P0339 Ford Code - Crankshaft Position Sensor 'A' Circuit Intermittent
Quick Answer
The Crankshaft position sensor, 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 Ford indicates Crankshaft Position Sensor 'A' 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 Ford 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 causes the voltage from the sensor to change.
What are the Possible Causes of the DTC P0339 Ford?
- Faulty crankshaft position sensor
- Crankshaft position sensor harness is open or shorted
- Crankshaft position sensor circuit poor electrical connection
- Signal plate may be damaged
- Starter motor may be faulty
- Starting system circuit
- Dead or weak battery
How to Fix the DTC P0339 Ford?
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.
Code Tech Notes
User Submitted Video
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0339 Ford 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 Ford Code
1. What are the common symptoms of OBDII code P0339 in a Ford vehicle?
- Common symptoms include engine stalling or hesitation, rough idling, difficulty starting the engine, and a noticeable decrease in fuel efficiency.
2. What are the possible causes of OBDII code P0339 in a Ford vehicle?
- The code P0339 is often triggered by a faulty crankshaft position sensor, wiring issues in the circuit, a damaged sensor connector, or a problem with the sensor's reluctor ring.
3. How does a faulty crankshaft position sensor affect the engine's performance?
- A faulty crankshaft position sensor can lead to misfiring, incorrect ignition timing, and in severe cases, engine failure. It is crucial for proper engine operation.
4. Can a DIY enthusiast repair OBDII code P0339 in a Ford vehicle?
- While some may attempt the repair, it is recommended to have a professional diagnose and repair the issue due to the complexity of the sensor's location and the sensitivity of the electrical components involved.
5. How important is it to address OBDII code P0339 promptly?
- It is crucial to address code P0339 promptly to prevent further damage to the engine and ensure optimal vehicle performance and fuel efficiency.
6. Are there any preventative measures to avoid OBDII code P0339 in a Ford vehicle?
- Regular vehicle maintenance, including checking the condition of the crankshaft position sensor and its wiring, can help prevent the occurrence of code P0339.
7. Can a faulty crankshaft position sensor cause other codes to appear in a Ford vehicle?
- Yes, a malfunctioning crankshaft position sensor can cause other related codes to appear, such as P0335 (Crankshaft Position Sensor 'A' Circuit) or P0340 (Camshaft Position Sensor 'A' Circuit Malfunction).
8. How can a professional diagnose OBDII code P0339 in a Ford vehicle?
- A professional technician can use a scan tool to read the code, perform a visual inspection of the sensor and its wiring, conduct voltage tests, and check the sensor's signal output for proper operation.
9. Is it safe to continue driving with OBDII code P0339 present in a Ford vehicle?
- Driving with code P0339 present can be risky, as it may lead to engine performance issues or potential engine damage. It is best to have the issue diagnosed and repaired promptly.
10. Can extreme weather conditions affect the crankshaft position sensor and trigger code P0339?
- Yes, extreme temperatures or moisture can affect the sensor's performance, potentially leading to code P0339. Ensuring proper sealing and protection of the sensor can help prevent such issues.
Discuss the causes and fixes for P0339 Ford OBDII Code
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I have a 2017 mustang gt and got this code 3 times in the first year I had it. When I took my car in to ford they said they cannot look into anything that isn’t currently showing up on the dashboard (wtf?) Basically saying something has to appear while they look at the vehicle. If any service soon or error or any issue happens intermittently, at random or goes on and off if that issue or fault or dash light isn’t on when u bring the car in there is nothing they can do. Anyways since then I’ve had to jump start my car cuz the battery is deAd every other time I shut it off. I’ve had to jumpstart 11 times one day alone. Plus my passenger tail light went out and the led had to be replaced. When they did that I told them about the battery they claimed to have checked it out and it was fine yet when I picked up my car they had to jumpstart it cuz the battery was dead AND also my driver side led tail was now out. Over the past couple days things went haywire. I now get steering assist fault all the time and the car drives weird and randomly on the dash I’ll get the service soon, advancetrac traction control off, airbag light, parking brake light (even when the brake is not engaged) abs light, and I can’t hit ok to clear it and use any of the functions, and the electronic dash will say back up collision sensor (forget what it specifically called it) is either in error or needs to be checked then on my ford sync touch screen I get a 911 error and a navigation error, the voice button on the steering wheel won’t work, the steering modes won’t work, and the driving modes won’t work. On top of the the crankshaft sensor code P 0339 is back
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Have 2019 Ford Flex. Engine light on, got code Po339.
My question is, can I still drive? Funds? -
I wouldn't recommend continuing to drive your vehicle. The problem is that without the signal from the Crankshaft Position Sensor the engine could stall while driving. You should call your local Ford dealer; it may still be covered under warranty.
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