![]() Examine the stability of the wiring and the connector.Īs with many OBDII codes, you won’t find the fix for this one in the service manual.Test the starter motor to see if it’s defective.Inspect the sensor’s electrical connector and wiring.Check the camshaft reluctor wheel for damage.You’ve already (hopefully) done this, so there are other things to look for. When you keep receiving codes, the first thing you should check is the camshaft sensor and have it replaced. ![]() If you don’t have much DIY automobile repair expertise, consider taking your car to a professional expert mechanic. You must investigate every possibility to identify the precise issue. Any price and availability information displayed on at the time of purchase will apply to the purchase of this product. Product prices and availability are accurate as of the date/time indicated and are subject to change. Prices pulled from the Amazon Product Advertising API on: Symptoms of the IssueĪ P0340 code in a car indicates the following symptoms: Sometimes, a defective starter motor can cause the P0340 code to be thrown. The starter motor is a small electric motor that’s used to start the engine. You can get a new sensor from your local auto parts store or online. If this is the case, it will need to be replaced. It’s also possible that the camshaft position sensor itself is defective. If this reluctor wheel is damaged, it can cause the P0340 code to be thrown. This, in turn, produces the electric signal that’s used by the ECM and PCM. The purpose of this reluctor is to pass by the teeth on the sensor, interrupting the magnetic field. The reluctor wheel refers to the notched wheel that’s attached to the camshaft. Damaged Camshaft Position Sensor Reluctor Wheel Damaged wires, loose connections, and bad grounds can all lead to this code being generated. If there’s a problem with the sensor’s electrical connector or wiring, it can cause the P0340 code to be thrown. The camshaft position sensor runs on electricity. But there are other potential causes as well, such as: Circuit Problems The most common reason for the P0340 error code is a problem with the camshaft position sensor itself. ![]() ![]() Also, if you ignore this camshaft position sensor fault for too long, it can even damage the engine, resulting in a more expensive repair procedure. If they continue to drive the car, they will lose power on the road. Because of the engine performance issues caused by this trouble, drivers may find it difficult or impossible to start the engine. The PCM will generate a P0340 code and turn on the Check Engine Light to notify the driver that something has gone wrong.Ī P0340 code represents terrible news for any car. The ECM is in charge of the ignition timing, while the PCM is used for fuel management and other engine control operations.ĭisrupting the signal from the camshaft position sensor can cause engine timing to be off, resulting in misfires and sub-optimal fuel-to-air mixtures. The Engine Control Module and Power-train Control Module or PCM are two such consumers of the sensor. Now, the camshaft sensor is used in a variety of different components within the automobile. If you didn’t already know, it’s also in charge of recording and synchronizing the engine’s speed and position as the camshaft turns. The camshaft sensor is the device that records and synchronizes the ignition and firing of the coils. Error Code Appears After Replacing the Camshaft Position Sensor Disconnecting the battery for 10 minutes or clearing the codes with the OBD2 scanner should solve the problem. The check engine light will stay on if there’s a problem with the wiring, camshaft position sensor reluctor wheel, or if the new camshaft position sensor is incompatible or has a factory defect. However, in some cases, the P0340 error code persists even though the camshaft sensor is new, which can be both frustrating and worrying. Replacing the camshaft position sensor is very easy, and all it takes is a couple of minutes and the basic mechanic tools. ![]()
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