P252C OBD Error Code: Problem & Solutions

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When you find out that there's OBD code set in your vehicle don’t panic. It’s just a signal from your vehicle Powertrain Control Module (PCM) to focus attention on a problem that is going on in your vehicle. The P252C code is defined as an Engine Oil Quality Sensor Circuit Low, this is an OBD-II trouble code and be resolved by performing certain diagnostic steps. When the engine oil quality sensor fails to work as needed the P252C code will be set by the ECM. You can know more about the issue, and how to resolve it here. So breathe out all the stress and read on.

Your car has an engine oil quality sensor which will inform the Engine Control Module or ECM about the level of oil, it’s temperature and quality. These signals inform the ECM about the overall quality of the engine oil present in your vehicle. Hence, the engine quality sensor is a very important element present in this circuit and depending on the vehicle model will be mounted on the engine oil pan. No matter where it is located in the vehicle, it will perform the same task in all vehicle makes and models. The issues will also be present on the instrument cluster of your car, some vehicles may have gauges or readouts that inform about the oil level, pressure and temperature. How and where all this is displayed varies from vehicle to vehicle.

What causes this problem with the Engine Oil Quality Sensor Circuit Low?

• The engine oil quality sensor is having some defects
• Low level of the engine oil
• Poor quality of engine oil
• Damaged or faulty wiring
• Damages like corrosion on the connector, it may also be loose
• PCM is non functional

1. Engine Oil Quality Sensor - Monitors the quality of the engine oil. Poor quality oil can cause the P252C error, fix this issue by repairs otherwise opt for replacement.
2. Engine Control Module - The ECM monitors all the modules in the vehicle, and if it notices an issue with the engine oil quality sensor, it will set the P252C code. Try to repair or opt for replacement of the faulty ECM to avoid damage to the vehicle. Find your vehicle specific ECM on PartsAvatar, order from the comfort of your home. We ship to the remotest corners of Canada.
3. Oil Pressure Gauge - This is where the pressure of the oil is presented to the driver. Any problems will have to corrected to let go of the P252C. You can try to repair the issue, if that doesn’t help, simply replace the gauge. Order online on PartsAvatar and have your order reach you in less than a weeks’ time.
4. Powertrain Control Module - Is the main processing unit of your vehicle. Codes like P252C are also set if there’s a faulty PCM. You can resolve PCM issues by repairs or replacement. Replacements will require reprogramming by a professional. Search from a wide range of PCM online at PartsAvatar, we ship orders above $99 free!
5. Engine Wiring Connector - Is part of the engine wiring harness and is the connecting point at various components. Damaged connectors can cause several issues, so repair it or replace it as needed. Find the perfect one compatible with your vehicle on PartsAvatar. You can speak with our online customer care executive to clarify any doubts you may have as well.
6. Diagnostic Tools - These tools help in diagnosing problems with your vehicle. Correct diagnostic tools can help resolve codes like P252C easily. Find the tools you need on PartsAvatar, we offer doorstep delivery across Canada.

Willing to know some common symptoms of OBD Code P252C? Your wish is our demand. Have a look at them below:

Common Symptoms

• You may experience difficulty in cranking the engine
• The oil pressure gauge reading is low
• The Check engine light is on
• Check Oil instruction is also present on your vehicle's instrument cluster

We have listed out some components that may need repairs or replacements, this would help you to correct the occurrence of OBD Code P252C. They are as follows:

• Engine oil quality sensor
• Connectors and wiring
• Change of oil and its filter
• Ground straps
• Engine Control Module

There is no need to get strained if your OBD Code is still flashing up as we are here at your service. Have a look at our superior variety of Engine Oil Quality Sensor, Ecm, Oil Pressure Gauge, Oil Quality Sensor, Pcm, Connector, Oil Temperature, Oil Level and many more. Now all your problems would vanish within no time.

If you want to easily diagnose this fault code P252C, then all you have to do is to follow the steps which are mentioned below:

• Get your vehicle's specific Technical Service Bulletins and see if you can find the code and ways to resolve it there. The TSB will be source of reference through the diagnostic procedure.
• Make sure you match the TSB’s accurately with your vehicles, year, make, model and engine details.
• Now check the condition of the engine oil and see if it is at the appropriate level or not. You will have to refill it if it’s running low.
• Locate all important components using the TSB. Find the components related to the engine oil quality sensor circuit and inspect if there’s any damages visible.
• Visually inspect the wiring for any damages lie bare wires, burned or chafed surfaces, rubbing, scraping etc. Repair as needed or opt for replacement.
• Check if connectors are securely set, or if there’s any corrosion or damage to the pins. Sometimes pins get bent as well. Perform this step with the connectors and wires of the ECM as well.
• In order to verify that everything is configured correctly, refer the TSB. Verify the configurations of the fuse and fusible links as well.
• The correct instruments will help you do voltage checks. You will need a DVOM and your TSB again.
• Ensure the reference voltage is well within the range specified by your vehicle's manufacturer. If you find that there is an absence of power source or ground, then you will need to perform continuity tests to verify the strength of the wiring, connectors and other components.
• These continuity tests have to be performed after removing power from the circuit and the readings for wiring and connections should show 0 ohms of resistance. Resistance of no continuity is indicative of improper wiring, or shorted or corroded wires. These must be repaired and replaced as needed.

Common Mistakes When Diagnosing the P252C Code

• Failed Oil quality sensor
• The Powertrain Control Module (PCM) has stopped working
• Problems with wiring present