Skip to content
Home » 8 symptoms of bad camshaft Position Sensor and how to fix

8 symptoms of bad camshaft Position Sensor and how to fix

Camshaft position sensor

The camshaft Position Sensor, also known as a cam sensor, is a device that measures the rotation of the camshaft. It helps the engine power control system determine the best ignition timing of fuel injector timing for every driving condition. The camshaft position sensor replacement also ensures smooth car engine operation and prevents misfires.

The camshaft position sensor works to detect the position of the camshaft in your engine’s cylinders. It tells the computer how fast to run and when to change gears, so it’s an important part of your car’s engine management system (EMS).

When you have a problem with the camshaft position sensor, it will not be able to detect where your camshafts are. This can cause issues with other parts of your vehicle’s engine because they won’t be able to operate correctly when they don’t know how far apart the valves are supposed to be.

Camshaft position sensor

What is a camshaft position sensor?

The camshaft position sensor is a device that helps your vehicle’s computer know where the camshaft is. The camshaft is the part of your engine that controls the timing of the valves. For your car to run properly, your fuel injection system needs to know when to open and close the valves to let in air and fuel at just the right time.

The camshaft position sensor tells the computer where the camshaft is with its rotation. The computer uses this information to tell when to open or close each valve. This makes sure that everything runs smoothly and efficiently.

Is a temporary fix for the crankshaft position sensor good?

Unfortunately, the temporary fix to the crankshaft position sensor is not good. In fact, it’s terrible. It’ll be like having a temporary solution to your heart problems: it won’t cure your problem; at worst, it’ll kill you faster.

The crankshaft position sensor is part of the engine management system in your car models. If it’s not functioning properly, then you will likely have a problem with the engine or its fuel/air mixture.

You need to get that fixed as soon as possible because it means your car won’t start and will almost certainly damage other parts of the engine in the process. A damaged crankshaft position sensor can lead to things like:

1. Engine overheats

2. Exhaust leaks

3. Fuel pump failure

How to reset camshaft position sensor?

Resetting a camshaft position sensor is easy. All you need is a socket wrench and a few minutes.

First, turn off your car’s engine. Then, pop the hood and locate the camshaft position sensor. It’s usually on top of or near the cylinder head in the engine. You’ll see it has wires connecting to it.

Next, loosen and remove the sensor’s electrical connector using your socket wrench. After that, remove the mounting bolts that hold it in place, and with your socket wrench.

Finally, unplug one of the battery cables from its terminal for about 5 minutes to reset your car computer and then reconnect it. This will reset both your gas pedal and camshaft position sensors together so that you don’t have to worry about doing either one individually.

What happens when a camshaft sensor goes bad?

When your camshaft sensor goes bad, your engine may not start, or it may be difficult to start. In some cases, you could have misfires and trouble accelerating. You will most likely get the check engine light.

Also, when a camshaft sensor goes bad, it can cause your vehicle to run in an open-loop mode and send a false RPM signal. You should replace the sensor as soon as possible to prevent engine damage to other components of your vehicle.

The camshaft sensor is responsible for detecting the rotation of the camshaft. In a vehicle’s engine, the camshaft is what provides a gas exchange at the right time to fire the spark plug so that the car can run.

In addition, the camshaft sensor is important because it helps the car’s computer to control fuel injection and ignition timing. The sensor will send out signals to indicate when the valves in an engine’s cylinder head should open.

If a camshaft sensor goes bad, your car might suddenly stall or stall frequently, especially after it has been warmed up. Other symptoms include trouble starting your car and problems with your check engine light turning on and off.

Furthermore, if you suspect that your camshaft sensor may be going bad, you will likely need a mechanic to replace it because it requires removing parts of your car’s engine.

What causes crankshaft sensor to go bad?

Crankshaft sensors are one of the most common parts to fail on a car. The crankshaft sensor is responsible for monitoring the speed of your engine and sending an electrical signal to your car’s computer.

If this sensor fails, your car’s computer may not know how fast your engine is turning, which can cause poor fuel mileage or even make it impossible to start your cars.

There are three main causes for a crankshaft sensor to go bad:

  1. A loose connection between the sensor and its harness or wiring harness
  2. Corrosion or oxidation on any part of the sensor or wiring harness
  3. A damaged wire within either the harness or the wiring harness itself.

What to do after replacing the camshaft sensor?

Your mechanic has just replaced your camshaft sensor, which is critical to the proper operation of your vehicle. These sensors are essential for optimal performance and fuel efficiency, and they help prevent excess emissions from being released into the environment.

Your new sensor should be good to go, but here are a few steps you can take to make sure it remains in top condition.

  1. Check the engine compartment regularly for signs of leaks. If you see oil or other fluids leaking onto the sensor, it might not function properly.
  2. Make sure that your car’s engine is running correctly and the gas mileage remains high. If there are any problems with either of these things, contact your mechanic immediately so they can diagnose them before too much damage occurs.
  3. Keep up regular maintenance by changing oil and filters every time it’s necessary (or as recommended by your owner’s manual). This will keep everything running smoothly, including your camshaft sensor, and prevent expensive repairs down the road.

