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Engine-Codes – Generic – P0339

P0339 Code - Crankshaft Position Sensor 'A' Circuit Intermittent

Quick Answer

The P0339 code indicates that there is an intermittent issue with the Crankshaft Position Sensor (CPS) 'A' circuit. Common causes include Faulty crankshaft position sensor, Loose or corroded wiring connections in the CPS circuit, Damaged CPS wiring harness. 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
P0339 indicates Crankshaft Position Sensor 'A' Circuit Intermittent.
Common causes
Common causes include Faulty crankshaft position sensor, Loose or corroded wiring connections in the CPS circuit, Damaged CPS wiring harness.
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 06, 2024
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Code P0339 Description

The P0339 code indicates that there is an intermittent issue with the Crankshaft Position Sensor (CPS) 'A' circuit. The crankshaft position sensor is a vital component in the engine management system, as it monitors the position and rotational speed of the crankshaft. This information is crucial for the engine control unit (ECU) to accurately determine ignition timing and fuel injection. An intermittent fault in the CPS circuit can lead to a variety of performance issues and potentially cause the engine to stall or misfire.

OBDII Code P0339 - Crankshaft Position Sensor 'A' Circuit Intermittent
P0339 Code - Crankshaft Position Sensor 'A' Circuit Intermittent

Common Causes of P0339

  1. Faulty crankshaft position sensor
  2. Loose or corroded wiring connections in the CPS circuit
  3. Damaged CPS wiring harness
  4. Engine overheating leading to sensor malfunction
  5. Electronic control module (ECM) issues

Symptoms of P0339

  1. Engine misfires or stalling
  2. Rough idling or hesitation during acceleration
  3. Decreased fuel efficiency
  4. Difficulty starting the engine
  5. Illuminated check engine light

How to Fix P0339

  1. Diagnose the issue by using a diagnostic scanner to read the fault codes and perform a visual inspection of the CPS and its wiring.
  2. Check for loose or corroded connections in the CPS circuit and repair or replace as necessary.
  3. Test the CPS using a multimeter to ensure it is functioning correctly. Replace the sensor if it is faulty.
  4. Inspect the CPS wiring harness for damage and repair or replace as needed.
  5. Clear the fault codes from the ECU memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0339

The cost of repairing a P0339 code can vary depending on the cause of the issue and the make and model of the vehicle. In general, the cost of replacing a crankshaft position sensor can range from $50 to $200, while labor costs can add an additional $100 to $200. Overall, the total repair cost for addressing a P0339 code may be in the range of $150 to $400. It is recommended to consult with a certified mechanic or auto repair shop to get an accurate estimate based on the specific circumstances of your vehicle.

What does this mean?

Tech Notes for P0339

Sometimes and in some models, low battery voltage or a weak starter can trigger a Crankshaft Position Sensor code. Before replacing any parts, recharge or replace the battery.





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When is the Code Detected?

The crankshaft position sensor (POS) signal sent to the Electronic Control Module (ECM) is high

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Code P0339 Information for Specific Makes

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 P0339 Code

1. What are the common symptoms of OBDII code P0339 (Crankshaft Position Sensor 'A' Circuit Intermittent)?

- Common symptoms include rough idling, engine stalling, difficulty starting the engine, and a decrease in fuel efficiency.

2. What are the possible causes of OBDII code P0339?

- The code can be triggered by a faulty crankshaft position sensor, damaged wiring or connectors related to the sensor, or issues with the sensor circuit.

3. How can I diagnose the cause of OBDII code P0339?

- A thorough diagnostic process involves checking the crankshaft position sensor's wiring and connectors for damage, testing the sensor's functionality, and inspecting the sensor circuit for any faults.

4. Can a faulty crankshaft position sensor cause OBDII code P0339?

- Yes, a malfunctioning or failing crankshaft position sensor is a common cause of triggering code P0339.

5. What are some repair tips for addressing OBDII code P0339?

- Repair tips include replacing the crankshaft position sensor if faulty, repairing or replacing damaged wiring/connectors, and ensuring the sensor circuit is functioning properly.

6. How urgent is it to address OBDII code P0339?

- While your vehicle may still be operational with this code, it is recommended to address it promptly to prevent potential issues such as engine stalling or poor performance.

7. Can I drive my vehicle with OBDII code P0339?

- It is generally not recommended to drive your vehicle with this code present, as it can lead to engine performance issues and potential safety hazards.

8. How much does it typically cost to repair OBDII code P0339?

- The cost of repairing this code can vary depending on the cause of the issue, but it typically ranges from $100 to $300 for parts and labor.

9. Will resetting the OBDII system clear code P0339?

- Resetting the OBDII system may temporarily clear the code, but it will likely reappear if the underlying issue causing P0339 is not addressed.

10. Can a DIY enthusiast fix OBDII code P0339 at home?

- While diagnosing and repairing this code may be challenging for DIY enthusiasts, it is possible with the right tools, knowledge, and expertise in automotive repair.

Discuss the causes and fixes for P0339 OBDII Code

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  • im getting a message on my 02 Denali that says reduced engine power . it will only get up to 1500 rpm and only go 20 mph. any ideas?????

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  • What is the solution I changed the battery from a short period and return the same problem

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  • What model and year is your vehicle? since you got the P0339 code, it possible that you need to replace the Crankshaft Position Sensor.

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  • I got volvo s40 1.6D its 2007 i got the same code and it has lack power 2000rpm but i can drive it 60km/h below 2000rpm then i can get it coughing shaking past 2000rpm and its normal i can go as fast car go but in netrual when rev it goes 2000rpm it sound choking then sometimes you can hear like small knock but i checked everything and it had recently changed sensors before i bought it by volvo mechanics but think they f something up as there was peace light metal bent up around cranck sensor but it works im scared think it might be the ECM but hope its not expensive replace :/

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