P0338 Chevrolet Code - Crankshaft Position Sensor Circuit High Duty Cycle
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
- P0338 Chevrolet indicates Crankshaft Position Sensor Circuit High Duty Cycle.
- 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 Chevrolet 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 Chevrolet?
- 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 Chevrolet?
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 P0338 Chevrolet 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 Chevrolet Code
1. What are the common symptoms of OBDII code P0338 in a Chevrolet related to the Crankshaft Position Sensor Circuit High Duty Cycle?
The common symptoms include engine stalling, rough idling, difficulty starting the vehicle, and a decrease in fuel efficiency.
2. What are the possible causes of OBDII code P0338 in a Chevrolet indicating a high duty cycle in the Crankshaft Position Sensor circuit?
Possible causes include a faulty crankshaft position sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine's timing system.
3. How can I diagnose the cause of OBDII code P0338 in my Chevrolet?
Diagnosing this code typically involves using a scan tool to read the code, testing the crankshaft position sensor and its circuit using a multimeter, and checking for any damaged wiring or connectors.
4. Can a faulty crankshaft position sensor cause code P0338 in a Chevrolet?
Yes, a faulty crankshaft position sensor is a common cause of OBDII code P0338 in a Chevrolet, as it can lead to incorrect readings being sent to the engine control module.
5. What are some repair tips for fixing OBDII code P0338 indicating a high duty cycle in the Crankshaft Position Sensor circuit in a Chevrolet?
Repair tips may include replacing the crankshaft position sensor, repairing any damaged wiring or connectors, resetting the fault codes, and performing a test drive to ensure the issue is resolved.
6. Is it safe to continue driving my Chevrolet with OBDII code P0338 related to the Crankshaft Position Sensor Circuit High Duty Cycle?
It is not recommended to continue driving your Chevrolet with this code present, as it can lead to further engine performance issues and potential damage if left unresolved.
7. How much does it typically cost to repair OBDII code P0338 in a Chevrolet caused by a high duty cycle in the Crankshaft Position Sensor circuit?
The cost of repairing this code can vary depending on the exact cause, but it may range from $100 to $300 for parts and labor.
8. Can I reset OBDII code P0338 in my Chevrolet without fixing the underlying issue?
While you can clear the code using a scan tool, it is not recommended to do so without addressing the root cause, as the issue may persist and lead to further problems.
9. Are there any preventive measures I can take to avoid OBDII code P0338 in my Chevrolet?
Regular maintenance, such as checking and replacing the crankshaft position sensor at recommended intervals, can help prevent issues that may trigger OBDII code P0338.
10. Will OBDII code P0338 in a Chevrolet reset on its own after the issue is fixed?
In most cases, once the underlying issue triggering the code is resolved, the code should reset on its own after a few driving cycles.
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