AutoCodes – KIA – P0338 KIA

P0338 KIA Code - Crankshaft Position Sensor (CKP) 'B' Circuit High Input

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 KIA indicates Crankshaft Position Sensor (CKP) 'B' Circuit High Input.
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.

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Code Popularity 17,492

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0338 KIA Description

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. This information is used by the Electronic Control Module(ECM) to control ignition and fuel injection. The sensor system consists of a rotating part, typically a disc, as well as a static part, the actual sensor.
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.

OBDII Code P0338 KIA - Crankshaft Position Sensor (CKP) 'B' Circuit High Input - AutoCodes.com — P0338 KIA Code - Crankshaft Position Sensor (CKP) 'B' Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0338 KIA?

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 KIA?

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 does this mean?

Code Tech Notes

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 replaced battery.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0338 KIA 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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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 P0338 KIA Code

1. What are common symptoms of OBDII code P0338 in a KIA related to the Crankshaft Position Sensor 'B' Circuit High Input?

The common symptoms include rough idling, engine misfires, stalling, difficulty starting the engine, and a decrease in fuel efficiency.

2. What are the possible causes of the OBDII code P0338 in a KIA indicating a high input in the Crankshaft Position Sensor 'B' circuit?

Potential causes include a faulty crankshaft position sensor, damaged wiring or connectors in the sensor circuit, issues with the sensor's internal circuitry, or a problem with the engine control module (ECM).

3. How can I diagnose the OBDII code P0338 in my KIA indicating a high input in the Crankshaft Position Sensor 'B' circuit?

Diagnosis involves checking the sensor's wiring and connectors for any damage, testing the sensor's resistance and voltage output, and using a scan tool to monitor the sensor's data while the engine is running.

4. What are the recommended repair tips for fixing OBDII code P0338 in a KIA related to the Crankshaft Position Sensor 'B' Circuit High Input?

Repair tips include replacing the faulty crankshaft position sensor, repairing or replacing damaged wiring or connectors, ensuring proper sensor alignment, and clearing the trouble codes with a scan tool after repairs.

5. Can driving with the OBDII code P0338 in a KIA indicating a high input in the Crankshaft Position Sensor 'B' circuit cause further damage to the vehicle?

Continued driving with this issue can potentially lead to further engine damage, reduced fuel efficiency, and an increased risk of stalling or engine failure, so it is recommended to address the problem promptly.

6. Are there any preventive measures to avoid encountering the OBDII code P0338 in a KIA due to the Crankshaft Position Sensor 'B' Circuit High Input issue?

Regularly inspecting the sensor and its wiring for any signs of wear or damage, following the manufacturer's recommended maintenance schedule, and addressing any engine performance issues promptly can help prevent this problem.

7. How long does it typically take to repair the OBDII code P0338 in a KIA related to the Crankshaft Position Sensor 'B' Circuit High Input?

The repair time can vary depending on the exact cause of the issue, but replacing the crankshaft position sensor and addressing any wiring issues usually takes a few hours to complete.

8. Is it possible to reset the OBDII code P0338 in a KIA indicating a high input in the Crankshaft Position Sensor 'B' circuit without fixing the underlying problem?

While you can clear the trouble code with a scan tool, the issue will likely return if the root cause is not addressed, and driving with the problem unresolved can lead to further complications.

9. Will fixing the OBDII code P0338 in a KIA related to the Crankshaft Position Sensor 'B' Circuit High Input improve the overall performance of the vehicle?

Yes, resolving this issue should improve engine performance, idle smoothness, starting reliability, and fuel efficiency, restoring the vehicle to its optimal operating condition.

10. How much does it cost to repair the OBDII code P0338 in a KIA due to the Crankshaft Position Sensor 'B' Circuit High Input issue at a dealership or a mechanic?

The cost of repairs can vary depending on the labor rates, parts required, and the extent of the damage, but it is advisable to obtain quotes from different service providers for comparison.