P0339 code — how to fix error fast

Most of the issues with modern-day vehicles can be shown through the error codes like the P0339 code, and this means you have to take immediate action, especially if it’s a code related to the engine. Sadly, if you face this one, it has quite a bit to do with your engine’s timing cycle and it’s therefore essential to uncover the P0339 code meaning and deal with the situation in the best way possible.

We know, it’s easier said than done, and that’s exactly why we’ll be there every step of the way to help you out. This guide will be your window into the code P0339, its meaning, and the issues it may come with. After that, our team will one more time go through the causes of the issue, and possible solutions you can apply, so let’s do it.

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What does the P0339 code mean?

The P0339 code indicates that there is a problem with the crankshaft position sensor’s signal. The sensor is responsible for monitoring the crankshaft’s rotation speed and position, which is crucial for the engine’s proper functioning. If the sensor is not working correctly, the engine may not start or may stall while driving.

You should take the P0339 code seriously and address the issue promptly. Ignoring the code may lead to more severe problems with the engine, such as decreased performance, reduced fuel efficiency, or engine damage.

What causes the P0339 code?

While the appearance of the code can mean that there’s an issue with the crankshaft position sensor or its signal, there are several possible root causes of the issue. So, it’s not safe to simply assume that the sensor needs replacing and hope it will solve the issue.

To give you a better perspective, we’ll make sure to give you an overview of each possible reason behind the code:

Faulty crankshaft position sensor

The most common cause of the P0339 code is a faulty crankshaft position sensor. The sensor may be damaged or worn out, leading to incorrect or no signals being sent to the engine control module (ECM). Symptoms of a faulty sensor include engine misfires, stalling, and difficulty starting the engine.

Damaged or loose wiring

If the wiring that connects the sensor to the ECM is damaged or loose, the sensor may not function correctly. This can result in the P0339 code being triggered. Symptoms of damaged wiring include intermittent stalling or engine hesitation.

Failed ECM

In rare cases, a failed ECM can cause the P0339 code. This occurs when the ECM is not receiving the proper signal from the sensor due to internal damage or malfunction.

Which car models does the P0339 code affect the most?

While the code may appear in almost any car model out there, we’ve found some reports of car models that are more susceptible to damage caused by the reasons behind this code:

• Honda Civic: While this vehicle is known for its reliability and fuel efficiency, some models have been known to experience issues with the crankshaft position sensor circuit. This can cause the P0339 code to be triggered and may lead to stalling or other performance issues.
• Subaru Impreza: This vehicle is known for its all-wheel-drive system and sporty handling, but some models have also experienced issues with the crankshaft position sensor circuit. This can cause the P0339 code to be triggered and may lead to difficulty starting or stalling while driving.
• Ford Focus: This vehicle is known for its fuel efficiency and practicality, but some models have also experienced issues with the crankshaft position sensor circuit. This can cause the P0339 code to be triggered and may lead to issues with engine performance and fuel efficiency.
• Dodge RAM: Some model years of the Dodge RAM have also faced issues with the failing crankshaft position sensor circuit which is why we had to enlist it as one of the models that are more prone to this code.

How to diagnose the P0339 code

Diagnosing the P0339 code requires specialized tools and expertise. Here are the steps a mechanic may take to diagnose the code:

Use a scan tool

The mechanic will use a scan tool to read the code and determine the issue’s severity. The scan tool will provide information on the code’s cause, such as a faulty sensor or damaged wiring.

Inspect the sensor and wiring

The mechanic will inspect the sensor and wiring for any visible damage or wear. They may also test the sensor’s resistance to determine if it’s functioning correctly.

Perform a signal test

If the sensor and wiring appear to be in good condition, the mechanic may perform a signal test to determine if the sensor is sending the proper signal to the ECM.

How to fix the P0339 code

Once you’ve figured out what’s causing the code P0339, solving gets much easier as you can repair or replace the issue that has caused the trouble in the first place. Here’s what it looks like depending on the reason behind the code:

Replace a faulty crankshaft position sensor

If the sensor is faulty, it will need to be replaced. The cost of the replacement will depend on the car model and the mechanic’s labor rates.

Damaged or loose wiring

If the wiring is damaged, it may need to be replaced. If it’s loose, it may be tightened or secured. The cost of the repair will depend on the extent of the damage and the labor rates.

Failed ECM

If the ECM has failed, it will need to be replaced. This is a rare occurrence and may be covered under the car’s warranty.

It’s important to address the P0339 code promptly to prevent further damage to the engine. If a driver is unsure how to fix the issue, they should seek professional help.

How to prevent the P0339 code

Preventing the P0339 code requires routine maintenance and care for the car’s engine. Here are some tips for preventing the code:

• Follow the manufacturer’s recommended maintenance schedule for the car.
• Keep the engine clean and free of debris.
• Avoid driving on rough roads or in hazardous conditions.
• Be mindful of any changes in the engine’s performance and address them promptly.

By following these tips, drivers can reduce the risk of the P0339 code appearing and keep their engine running smoothly.

Our take

Overall, the crankshaft position sensor and its circuits are components that are pretty simple and affordable to replace, yet they can cause quite a ruckus in your engine’s operation if left unattended. So, we hope this guide will suffice in helping you deal with the bothersome P0339 code and preventing it from appearing again in your car.