P0338 Ford Code - Crankshaft Position Sensor 'A' Circuit High
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
- P0338 Ford indicates Crankshaft Position Sensor 'A' Circuit High.
- 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 P0338 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 cause the voltage from the sensor to change.
What are the Possible Causes of the DTC P0338 Ford?
- 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 P0338 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
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0338 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 P0338 Ford Code
1. What are the common symptoms of OBDII code P0338 in a Ford vehicle?
- Common symptoms include engine stalling, rough idling, poor acceleration, and difficulty starting the engine.
2. What does the OBDII code P0338 in a Ford indicate?
- The code P0338 indicates a problem with the Crankshaft Position Sensor 'A' Circuit High.
3. What are the possible causes of the Crankshaft Position Sensor 'A' Circuit High code in a Ford?
- Possible causes include a faulty crankshaft position sensor, damaged wiring or connectors, a malfunctioning engine control module (ECM), or a problem with the sensor's signal.
4. How can I diagnose the issue causing OBDII code P0338 in my Ford?
- To diagnose the issue, you can use a diagnostic scanner to read the code, visually inspect the sensor and its wiring, test the sensor's output signal, and check for any loose connections.
5. Is it safe to continue driving with the OBDII code P0338 present in a Ford vehicle?
- It is not recommended to drive with the P0338 code active, as it can lead to further engine damage and potential safety hazards.
6. Can I repair the Crankshaft Position Sensor 'A' Circuit High issue in my Ford vehicle myself?
- If you have the necessary tools, experience, and knowledge, you may be able to repair the issue yourself by replacing the crankshaft position sensor or repairing any damaged wiring.
7. How much does it typically cost to fix the OBDII code P0338 in a Ford at a professional mechanic or dealership?
- The cost of fixing the P0338 code can vary depending on the specific issue, but it may range from $100 to $300 for parts and labor at a professional repair shop.
8. Are there any preventive measures I can take to avoid encountering the P0338 code in my Ford in the future?
- Regularly inspecting and maintaining the crankshaft position sensor, as well as ensuring proper wiring connections, can help prevent the occurrence of the P0338 code.
9. Will resetting the OBDII code P0338 in my Ford make the issue go away permanently?
- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the P0338 code is not addressed, the warning light is likely to reappear.
10. Can a faulty battery or alternator cause the OBDII code P0338 to trigger in a Ford vehicle?
- While a faulty battery or alternator can cause electrical issues, they are not common causes of the P0338 code. It is best to focus on diagnosing the crankshaft position sensor and its related components.
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