How to Reset Crankshaft Position Sensor and Get Your Engine Started.

To reset crankshaft position sensor no start, disconnect the battery terminals and wait for a few minutes before reconnecting them. This action will reset the car’s computer and resolve the no-start issue caused by a malfunctioning crankshaft position sensor.

The crankshaft position sensor is a critical component in modern car engines. It’s responsible for monitoring the rotation of the crankshaft and transmitting this information to the car’s computer. When the sensor malfunctions, the car won’t start. If you’re experiencing this issue, the first thing you can do is reset the sensor to see if it resolves the problem.

Disconnecting the battery terminals and waiting for a few minutes before reconnecting them should reset the car’s computer. If this doesn’t work, it’s best to consult a professional mechanic for further diagnosis and repair. Remember, maintaining your car’s sensor systems is crucial to ensuring optimal performance and longevity.

How to Reset Crankshaft Position Sensor and Get Your Engine Started.


Diagnosing A Faulty Crankshaft Position Sensor

The crankshaft position sensor (cps) is an essential part of your vehicle’s engine management system. It sends information to the engine control module (ecm), allowing it to adjust the fuel and ignition systems. Without this vital information, your engine may not start or run correctly.

Here we’ll discuss the common signs of a damaged cps and how to use an obd-ii scanner to identify cps errors.

Common Signs Of A Damaged Cps

Detecting a faulty crankshaft position sensor can be tricky, but below are some common signs that you may have a failing cps:

  • Engine stalls or doesn’t start: If the cps sends incorrect information to the ecm, the engine may not receive the correct fuel and ignition. This can cause the engine to stall, or it may not start at all.
  • Rough idling: If the cps doesn’t send the right signals to the ecm, the engine’s fuel mixture will be incorrect, resulting in rough idling.
  • Poor performance: If the cps sends the wrong signals to the ecm, the engine may perform poorly or erratically, causing a loss of power and lower acceleration.
  • Check engine light: If the cps fails, the ecm will register a fault code and illuminate the check engine light.

How To Use Obd-Ii Scanner To Identify Cps Errors

The easiest way to diagnose a malfunctioning cps is to use an obd-ii scanner. Most modern vehicles have an obd-ii port located under the dashboard on the driver’s side. Follow these steps to use an obd-ii scanner to identify cps errors:

  • Turn the ignition switch to the on position. Do not start the engine.
  • Locate the obd-ii port and insert the scanner’s connector into it.
  • Follow the scanner’s instructions to establish a connection with the ecm.
  • Look for any codes related to the cps or the engine speed sensor (ess). If the scanner indicates there is an error code related to the cps, it means that it is malfunctioning, and you’ll need to replace it.
  • Clear the code using the scanner.
  • Test-drive the vehicle to see if the problem persists.

Diagnosing a faulty cps needs a lot of care and attention. If you experience any of the symptoms mentioned above, it’s essential to take your vehicle to a professional mechanic to diagnose the problem. Replacing the cps may be necessary to avoid serious engine problems, so it’s best to get it sorted as soon as possible.

Understanding The Cps Resetting Process

Resetting the crankshaft position sensor (cps) is a crucial step when your car engine refuses to start. A damaged or faulty cps may prevent the engine from starting, and you will need to reset it to get your car back on the road.

If you don’t know how to reset the cps, do not worry! In this guide, we will explain the process step-by-step.

Step-By-Step Guide To Reset The Cps

  • Identify the cps location: Before starting the resetting process, you should locate the cps in your vehicle. This information is available in the vehicle owner’s manual.
  • Disconnect battery cables: Ensure that you turn off the engine and disconnect the battery cables before starting the resetting process. This will prevent any electrical mishaps.
  • Remove the sensor: Carefully remove the cps by unscrewing the bolts that hold it in place. Do not force it as it might be delicate.
  • Wait for some time: After removing the sensor, wait for about 10-15 minutes before continuing the cps resetting process. This time allows your vehicle’s power capacitors to discharge completely.
  • Reinstall the cps: After the wait time, reinstall the cps and make sure it fits properly into its groove. Then, tighten the bolts that hold it in place.
  • Reconnect the battery cables: After installing the cps, reconnect the battery cables and ensure they are tightly secured.
  • Turn on the engine: Now you’re ready to turn on the engine and see if your car starts. If everything was done correctly, then the engine should start without any issues.

Tools Required For Resetting The Cps

Resetting the cps requires some tools that you might need to purchase beforehand. These include:

  • Socket wrench: To unscrew the bolts that hold the cps in place.
  • Multimeter: To test the electrical connection of the cps.
  • Safety goggles: To protect your eyes from any electrical sparks while working on the cps.

Make sure you have these tools before starting the process.

Resetting the cps can be daunting for beginners, but with this step-by-step guide, you will be able to do it yourself. Always disconnect the battery cables before starting the process to avoid any electrical mishaps, and make sure you follow the guide carefully to avoid any unnecessary damage.

Good luck resetting your cps, and hopefully, your engine will start again!

Resetting Crankshaft Position Sensor: The Diy Approach

The crankshaft position sensor (cps) plays a crucial role in your vehicle’s engine. It is responsible for monitoring the position and speed of the crankshaft and sending this information to the engine control module (ecm). If you’re experiencing engine problems, such as misfires or stalling, there’s a chance that your cps needs to be reset.

Luckily, resetting your cps can be accomplished through a few simple steps, which we’ll detail below in a diy approach.

How To Manually Reset The Cps

Before proceeding with the cps reset, it is essential to take safety measures and ensure the engine is cool and the vehicle is in park or neutral gear with the emergency brake on.

