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P0339 OBD2: Crankshaft Position Sensor "A" Circuit Intermittent

P0339 OBD2: Crankshaft Position Sensor “A” Circuit Intermittent

What Does the P0339 Code Mean?

The OBD-II code P0339 is defined as a Crankshaft Position Sensor “A” Circuit Intermittent. This code is triggered when the Powertrain Control Module (PCM) detects an irregular signal or no signal at all from the crankshaft position sensor.

What Causes the P0339 Code?

Several factors can lead to the P0339 code being set, including:

  • Broken tone ring
  • Crankshaft Position Sensor (CKP) failure
  • Powertrain Control Module (PCM) failure
  • Wiring issues

What Are the Symptoms of the P0339 Code?

Common symptoms associated with the P0339 code include:

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

How Serious Is the P0339 Code?

The P0339 code is categorized as urgent. It indicates that immediate action is necessary, as it can lead to severe damage to the vehicle or pose safety risks to the driver and passengers.

How to Diagnose the P0339 Code

Diagnosing the P0339 code involves a systematic approach, including:

  • Using an OBD-II scanner to confirm the presence of the code.
  • Inspecting the crankshaft position sensor and its wiring for visible damage.
  • Checking the tone ring for any breaks or misalignment.
  • Testing the crankshaft position sensor with a multimeter.
  • Verifying the functionality of the PCM if other components are functioning correctly.

Common Repairs for the P0339 Code

Repairs for the P0339 code may involve:

  • Replacing the crankshaft position sensor.
  • Repairing or replacing damaged wiring.
  • Replacing the tone ring if broken.
  • Addressing any PCM issues if identified.

How Much Does It Cost to Fix the P0339 Code?

The cost to fix the P0339 code can vary depending on the specific issue. Typically, replacing the crankshaft position sensor may range from $100 to $300, including parts and labor. Additional repairs may increase the total cost.

Can I Fix the P0339 Code Myself?

If you have experience with automotive repairs and access to the necessary tools, you may be able to fix the P0339 code yourself. However, it’s crucial to conduct a comprehensive diagnosis to ensure that you address the root cause of the problem rather than just replacing parts.

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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