Instead, you should test it using a multimeter.ĭepending on the model of your car, you might need to take some special diagnostic steps to detect and fix your particular issue. However, this doesn’t mean that you have to replace it. The P0340 code indicates that your car is experiencing a camshaft position sensor problem. As a result, your engine might behave erratically, which could eventually lead to an engine failure. If your CMP doesn’t measure the proper voltage, it will not provide the right signal to your PCM. It measures the rotational speed of your camshaft and sends the information to your PCM, which correlates it with the timing of the valves. It is also susceptible to failure in the harsh environment of an engine running.Ī camshaft position sensor, or CMP, is one of the most important components in your car’s electrical system. This is a sensor that controls a variety of engine parts, including fuel injection and the ignition system. If you notice that your engine stalls, stumbles, or chugs, you may have a problem with your crankshaft position sensor. However, there are a few things you can do to make your vehicle safer. The problem may be with your camshaft sensor, wiring or PCM. There are several reasons why your Ford F150 crankshaft position sensor “A” circuit might malfunction. P0340 Ford F150 Crankshaft position sensor “A” circuit malfunction A brand new Ford part can cost between $30 and $60, depending on the model. The cost to replace the camshaft position sensor on your Ford F150 depends on the brand and model of sensor you choose. Alternatively, you can use a repair shop to do the work. Using a DIY scan tool to connect to the ECM is a good way to find out if you need a replacement.

How to install camshaft synchronizer