How to Troubleshoot Crankshaft Position Sensor Issues

How to Troubleshoot Crankshaft Position Sensor Issues – The crankshaft position sensor is an important component of your engine. It’s responsible for measuring the RPM of the engine and sending that information to the computer, which uses it to determine how much fuel to deliver.

How to Troubleshoot Crankshaft Position Sensor Issues

If your crankshaft position sensor goes offline or fails, you might notice a decreased fuel economy. This is because the computer will learn to adjust its fueling based on what it thinks the engine needs. So how do you fix this issue? You must be systematic in your troubleshooting process so that you can find and correct any errors in order to get your car running normally again.

Troubleshoot Crankshaft Position Sensor Issues

What is a Crankshaft Position Sensor?

The crankshaft position sensor is a component of your engine that detects the rotational speed of the engine’s crankshaft. It’s responsible for sending this information to the car’s computer, which then uses it to determine how much fuel should be delivered. If your crankshaft position sensor stops working, you might notice a decreased fuel economy because the computer will learn to adjust its fueling based on what it thinks the engine needs.

Read more: How to Diagnose and Repair a Car’s Engine Control Unit

The Symptoms of a Crankshaft Position Sensor Malfunction

If your engine suddenly starts experiencing issues with fuel economy, it could be a problem with the crankshaft position sensor. The symptoms for crankshaft position sensor problems are similar to those of other sensor issues, like airbag warning lights. One of the most common symptoms is when your car suddenly sputters or stumbles during acceleration. If you’re having problems with your car, simply try to fix it yourself and then contact a mechanic if you can’t figure out what’s going on. Here are some more symptoms that might indicate a malfunctioning crankshaft position sensor:

  • The car accelerates slowly
  • Engine speed is lower than usual
  • The engine doesn’t come back to idle after being driven
  • Fuel efficiency decreases
  • When driving uphill, the engine speeds up while going uphill and slows down while going downhill

How to Troubleshoot and Fix a Crankshaft Position Sensor Issue

Step 1: Check the Engine Codes

The first thing you should do is check your engine codes so that you know what’s happening. There are three codes that could be the problem: P0141, P0142, and P0442. If any of these exist, then it is likely that the cause of the issue is a faulty crankshaft position sensor.

Step 2: Disconnect Your Battery

The next step would be to disconnect your battery in order to test if the issue is indeed with the crankshaft position sensor. If your car starts fine without a battery running through it, then you can safely assume that there isn’t an issue with your crankshaft position sensor.

Step 3: Clear Your Vehicle’s Memory

If you still are not able to start your car after following these steps, then try clearing your vehicle’s memory by turning off the ignition and removing any accessories or devices connected to it (such as the radio). This will clear out whatever information may have been stored in your computer’s memory since something went wrong before. After doing this step, turn on your car and see if it starts up normally again.

What Else Could Cause a Crankshaft Position Sensor Issue?

For starters, your crankshaft position sensor could be malfunctioning. Other problems that can cause a sensor to go offline include bad wiring or a loose connection between the sensor and the computer. It’s important to check the device before replacing. In fact, you should run a diagnostic check on it first to make sure that it is functioning properly. If it isn’t, you might have to replace the entire crankshaft position sensor with new parts.