Your oil pressure sensor may malfunction over time and, as a result, provide inaccurate readings. This article will examine some of the symptoms of a faulty oil pressure sensor in a vehicle. 

It is critical to maintain proper oil pressure in the engine to ensure that all engine components are properly lubricated. 

The oil pressure sensor monitors the oil pressure in your engine and indicates whether it is low or high. If your oil pressure sensor fails, it can display incorrect readings, resulting in incorrect oil pressure in the engine and damage to engine components. 

Symptoms of a Bad Oil Pressure Sensor 

Low Oil Light Warning 

The low engine oil warning appears on the dashboard when the engine runs out of oil. If the oil pressure sensor is faulty, the oil pressure readings will be incorrect. So, you may notice a low oil level warning on your dashboard. Sometimes, you may also see the oil light blink due to this.

Check the oil level with a dipstick. If you find out that the oil level is normal, there is a chance that the oil pump is not pumping enough oil into engine components. But the oil pressure sensor is faulty if your engine is working smoothly without any cluttering sound. 

When the oil tank is full, the oil typically lasts 7,500-10,000 miles. If you have previously experienced a false low oil level alarm, inspect the oil pressure sensor. 

Oil Pressure Light Flashes On and Off

When the normal oil pressure in your engine is low, the oil pressure light may blink. This means that engine components are not receiving adequate lubrication. If you hear a clunking sound from your engine or if it is performing poorly, this could indicate that something is wrong with your engine, causing oil pressure to drop. 

However, if the engine is running smoothly and you can’t figure out why the oil pressure light is blinking, a faulty oil pressure sensor could be the cause. 

Poor Engine Performance 

If the oil pressure sensor fails, it can give you incorrect oil pressure readings. It is possible that your engine is low on oil or has low oil pressure, but the gauge displays normal oil pressure due to a faulty oil pressure sensor. 

In these cases, inspecting the engine’s performance is the only way to determine if the oil pressure sensor is faulty. If you notice any overheating or a cluttering sound, but your oil pressure readings are normal, have your oil pressure sensor inspected. 

Incorrect Oil Pressure Gauge Readings 

The gauge measures oil pressure from 0-100 (psi). These readings can be found on the car dashboard. If the oil pressure sensor fails, the oil pressure gauge will display incorrect readings. 

Signs that your oil pressure gauge is showing wrong readings are as follows. 

How to Fix a Bad Oil Pressure Sensor 

Oil pressure sensors can fail if they become clogged or have a problem with their wiring. 

We must first remove the oil pressure sensor from the engine to clean or replace it. So, here are a few steps for removing oil pressure from the engine.  

Let’s start with the tools needed – 

  1. Oil pressure sensor socket
  2. Ratchet set 
  3. Torque wrench 
  4. Jack stands. 
  5. Safety glasses 

Steps to Remove Oil Pressure Sensor 

  1. Put on your safety goggles. Use a jack stand to raise the car level. 
  2. The oil pressure sensor is between the oil pan and the filter. First, make sure the negative battery cable is disconnected. 
  3. Disconnect the oil pressure sensor’s electrical connector. 
  4. Loosen the oil pressure sensor with an oil pressure sensor socket. 

After safely removing the oil pressure sensor, inspect it to see its condition. The following can be possible conditions:   

  • The oil pressure sensor can rust over time. If the sensor is jammed, it can be cleaned simply by washing it with alcohol and then wiping it down with a clean cloth. 
  • Your engine’s oil pressure sender passage may be clogged. The oil pressure sender is in charge of converting the oil pressure value into electrical signals. The oil pressure sensor will produce incorrect readings if these passages become clogged. In this case, you should hire a mechanic to clean the pressure sender passage. 
  • If the oil pressure sensor is installed incorrectly, the oil pressure readings will be incorrect. Overtightening the oil pressure sensor can crack the hose or loosen the threads. Make sure that it is correctly installed. 
  • If the oil pressure sensor is damaged beyond repair, it is best to replace it. Ensure that the oil pressure sensor is the correct size and that it is replaced. 

How to Replace an Oil Pressure Sensor 

  1. Apply sealants to the threads of the oil pressure sensor. 
  2. Using the torque wrench, tighten the oil pressure sensor. 
  3. Reconnect the electrical connector. Then connect the negative battery cable.

Just a quick video below incase you’re feeling to lazy to read the steps:

FAQ’s on Bad Oil Pressure Sensor

The cost of replacing the oil pressure sensor ranges between $100 and $150. The labor cost will be between $60 and $90, with the remainder being the cost of parts. The cost may differ depending on whether you buy original or local parts.


To summarize, the oil pressure sensor is critical for daily monitoring of your vehicle’s oil pressure. A bad oil pressure sensor can cause an oil light to illuminate or a faulty oil pressure gauge reading. 

Bad oil pressure sensors can unknowingly cause severe damage to engine components. If it’s faulty, get it repaired as soon as possible. 

Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *