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P0345 OBD2: Camshaft Position Sensor "A" Circuit

P0345 OBD2: Camshaft Position Sensor “A” Circuit

The P0345 OBD-II code indicates an issue with the Camshaft Position Sensor “A” Circuit. This vital component measures the rotational position of the camshaft, which is essential for the effective operation of your engine. The information from this sensor is crucial for the engine control module (PCM) to manage fuel injectors and ignition timing properly.

What Does the P0345 Code Mean?

When the PCM detects an irregular signal or no signal from the Camshaft Position Sensor, it triggers the P0345 code. This means that the engine is not receiving the correct information needed for optimal performance, which can lead to various engine issues.

What Causes the P0345 Code?

Several factors can lead to the P0345 code, including:

  • Broken tone ring
  • Camshaft Position Sensor (CMP) failure
  • Powertrain Control Module (PCM) failure
  • Wiring issues

What Are the Symptoms of the P0345 Code?

Common symptoms associated with the P0345 code include:

  • Decreased engine performance
  • Engine may not start
  • Increased fuel consumption

How Serious Is the P0345 Code?

The P0345 code is considered urgent. It indicates a significant malfunction that can lead to severe engine damage if not addressed promptly. Ignoring this code can also pose safety risks to the driver and passengers.

How to Diagnose the P0345 Code

Diagnosing the P0345 code should include the following steps:

  1. Use an OBD-II scanner to confirm the P0345 code and check for any additional codes.
  2. Inspect the wiring and connectors associated with the Camshaft Position Sensor for damage or corrosion.
  3. Check the Camshaft Position Sensor and tone ring for proper function.
  4. Test the Powertrain Control Module (PCM) to rule out any failures.

Common Repairs for the P0345 Code

Common repairs needed to fix the P0345 code include:

  • Replacing the Camshaft Position Sensor
  • Repairing or replacing damaged wiring or connectors
  • Replacing the tone ring, if broken
  • Addressing any PCM-related issues

How Much Does It Cost to Fix the P0345 Code?

The cost to fix the P0345 code can vary widely based on the root cause. Replacing a Camshaft Position Sensor typically ranges from $100 to $300, including parts and labor. Additional costs may arise if wiring repairs or PCM replacements are necessary.

Can I Fix the P0345 Code Myself?

While you can attempt to diagnose and replace the Camshaft Position Sensor yourself, it is essential to ensure you understand the underlying issues related to the code. Misdiagnosis can lead to further problems and expenses. If you are not confident in your ability to accurately diagnose and repair the issue, it is advisable to seek professional help.

About JC Landry

JC is the Senior Editor at eManualOnline.com, GarageSpot.com, and Drive-My.com, as well as the Webmaster of TheMechanicDoctor.com, only to name a few. He's been a certified Master Mechanic for 15 years, working for various car dealers and specialized repair shops before turning towards blogging about cars and EVs in the hope of helping the next generation of automotive technicians. He also loves cats, Johnny Cash and Subarus.

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