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P2347 Dodge Code - Cylinder 12 Above Knock Threshold

Quick Answer

The P2347 diagnostic trouble code (DTC) for Dodge vehicles indicates that Cylinder 12 is operating above the knock threshold. Common causes include Use of low-quality fuel or incorrect octane rating, Carbon buildup on piston or cylinder head, Faulty ignition timing. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P2347 Dodge indicates Cylinder 12 Above Knock Threshold.
Common causes
Common causes include Use of low-quality fuel or incorrect octane rating, Carbon buildup on piston or cylinder head, Faulty ignition timing.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code P2347 Dodge Description

The P2347 diagnostic trouble code (DTC) for Dodge vehicles indicates that Cylinder 12 is operating above the knock threshold. This means that the engine's control module has detected abnormal combustion in Cylinder 12, which can lead to knocking or pinging noises. Knocking occurs when the air-fuel mixture in the cylinder ignites at the wrong time, causing vibrations and potential damage to the engine.

OBDII Code P2347 Dodge - Cylinder 12 Above Knock Threshold
P2347 Dodge Code - Cylinder 12 Above Knock Threshold

Common Causes of P2347 Dodge

  1. Use of low-quality fuel or incorrect octane rating
  2. Carbon buildup on piston or cylinder head
  3. Faulty ignition timing
  4. Malfunctioning knock sensor
  5. Engine overheating

Symptoms of P2347 Dodge

  1. Engine knocking or pinging noises
  2. Reduced engine performance
  3. Decreased fuel efficiency
  4. Illumination of the check engine light

How to Fix P2347 Dodge

  1. Check and replace spark plugs and ignition coils if necessary
  2. Inspect and clean carbon buildup from pistons and cylinder heads
  3. Verify fuel octane rating and use premium fuel if required
  4. Test and potentially replace the knock sensor
  5. Perform a thorough inspection of the engine for any other potential issues contributing to abnormal combustion

Cost to Fix P2347 Dodge

The cost to repair the P2347 code for Cylinder 12 above the knock threshold can vary depending on the specific cause of the issue. On average, parts and labor for this repair can range from $200 to $500. However, it's important to note that diagnostic time and labor rates can vary between auto repair shops. It is recommended to consult with local shops to get a more accurate estimate based on your vehicle's make and model.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2347 Dodge Code

1. What are the common symptoms of OBDII code P2347 in a Dodge, indicating Cylinder 12 Above Knock Threshold?

- Common symptoms include engine knocking or pinging noises, reduced engine performance, and potentially rough idling or misfires.

2. What are the possible causes of OBDII code P2347 in a Dodge, related to Cylinder 12 Above Knock Threshold?

- The code may be triggered by issues such as a faulty knock sensor, engine mechanical problems, incorrect ignition timing, or a malfunctioning sensor or control module.

3. How can I diagnose OBDII code P2347 in my Dodge to pinpoint the issue with Cylinder 12 Above Knock Threshold?

- To diagnose the problem, you may need to perform a thorough inspection of the knock sensor, check for any wiring or connection issues, and conduct a comprehensive engine performance test.

4. Are there any DIY repair tips for resolving OBDII code P2347 in a Dodge, specifically related to Cylinder 12 Above Knock Threshold?

- DIY repair tips may include checking and replacing the knock sensor, inspecting and repairing any damaged wiring, ensuring proper ignition timing, and resetting the fault codes after repairs.

5. Can driving with OBDII code P2347 present in a Dodge, signaling Cylinder 12 Above Knock Threshold, cause further damage?

- Continuing to drive with this code present may lead to increased engine knocking, reduced fuel efficiency, and potentially more severe engine damage over time, so it is advisable to address the issue promptly.

6. Is it safe to clear the OBDII code P2347 in a Dodge without addressing the underlying problem of Cylinder 12 Above Knock Threshold?

- Clearing the code without fixing the root cause may temporarily turn off the check engine light, but it will not solve the underlying issue causing Cylinder 12 Above Knock Threshold and may result in the code reappearing.

7. How much can I expect to pay to repair OBDII code P2347 in a Dodge, indicating Cylinder 12 Above Knock Threshold?

- The cost of repair can vary depending on the specific cause of the issue, but it may range from a few hundred dollars for a basic sensor replacement to more significant costs for complex mechanical repairs.

8. Are there any recalls or technical service bulletins related to OBDII code P2347 in Dodge vehicles with Cylinder 12 Above Knock Threshold?

- It's recommended to check with a Dodge dealership or the manufacturer's website for any relevant recalls or technical service bulletins related to this specific OBDII code and associated symptoms.

9. Will OBDII code P2347 in a Dodge, highlighting Cylinder 12 Above Knock Threshold, affect the vehicle's emissions or cause it to fail an emissions test?

- Yes, this code may impact emissions and cause the vehicle to fail an emissions test due to increased engine knocking and potential issues with combustion efficiency.

10. How can preventive maintenance help avoid triggering OBDII code P2347 in a Dodge, indicating Cylinder 12 Above Knock Threshold?

- Regular maintenance, including timely spark plug replacements, checking and replacing sensors as needed, and ensuring proper engine tune-ups, can help prevent issues leading to this specific OBDII code.

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