Error Code P0343 is defined as Camshaft Position Sensor “A” Circuit High Input. Meaning, the problem refers to the camshaft position sensor, which has been fouled from the combination of oil and moisture, causing bad ground or voltage.
This code is a generic trouble code, meaning it applies to all cars made since 2003. It is more common among particular makes, such as Chevrolet, Ford, Hyundai, Kia, Toyota, and VW cars. Some cars makes however, can still have this code. Specifications on the definition, troubleshooting and repairs vary from one make and/or model to another.
Error Code P0343 refers to a voltage problem with the CMP or camshaft position sensor. This sensor is a fixed electromagnetic sensor connected to the rotating part of the camshaft, which works by recording the position of the “teeth” to indicate the stroke of the pistons, giving the computer of your 2012 Chevrolet Colorado 2wd-extended-cab or PCM (powertrain control module, also called as ECM or engine control module in other makes) the information to appropriate the right fuel and spark for the engine.
The position of the camshaft makes various gaps between the sensor, and this change in magnetic field changes the voltage from the sensor.
Error Code P0343 is set when the voltage detected is not within the parameters set by the manufacturer, and it applies to the Bank 1 sensor that monitors the cylinder # 1.
A defective CMP sensor can cause the PCM to provide incorrect amount of fuel and spark, leading to various drivability conditions, such as inconsistent starting issues and stalling. Other common symptoms for Error Code P0343 are:
There are many reasons for a 2012 Chevrolet Colorado 2wd-extended-cab to register this code. Some of the most common possible causes include:
Other causes include:
Mechanics start their diagnosis for their error code through a thorough visual inspection of the sensor and determine whether or not it is being fouled due to an oil leak, damaged or frayed wiring.
Note that, sensors can be cleaned to work back to normal. Technicians usually use electrical contact cleaner or even rubbing alcohol to clean these components and clear the codes.
If the code comes back, then there’s a good chance that the problem is in the sensor itself. To be sure about this, you can use a multimeter and a test light to test whether the sensor is getting the voltage supply it needs to function properly. If it does not get the voltage it needs, then the mechanics will replace the sensor with a high-quality replacement part. The codes are then cleared and your 2012 Chevrolet Colorado 2wd-extended-cab will be taken to a test drive to ensure the new sensor works properly and the code doesn’t come back.
Some of the most common fixes for this code include:
CMP sensors are crucial for modern 2012 Chevrolet Colorado 2wd-extended-cab’s fuel injection. Error Code P0343 must be addressed quickly, as it affects the driving quality of your 2012 Chevrolet Colorado 2wd-extended-cab
Also, this error usually involves bad replacement sensors. It is imperative that one should use high quality replacements to avoid the hassles and inconvenience of the problem.