Q: code 340 sensor camshaft

asked by on

took to first mechanic and he asked me did I want to keep this car suggested about $800 cost to service. 2nd mechanic said, possible $1200 be be repaired. It sounded like both were really not completely sure, of what exactly the problem is. Got same codes but both sounded a little of sure about replacing the sensor camshaft. Car is not stalling or running rough, but engine light is on. My warranty is up. Could this possibily be a problem for car with only 70,000 miles. Could be a faulty problem, and how would i find out from mercedes on it's 2012 250C?

My car has 69000 miles.
My car has an automatic transmission.

Hi there. If the error code they gave you was P-0340, this indicates that the problem is with the camshaft position sensor. The camshaft position sensor calculates the rotational speed of the camshaft and where the camshaft is positioned in that rotation. The camshaft sensor sends a signal to the Power Control Module (PCM) to communicate this information. The PCM then uses the information collected by the camshaft position sensor to set the fuel injector timing and control the ignition spark. When the signal to and from the camshaft position sensor and the PCM is broken, the ignition spark and fuel injector timing will fail and the PCM will store the P0340. This will trigger the illumination of the Check Engine Light. This should not be a very costly replacement, so I would recommend getting a third opinion to replace the camshaft position sensor by having one of our mobile mechanics complete this for you.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. code 340 sensor camshaft

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Reocurring wheel speed sensor failure

Hey there. As you may know, these sensors monitor wheel speed for a variety of the car's onboard systems such as the traction control, ABS, and other systems. When wheel speed sensors go bad, they can cause many problems with...

Q: Where are the jack and the emergency tools located?

All of the emergency tools, and the jack, are located under the front passenger seat. To access the emergency tools, use your hands to remove the plastic cover at the base of the passenger seat. Then, pull out the jack...

Q: Cold weather starting problem

As a general rule, car engines do not like cold weather and do not do operate as well in cold weather. When you start your car in the morning and turn the key to on, the coolant temperature sensor immediately...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.