Here are the steps:

  • Locate the cps: Usually, it is located near the engine’s flywheel or near the front of the engine block.
  • Disconnect the battery: Before proceeding with any works under the hood, it’s always best practice to disconnect the battery.
  • Disconnect the electrical plug from the cps.
  • Remove the screws/bolts that hold the cps in place: They can be removed by hand or with suitable tools.
  • Slowly and carefully remove the cps from the engine.
  • Clean the cps: Use electrical contact cleaner or brake cleaner to clean the cps thoroughly.
  • Install the cps back: Ensure it is correctly positioned and secured using screws/bolts.
  • Reconnect the electrical plug.
  • Reconnect the battery: Ensure all lights have been turned off before reconnecting.

What To Do If The Diy Approach Fails

While resetting the cps is relatively easy, it might not be the best approach in some scenarios. If the cps reset doesn’t solve the issue, the following steps should be taken:

  • Have your vehicle diagnosed: You can go to an auto repair shop or purchase an obd scanner, connect it to your car’s obd port to communicate with the ecm and retrieve any error codes that could point to other issues.
  • Replace the cps: If cleaning and resetting the cps does not work, have it replaced with a new one.
  • Seek professional help: If the two steps above do not work, it is best to look to professional assistance, such as taking your car to a qualified mechanic or requesting a mobile mechanic’s services.

Resetting your cps is not an overly complicated process, and it can save you both time and money. By following the simple steps above and using appropriate precautions, you can take a diy approach to solving engine problems related to the crankshaft position sensor.

Professional Help With Cps Resetting

Resetting the crankshaft position sensor (cps) might sound complicated, but it might be necessary to keep your engine running efficiently. As a car owner, you can reset the cps yourself or seek a professional’s help if you’re not confident in your skills.

In this section, we’ll look at when to seek professional help and how much it costs to reset the cps at a dealership.

When To Seek Professional Help

If you’re not confident in your ability to reset the cps or don’t have access to the right tools, seeking professional help might be the best option. Here are some situations that require professional assistance:

  • If the cps needs replacement: When the cps is damaged or beyond repair, it’s best to consult a professional mechanic as resetting it won’t solve the problem.
  • If you’re not confident in your skills: Resetting the cps requires some mechanical expertise, and if you don’t have the know-how or the tools, it’s best to leave the work to a professional.
  • If the engine has multiple issues: Sometimes, the cps might need resetting, and there could be other underlying engine problems. A professional mechanic can diagnose and solve other issues that might be affecting your engine’s performance.

How Much Does It Cost To Reset The Cps At A Dealership?

Resetting the cps at a dealership can be expensive as they charge an hourly rate and have a higher markup on parts than independent mechanics. The cost varies depending on the car make and model, but on average, it can cost between $100 to $200.

Here are some factors that can affect the cost:

  • Geographic location: Dealerships in high-cost cities or areas charge more than those in low-cost regions.
  • Technician’s expertise: Experienced technicians charge more than new technicians.
  • Additional repairs: If there are additional repairs, the cost may go up as the technician will spend more time on the car.

Resetting the cps might be necessary to keep your engine running, and you can do it yourself or seek a professional’s help. If you’re not skilled in mechanics or don’t have access to the tools, seeking professional help is the best way to go.

However, if you decide to go the dealership route, be prepared to spend a significant amount of money.

Frequently Asked Questions On How To Reset Crankshaft Position Sensor No Start

What Are The Symptoms Of A Bad Crankshaft Position Sensor?

A faulty or bad crankshaft position sensor can cause a no start, intermittent stalling or misfiring, decrease in acceleration, engine vibration, and poor fuel efficiency.

Can A Bad Crankshaft Position Sensor Cause A Car Not To Start?

Yes, a bad crankshaft position sensor can cause a car not to start. This component is responsible for providing the engine management system with the accurate engine position for ignition timing.

How Much Does It Cost To Replace A Crankshaft Position Sensor?

The cost of replacing a crankshaft position sensor varies based on the make and model of the vehicle. Typically, the part itself costs between $50 and $200, and installation can range from $100 to $200 depending on the mechanic’s hourly rate.

How Do You Reset A Crankshaft Position Sensor?

To reset a crankshaft position sensor, disconnect the battery and wait for a few minutes before reconnecting it. If the issue persists, use a code scanner to diagnose the issue and reset the sensor’s data.

How Long Does It Take To Replace A Crankshaft Position Sensor?

Replacing a crankshaft position sensor can take anywhere from one to two hours depending on the complexity of the repair and accessibility of the component. An experienced mechanic can complete the task quickly and efficiently.

How Important Is A Crankshaft Position Sensor For The Car’S Engine?

A crankshaft position sensor is critical to the operation of an engine. It works by detecting the location of the crankshaft as it rotates and communicating this data to the engine’s computer. Without a properly functioning sensor, the engine may not start or run efficiently.


Now you know how to reset the crankshaft position sensor to fix the “no start” issue. It is essential to follow each step carefully to ensure the successful reset of the sensor. Don’t forget to prepare the necessary tools and safety equipment before starting the process.

A faulty crankshaft position sensor can be frustrating, but thankfully, it’s easy to fix. Remember to check the sensor periodically to prevent sudden no-start situations. By following the guidelines in this blog post, you’ll be able to reset the sensor like a pro.

Your engine will be up and running in no time. We hope this guide was helpful to you in resolving your crankshaft position sensor issues. Thanks for reading!

Related Articles

Leave a Reply

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

Back to top button
error: Content is protected !!