← Back to Search Severity: Medium

P0347

P0347: Ignition System Misfire

Fix Cost
$100 - $500
Parts & Labor
Difficulty
3/5
Moderate
1-2 hours
DIY Possible?
✅ Yes
Save money
Category
Powertrain
System

📖 What Does P0347 Mean?

A misfire in one or more cylinders is detected, affecting combustion efficiency, which can cause decreased engine performance, rough idling, and decreased fuel efficiency.
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Symptoms

  • Rough idling
  • decreased engine performance
  • decreased fuel efficiency
  • engine misfires
  • decreased power
  • and decreased acceleration.
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Common Causes

  • Faulty spark plugs
  • ignition coils
  • spark plug wires
  • fuel injectors
  • or vacuum leaks.
Fix Guide
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Possible Solutions

1. Check and replace spark plugs if necessary. 2. Check and replace ignition coils if necessary. 3. Check and replace spark plug wires if necessary. 4. Check and clean or replace fuel injectors if necessary. 5. Check for vacuum leaks and repair if necessary.

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Common Questions About P0347

Q

Can I drive with code P0347?

A

You can drive for a short time, but should address code P0347 soon to avoid worsening the problem or failing an emissions test.

Q

How much does it cost to fix P0347?

A

The estimated repair cost for code P0347 is between $100 and $500. This includes parts and labor for most makes and models.

Q

Is this code easy to fix myself?

A

This repair is considered moderate. It may require specialized tools or significant disassembly. Professional help is recommended if you aren't an experienced DIYer.

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Complex codes like P0347 can be tricky. Don't risk it if you're unsure.

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Related Diagnostic Codes

Other codes that may appear with P0347

💡 Why These Codes Are Related:

  • Similar Issues: Same root cause or component failure
  • Related Problems: Often occur together due to system interactions
  • Sequential Codes: Progressive failure stages or multiple sensors
  • Same System: Components within the same automotive system