Replaced Crankshaft Position Sensor But Still Get Code
Crankshaft Position Sensors (CPS) are an important part of the modern vehicle engine. They provide information about the position of the crankshaft in relation to the ignition system, allowing the engine to be accurately timed. Unfortunately, crankshaft position sensors can sometimes fail, resulting in a code being thrown by the vehicle's computer. Many drivers who have replaced the CPS, only to find that the code persists, can be understandably frustrated. In this article, we will explore the possible causes and solutions for a CPS code that persists after the sensor has been replaced.
Understanding the Crankshaft Position Sensor
The crankshaft position sensor is essentially a type of speed sensor, which measures the speed and position of the crankshaft. The information is then sent to the vehicle's computer, which uses it to control the timing of the spark plugs and other components of the ignition system. When the CPS fails, the engine may misfire, or the vehicle may be unable to start.
Why the Replaced CPS Could Still be Failing
When a driver replaces the CPS, it is important to make sure that the new one is of the correct type and is properly installed. If the new CPS is not the correct type, or it is not installed properly, it may still be failing. This can lead to the same code being thrown, even after the CPS has been replaced.
Other Causes of a Persistent CPS Code
In some cases, a persistent code may not be caused by the CPS at all. If the code is related to the ignition system, it could be caused by a faulty spark plug, spark plug wire, or ignition coil. If the code is related to the fuel system, it could be caused by a faulty fuel injector or fuel pump. Therefore, it is important to diagnose the underlying cause of the code before replacing the CPS.
Checking the Wiring and Connectors
If the CPS has been replaced, but the code persists, the first step should be to check the wiring and connectors. It is possible that the wiring or connectors have become damaged or corroded, resulting in a poor connection. This can prevent the CPS from communicating with the vehicle's computer, resulting in the code being thrown.
Replacing Other Ignition Components
If the wiring and connectors are in good condition, it may be necessary to replace other ignition components, such as the spark plugs, spark plug wires, or ignition coils. These components can sometimes fail, resulting in a code being thrown. Therefore, it is important to inspect these components and replace any that are worn or damaged.
Testing the New CPS
Once the wiring and connectors have been checked, and any other ignition components have been replaced, the new CPS should be tested. This can be done by connecting a scan tool to the vehicle's computer and monitoring the data stream. If the CPS is functioning properly, the data stream should indicate that the crankshaft is rotating at the correct speed and position.
Conclusion
Replacing the crankshaft position sensor is not always the solution to a persistent code. It is important to make sure the new CPS is the correct type and is properly installed. If the code persists after the new CPS has been installed, it is important to check the wiring and connectors, as well as any other ignition components that could be causing the issue. If all else fails, the new CPS should be tested to make sure it is functioning correctly.
Code P1330, Replaced Cam and Crankshaft Sensor, Still No Start
Replaced camshaft position sensor but still get code - How to fix it