How to reset the crankshaft position sensor to no start?

If you have got a no-start issue your car, one of the first things you should check is the crankshaft position sensor. This sensor tells your car’s engine management system when to inject fuel into the engine cylinders.

If it’s not working properly, your engine could have poor performance or may not start at all.

To reset this sensor:

  1. Turn it off your car and let it sit for 30 minutes
  2. Disconnect the battery terminal on the positive side of the battery (with the car off) for at least 10 seconds
  3. Reconnect the terminal and start your vehicle

Replaced camshaft position sensor but still get code?

If you’ve replaced your camshaft position sensor and still get a code, it could be that the sensor is bad. Make sure to check the wiring harness for any damage or corrosion because that could be the cause of the issue.

If you’ve checked the wiring harness and everything looks good, you might have to replace the sensor again.

Also, if you get this code after replacing the camshaft position sensor, it could mean a few things:

1) You didn’t replace it right. If it wasn’t seated properly or wasn’t torqued down properly (both very important), then it could be incorrect. To check this out, take off the top cover again and look at where the sensor was bolted down to make sure that it’s still in place and not loose or just sitting there loosely without being bolted down.

2) You didn’t refill your engine with enough oil. If you didn’t put in enough oil when you refilled your engine after removing the old sensor (or if you didn’t refill it at all), then that could also be why you’re still getting this code. It’s important to note here that if you leave out even one drop of oil during this process, your car will not run correctly.

How to start a car with a bad crankshaft sensor?

If your car is making a clicking noise, it may be a bad crankshaft sensor. This can be a problem for your engine and make it hard to start the car. You can still start the car if you know how to do it correctly.

  1. Get in your car and turn the key to position 1 (if your car starts in position 2).
  2. Turn on the ignition and let it run for about 15 seconds while holding down the gas pedal.
  3. If this doesn’t work, try turning the key off, then back on again while holding down the gas pedal until you hear a click from under your hood. This indicates that something has changed inside your engine and should allow it to start up successfully.

Can the throttle position sensor affect transmission shifting?

Yes, a throttle position sensor can affect transmission shifting. A throttle position sensor is a device that measures the amount of air going into the engine. It sends this information to the ECM (engine control module) so that it can determine how much fuel should be injected into the engine.

The ECM uses this information to adjust how much fuel is injected for each gear and speed, which helps maintain smooth shifting.

If your throttle position sensor is faulty, then it may not be sending accurate information to your ECM. This means that your transmission could shift erratically or even slip out of gear while driving.

What are the symptoms of a faulty camshaft sensor?

A faulty camshaft sensor can cause your car to run poorly and cause serious types of issues on the road. It’s important to know what symptoms to look for if you think something is wrong with your car’s engine.

If you notice that your engine is running rough, or if it’s not making any noise at all, it could be because of a faulty camshaft sensor. If this happens, you should immediately turn off your engine and call for help from a mechanic or auto shop near you.

The following are other symptoms that might mean something is wrong with your car’s engine:

1. Your car doesn’t startup as quickly as usual

A faulty camshaft sensor is one of the most common causes of a car, not startup as quickly as usual. A camshaft sensor is positioned on the front of the engine and sends signals to your car’s computer every time that your car’s crankshaft rotates which it helps diagnose problems like misfires, spark knock and other harmful conditions.

2. Your car shakes when it idles or accelerates

You can count on your Camshaft Positioning Sensor to alert you that there is a problem if it malfunctions. When your car suddenly shakes when it idles or accelerates, it could be due to a faulty camshaft positioning sensor.

While this may mean you will have to make an appointment with a mechanic, many drivers can troubleshoot and fix the issue without calling a professional.

3. You hear clunking noises when you shift gears

If your car makes clunking noises when you shift gears, the camshaft sensor may be faulty. This sensor can wear out over time, which can cause damage to other components of your transmission system.

A car with a faulty camshaft sensor will feel like it’s in neutral when you’re driving, and the engine will not rev up properly as you accelerate.

4. Engine misfire and/or hesitation

A camshaft position sensor signals the engine control unit to operate the camshaft and can have different effects on the car. A faulty sensor can cause misfires, rough running, hesitation or stalling, difficulty in starting and poor acceleration. It could also make your car break down altogether.

5. Low compression

A low compression engine, also known as a dead or a blown engine, is an engine that will not start because it has lost the explosive power needed to ignite the fuel inside the cylinders. The main cause of this is a faulty camshaft sensor.

6. Poor performance due to poor fuel economy

If your engine is struggling to run properly and you’re experiencing poor fuel economy, the camshaft sensor may be causing it. This sensor tells the engine how fast to rotate. If it goes bad, the engine will think that it needs more fuel, which can cause performance problems.

