Troubleshooting Dodge Charger P0340 Error Code

How to Fix the P0340 Error Code in Your Dodge Charger

Encountering a P0340 error code in your Dodge Charger can be worrying, but with the right information and tools, you can diagnose and potentially resolve the issue yourself. This code indicates a problem with the Camshaft Position Sensor (CMP) circuit, which plays a crucial role in engine management. Below, we'll guide you through understanding, diagnosing, and fixing the P0340 error code.

Understanding the P0340 Error Code

The P0340 error code is a generic trouble code that applies to all models of vehicles, including the Dodge Charger. It specifically points to a malfunction in the camshaft position sensor circuit. This sensor helps regulate the timing of your engine's camshaft, influencing how well your engine runs.

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Symptoms of a P0340 Code

  • Engine misfires
  • Poor idling
  • Difficulty starting the car
  • Decrease in engine performance
  • Possible stalling

Diagnosing the P0340 Error Code

To accurately diagnose this issue, follow these steps:

1. Visual Inspection

  • Check the wiring and connectors leading to the camshaft position sensor for any signs of damage or loose connections.
  • Inspect the sensor itself for cracks or wear.

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2. Use an OBD-II Scanner

  • Connect an OBD-II scanner to your car’s diagnostic port.
  • Check for any additional codes that might indicate other issues.

3. Test the Sensor

  • Use a multimeter to check the sensor’s voltage and resistance.
  • Compare your findings with the specifications in your Dodge Charger’s service manual.

4. Check the Timing Belt/Chain

  • Ensure that the timing belt or chain is in good condition and properly aligned, as misalignment can trigger this error code.

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Fixing the P0340 Error Code

1. Replace the Camshaft Position Sensor

  • If the sensor is faulty, replacing it is usually straightforward and can be done with basic tools.
  • Example: Disconnect the battery, remove the sensor’s retaining bolt, unplug the sensor, and install the new one.

2. Repair Wiring Issues

  • If you find damaged wires or connectors, repair or replace them to ensure solid connections.

3. Reset the Error Code

  • After repairs, use the OBD-II scanner to clear the error code.
  • Start the engine to see if the code reappears.

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When to Seek Professional Help

If you’ve performed these steps and the problem persists, or if you’re not comfortable tackling this on your own, it might be time to consult with a professional. At Mavyn, you can chat with our AI, Mavyn GPT, for additional guidance or connect directly with a human expert specialized in Dodge Charger repairs.


The P0340 error code in your Dodge Charger can often be resolved with some basic troubleshooting. However, understanding the role of the camshaft position sensor and ensuring it functions correctly is crucial for your vehicle's performance. If you need further assistance, don't hesitate to reach out to Mavyn for expert advice tailored to your specific situation.

Remember, maintaining your vehicle not only extends its life but also ensures your safety on the road. Happy troubleshooting!