Definition of the code P0345
The P0345 code indicates that the car computer has detected an incorrect voltage reading from the camshaft position sensor in seat 2.
What does the P0345 code mean
In order to ensure proper engine timing and correct fuel delivery according to driving conditions, the car’s computer needs information about the camshaft position and speed. This is done using a stationary solenoid (camshaft position sensor) in conjunction with the teeth on the shaft. When the teeth move in front of the sensor, the signal is blocked, creating a pattern. This pattern is sent to the car’s computer and is used to help determine engine timing and fuel delivery. If it is incorrect, the car computer will set a P0345 code.
What causes the P0345 code?
There are several potential causes of the P0345 code. These include the following:
- Contamination of the sensor by engine oil or transmission fluid.
- Broken teeth
- Damage to the wiring harness
- Corroded or loose connections
- Damage to camshaft position sensor A (usually due to fluid contamination)
- Crankshaft position sensor failure
- PCM failure (rare)
What are the symptoms of the P0345 code?
You may experience one or more of several different symptoms with the P0345 code. These include the following:
- Does not start
- Reduced engine performance
- Delayed engine starting (slow starting)
- Difficult idle speed
- Light acceleration
How can a mechanic diagnose the P0345 code?
To diagnose the underlying problem, the mechanic will first read the codes stored in the car’s computer using an OBD II scanner. He will then erase these codes and test the vehicle (unless there is a no-start condition). The technician will check to see if the codes have been reset and may duplicate the driver’s complaints.
Next, the mechanic should check the crankshaft position sensor circuit, including wiring and connections. Again, contact with engine oil or transmission fluid can cause deterioration and damage. Any damaged wires should be repaired or replaced, and any loose or corroded connections should be repaired.
If this does not solve the problem, the mechanic will need to check the crankshaft position sensor itself. Fluid contamination can cause these sensors to fail, and if they are coated with oil or transmission fluid, the sensor will need to be replaced.
The most common errors when diagnosing the P0345 code.
One of the most common mistakes made is replacing the camshaft position sensor when the problem is actually in the circuit. Again, the quality of the replacement part is important in this area. Mechanics should use OEM quality camshaft position sensor replacements.
How serious is the P0345 code?
The P0345 code is indeed very serious, as it can lead to no-start situations that can leave you stranded. Even in the best case scenario, you will experience reduced performance and fuel mileage. It is very important to diagnose the problem immediately and correct it properly.
What fixes can repair a P0345 code?
- The actual repairs will vary depending on the cause of the code. However, they include the following:
- Replacement of the crankshaft position sensor.
- Repair or replacement of damaged cables
- Repair of loose connections
- Identification and repair of fluid leaks
Additional comments to consider in relation to code P0345
It is very important that mechanics understand that although crankshaft position sensors fail, the real problem is more related to the wiring harness or connections. These should be checked before replacing the sensor, so that the customer does not pay for a repair that does not fix the problem. It is also strongly recommended to identify and repair fluid leaks that are damaging the sensor circuit.
