economy might start diminishing
• The gasket may start leaking
• Engine smoking black soot
• High/Low internal crankcase pressures
• Smell of fuel can start coming
• Issue of sludge in oil

If you wish to correct this fault code, then you have to follow certain steps. Correcting a problem needs your careful attention. Here are some ways with the help of which you will be able to correct the OBD Code P051D:

 

• Restore the positive crankcase ventilation valve
• Carefully correct the problem of water intrusion
• Inspect the crankcase pressure sensor
• You can always replace the crankcase pressure sensor if it is opened or shorted
• Replace the engine control module if it is not functioning properly
• If there are some faults in the crankcase pressure sensor, then you must replace it
• Correct the issue of internal electrical issue within the sensor
• Make sure that the clogged PCV system is repaired properly

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If you want to easily diagnose this trouble code, then you must follow the steps which are mentioned here as below:

 

• You can always perform proper research of Technical Service Bulletins (TSB) for known issues with the specific vehicle in the troubleshooting process.
• Advanced diagnostic steps become very vehicle specific and may require the appropriate advanced equipment and knowledge to perform accurately.
• We include basic steps below but refer to a vehicle year/make/model/powertrain specific repair guide for specific steps for your vehicle.
• You should open the oil cap on the top of the engine to inspect for any obvious signs of sludge build-up. Sludge can be caused by something as simple as a lack of oil changes, or following longer than recommended intervals
• A positive crankcase ventilation issue can cause moisture to enter the system causing sludge too. Either way, ensure your oil is clean and full
• You must keep this thing in mind to avoid overfilling the engine with oil. Do not start engine if this has happened, drain oil to bring level to an acceptable range
• Test the sensor by following manufacturer specific desired values from your service manual
• This usually entails using your multimeter and testing different values between pins. Record and compare findings to your make and model specifications. If anything is outside of specs, then you must replace the crankcase pressure sensor
• The crankcase pressure sensors are typically mounted directly to the engine block (AKA Crankcase), the harnesses and wires involved, are routed through crevices and around extreme temperature areas (i.e. exhaust manifold)

You must be aware of this when visually inspecting the sensor and circuits. The fact that these wires and harnesses are subject to the elements, inspect for any hardened/cracked wires or moisture in the harness. Keep this in mind that the connector should be connected firmly and dry of any oil residue