> CMP Sensor wiring and connector: perform a meticulous visual inspection of the Camshaft Position Sensor wiring and connectors. Repeat step 1 to check if the problem is solved. Clean the sensor with extreme care and re-install it on the vehicle. Look for oil, dirt and/or metal debris attached to its magnetic tip. Usually, the Camshaft Position Sensor is located on the valve cover, in this case, engine bank 2 cover.
> CMP condition: to inspect the CMP condition you will need to remove it from the vehicle. If the light lit during your driving cycle then continue with the diagnostic process.
In case the Check Engine Light stays off then you may have an intermittent problem.
Perform a driving cycle (at least 5-10 minutes). Read data trouble codes and take note of them. To discard a possible intermittent DTC condition, you’ll need to clear the ECU memory and complete a driving cycle. That said, let’s start the diagnostic process! Original manufacturer diagnostic procedures should always have precedence over a generic workflow. Dirty or clogged CMP sensor (oil, metal debris)įor the purpose of this article, it’s assumed that you have a basic knowledge of safety precautions while working on your vehicle.Īlways refer to the appropriate OEM literature when possible. CMP sensor connector (loosely, corroded, disconnected or bent pins). CMP sensor wiring (open, shorted, burnt). The most common causes of engine trouble code P0345 are: Noticeable engine hesitation during acceleration. Difficulty during engine start, in many cases even a no start condition. 7 Common Symptoms When Code P0345 is Present The P0345 code is triggered when the ECU detects a significative variation on the expected voltage pattern, or when the signal is intermittent. That way the ECU uses the wave pattern to identify each valve position and define the appropriate fuel/ignition timing. The cylinder #1 intake valve opening position is usually recognized by using a distinctive tooth normally wider than the rest. Technically speaking, the CMP is usually based on the Hall-Effect design consisting of a toothed wheel attached or part of the cam itself and a stationary electromagnet that also holds the Hall-Effect sensor.Īs the wheel rotates a voltage pattern is generated similar to a square wave. It’s job, is reporting, in real time, the position of the camshaft and thus the intake valve timing.ĭepending on the vehicle programming, the CMP information can be used by the Electronic Control Unit (ECU) to determine “when” it needs to trigger the corresponding fuel injector (intake valve opening) but also could be used in conjunction with the Crankshaft Position Sensor (CKP) to determine the spark timing.Īs you may guess, the CMP data is of great significance for a timely fuel/spark timing. The Camshaft Position Sensor is an important component for both the fuel delivery system and the ignition system. This code refers to engine bank 2, in other words, the bank not containing cylinder #1. The OBD2 data trouble code P0345 is stored in memory when the Electronic Control Unit (ECU) detects that the Camshaft Position Sensor (CMP) readings are outside the expected voltage range/pattern. Risks for the engine/driver: Medium Get your car checked out as soon as possible. Most common cause: Dirty or bad camshaft position sensor. P0345 Meaning: Camshaft Position Sensor is not working properly. P0345 Technical Definition: Camshaft Position Sensor A Circuit Malfunction (Bank 2).
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