What is Trouble Code P0520-Engine Oil Pressure Sensor Circuit?

Trouble code P0520 is an indication that there is an issue with the engine oil pressure sensor circuit, [refer to picture of sensor]. This code is often accompanied by a warning light on the dashboard and can lead to serious problems if not addressed promptly.

The engine oil pressure sensor is responsible for monitoring the pressure of the oil within the engine. It sends this information to the vehicle’s computer system, which then uses it to make adjustments to the engine’s performance. If the oil pressure falls below a certain level, the computer will trigger the warning light and generate the P0520 code.

There are several potential causes for this trouble code. One of the most common is a faulty oil pressure sensor. The sensor may be damaged or simply not functioning properly, resulting in inaccurate readings. Another possible cause is a malfunctioning oil pump, which is responsible for pumping oil through the engine and maintaining proper pressure.

Other potential causes for this code include low oil levels, clogged oil filters, and damaged oil lines. These issues can all lead to reduced oil pressure and trigger the P0520 code.

To fix this issue, the first step is to diagnose the root cause. This will typically involve using a diagnostic tool to read the code and perform a series of tests on the vehicle’s systems.

If the issue is a faulty oil pressure sensor, it will need to be replaced. This can typically be done fairly easily by a mechanic or a skilled DIYer. The sensor is usually located near the oil filter and can be accessed by removing a few bolts.

If the issue is a malfunctioning oil pump, it will need to be replaced. This is a more complex repair that should be done by a professional mechanic. The oil pump is typically located within the engine block and requires disassembly of the engine to access it.

If the issue is low oil levels, the solution is simply to add more oil to the engine. It is important to use the correct type and weight of oil as specified in the owner’s manual. If the oil filter is clogged, it will need to be replaced. This is a relatively simple repair that can be done by a DIYer or a mechanic.

If the issue is damaged oil lines, they will need to be repaired or replaced. This is a more complex repair that should be done by a professional mechanic.

It is important to address the P0520 code promptly to avoid more serious issues. If the oil pressure falls too low, it can lead to engine damage and costly repairs. It is also essential to regularly check the oil levels and change the oil filter as recommended by the manufacturer to prevent future issues.

In summary, trouble code P0520 is an indication that there is an issue with the engine oil pressure sensor circuit. Potential causes for this code include a faulty oil pressure sensor, a malfunctioning oil pump, low oil levels, clogged oil filters, and damaged oil lines. To fix the issue, the root cause must be diagnosed and addressed, which may involve replacing components or performing repairs. It is important to address this issue promptly to avoid more serious problems and to maintain the overall health of the vehicle.