7. Poor idle quality and/or stalling

When a camshaft position sensor is not working correctly, it can cause problems with the vehicle starting, poor idle quality, and even stalling. A faulty camshaft position sensor can be caused by a number of different issues, such as faulty wiring or electronics.

We recommend replacing the camshaft position sensor with our genuine Toyota camshaft position sensors when they start to malfunction in order to restore optimal operation of your vehicle.

8. Onboard diagnostic trouble codes (OBD)

A faulty camshaft sensor can trigger a list of error codes. If you are getting a check engine light and you don’t know what it is, it’s best to get your vehicle looked at by an auto mechanic.

How much does it cost to replace a camshaft sensor?

Camshaft sensors are responsible for monitoring the position of the camshaft in your car. The camshaft play a major role to control the opening and closing of your engine valves, and if it’s not working properly, it can cause a number of different problems.

The price depends on where you live and what kind of car you drive.

Here are some examples:

If you live in California, repairing or replacing a camshaft sensor will cost around $200.

If you live in Washington state or Oregon, repairing or replacing a camshaft sensor will cost around $175.

If you live somewhere else in the United States, repairing or replacing a camshaft sensor will cost around $150.

Can I drive with a camshaft position sensor problem?

Sure, you can drive with a camshaft position sensor problem. But you should probably get it fixed ASAP.

The camshaft position sensor is a device that tells your vehicle’s computer how far the valves are open and closes them at the right time to make sure that your engine runs at its best efficiency.

If this sensor is malfunctioning, it can cause problems like “Check Engine” lights coming on, poor gas mileage, and more.

If you have an intermittent camshaft position sensor problem, you may be able to drive for a few miles before the light comes back on. So, if you’re only going a few miles away from home, go ahead and hit the road.

And if it’s an ongoing issue (like your Check Engine light is always on), we recommend getting it checked out ASAP by a qualified mechanic.

Does the camshaft position sensor affect oil pressure?

Yes, a camshaft position sensor can affect oil pressure. The camshaft position sensor is part of your car’s engine control system. It helps monitor and regulate the oil pressure in your engine by measuring how fast the pistons are moving.

If this sensor is broken, or if it malfunctions, you could experience engine problems that affect oil pressure.

These include:

  1. Bad oil pressure readings
  2. Low oil pressure warnings displayed on your dashboard
  3. A low oil level warning is displayed on your dashboard (this means there isn’t enough oil in your engine)

Is it worth replacing a camshaft?

It depends on whether or not your car needs one. If you have an older vehicle that’s been around for a while, there’s a chance that your camshaft could be wearing out. If so, you should consider replacing it as soon as possible to avoid any damage to the engine.

A worn-out camshaft can cause several problems in your vehicle’s engine. For example, it won’t allow the pistons to move at their optimal speed and could result in premature wear on other parts of the engine, such as valves or bearings.

This means that replacing it early on can save you money down the line by preventing major repairs down the road.

What causes a camshaft to fail?

A camshaft is a part of the engine that turns. It’s a rotating piece of metal with lobes or cams on it that open and close valves in the engine.

To understand why a camshaft can fail, you need to know what causes it to fail.

The three main reasons why a camshaft fails are:

1. Stress on the bearings

The camshaft bearings sustain a lot of stress as a result of their position within the engine, meaning that there is always a chance that these bearings will fail. Failure to replace worn-out or broken bearings can cause catastrophic damage.

It is important to keep the camshaft bearings properly lubricated to prevent wear and failure. It’s vital to use the correct oil viscosity for your engine so that the oil can properly flow through the bearing. This can help protect against excessive amounts of centrifugal force, which directly stresses the camshaft bearings.

2. Excessive wear of the lobes

There are many factors that can cause a camshaft lobe to fail. If a lobe has been worn beyond its specifications, the camshaft is destined for failure. The most common cause of excessive lobe wear is improper engine timing setup. Other causes include improper oiling, lack of lubrication, over-revving, and deterioration of piston rings or valves.

3. Friction between lobes and valves

Friction between the lobes and valves causes increased heat, which can lead to a camshaft failure. This is usually the result of metal fatigue from a slight wear pattern caused by the lack of proper lubrication.

Since there is friction between both lobes and valve heads, it is important to keep the lobe profiles free from deposits. This is achieved by regular camshaft reconditioning, which involves removing these deposits and smoothing down any high points on the lobe profile to extend its service life.


The camshaft position sensor is an electronically controlled switch that provides an electrical signal to the engine control unit (ECU). The ECU is a computer that uses input from sensors to control various engine operations.

It decides when to fire fuel injectors and adjust ignition timing based on information from the camshaft position sensor. The camshaft position sensor is mounted directly to a camshaft, which drives the chain or belt that turns the camshaft sprocket.

As the sprocket turns, it moves two contacts electrically connected to two wires inside the sensor. You can keep reading to find out more on this page.