P0339 GMC Code - Crankshaft Position Sensor Circuit Intermittent
Quick Answer
The Crankshaft Position Sensor (CKP) also known as the crank position sensor is an electronic device used in an engine to record the rate at which the crankshaft is spinning. Common causes include Faulty crankshaft position sensor, Crankshaft position sensor harness is open or shorted, Crankshaft position sensor circuit poor electrical connection. 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 GMC indicates Crankshaft Position Sensor Circuit Intermittent.
- Common causes
- Common causes include Faulty crankshaft position sensor, Crankshaft position sensor harness is open or shorted, Crankshaft position sensor circuit poor electrical connection.
- 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.
Code P0339 GMC Description
When the engine is running, the high and low parts of the teeth cause the gap with the sensor to change. The changing gap causes the magnetic field near the sensor to change. The change in the magnetic field cause the voltage from the sensor to change.
What are the Possible Causes of the DTC P0339 GMC?
- Faulty crankshaft position sensor
- Crankshaft position sensor harness is open or shorted
- Crankshaft position sensor circuit poor electrical connection
- Signal plate may be damage
- Starter motor may be faulty
- Starting system circuit
- Dead or weak battery
How to Fix the DTC P0339 GMC?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0339 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0339 GMC Code
1. What are the common symptoms of OBDII code P0339 GMC (Crankshaft Position Sensor Circuit Intermittent)?
- Common symptoms include rough idling, stalling, engine misfires, difficulty starting the vehicle, and a decrease in fuel efficiency.
2. What are the possible causes of OBDII code P0339 GMC?
- The code P0339 GMC can be caused by a faulty crankshaft position sensor, damaged wiring or connectors related to the sensor, or issues with the sensor's alignment.
3. How can I diagnose the cause of OBDII code P0339 GMC?
- To diagnose the cause of the code, you can perform a visual inspection of the sensor and its wiring, use a multimeter to test the sensor's voltage and resistance, and check the sensor's alignment with the crankshaft.
4. Can a faulty crankshaft position sensor cause other issues besides triggering OBDII code P0339 GMC?
- Yes, a faulty crankshaft position sensor can cause a variety of issues such as poor engine performance, erratic engine timing, and even prevent the vehicle from starting.
5. How can I repair OBDII code P0339 GMC?
- Repairing the code involves replacing the faulty crankshaft position sensor, repairing or replacing damaged wiring or connectors, and ensuring proper alignment of the sensor.
6. Is it safe to continue driving with OBDII code P0339 GMC present?
- It is not recommended to continue driving with the code present, as it can lead to further engine problems and potential breakdowns.
7. Can a DIY enthusiast repair OBDII code P0339 GMC, or should I take it to a professional mechanic?
- While some DIY enthusiasts may have the skills to replace the crankshaft position sensor, it is recommended to consult a professional mechanic for accurate diagnosis and repair of the code.
8. How much does it typically cost to repair OBDII code P0339 GMC at a repair shop?
- The cost of repairing the code can vary depending on the labor rates and parts costs, but it typically ranges from $150 to $300 at a repair shop.
9. Are there any preventive measures to avoid OBDII code P0339 GMC in the future?
- Regular maintenance of the vehicle, including checking the condition of the crankshaft position sensor and its wiring, can help prevent the occurrence of the code in the future.
10. Can a weak battery or alternator cause OBDII code P0339 GMC to appear?
- Yes, a weak battery or alternator can cause voltage fluctuations that may trigger the code P0339 GMC. It is recommended to ensure the battery and charging system are in good condition when diagnosing this code.
Discuss the causes and fixes for P0339 GMC OBDII Code
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Hi, I need help on my 2000 GMC Safai van, I tryed many different machanic shops and no one can solve the problem, codes appear are: P0339, P1345, I replaced Crankshaft sensor, camshaft sensor, ignition coil, and distribuitor, airflow sensor... engine start, but once is running for a while start failing, this get worse with moisture (raining day), the incredible thing is, if I let the van by 24 hours parked, next time the car start and check engine desapear, any one had the same problem?, thank you very much. Erick
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