Engine-Codes.com
Engine-Codes – KIA – P0338 KIA

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

Quick Answer

The P0338 diagnostic trouble code (DTC) for KIA vehicles indicates a problem with the Crankshaft Position Sensor (CKP) 'B' Circuit High Input. Common causes include Faulty CKP sensor, Damaged wiring or connectors in the CKP sensor circuit, Corrosion or poor electrical connections. 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 CKP sensor, Damaged wiring or connectors in the CKP sensor circuit, Corrosion or poor electrical connections.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0338 KIA Description

The P0338 diagnostic trouble code (DTC) for KIA vehicles indicates a problem with the Crankshaft Position Sensor (CKP) 'B' Circuit High Input. The CKP sensor is a critical component in the engine management system as it provides the engine control module (ECM) with information about the position and speed of the crankshaft. This information is essential for proper fuel injection timing and ignition timing, ensuring that the engine runs smoothly and efficiently.

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

Common Causes of P0338 KIA

  1. Faulty CKP sensor
  2. Damaged wiring or connectors in the CKP sensor circuit
  3. Corrosion or poor electrical connections
  4. Issues with the ECM
  5. Timing belt or chain issues

Symptoms of P0338 KIA

  1. Engine misfires or rough idle
  2. Reduced engine power
  3. Difficulty starting the engine
  4. Engine stalling
  5. Poor fuel economy

How to Fix P0338 KIA

  1. Perform a thorough inspection of the CKP sensor, wiring, and connectors for any visible damage or wear.
  2. Test the CKP sensor using a multimeter to check for proper resistance and voltage output.
  3. Replace the CKP sensor if it is found to be faulty.
  4. Repair or replace any damaged wiring or connectors in the CKP sensor circuit.
  5. Clear the DTC from the ECM memory and perform a test drive to verify that the issue has been resolved.

Cost to Fix P0338 KIA

The typical repair costs for addressing the P0338 code on a KIA vehicle can range from $100 to $300, depending on the specific parts and labor required. It is important to note that diagnosis time and labor rates at auto repair shops can vary, so it is recommended to check with local shops for a more accurate estimate. Additional costs may apply if other components need to be replaced or repaired during the process.

What does this mean?

Tech Notes for P0338 KIA

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.

When is the Code Detected?

The crankshaft position sensor (POS) signal sent to the Electronic Control Module (ECM) is high

Need more information about the P0338 KIA code?

Need more information on how to fix the P0338 KIA code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0338 KIA code diagnosed by a professional: Find a repair shop in your area

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.

Discuss the causes and fixes for P0338 KIA OBDII Code

Submit a New Comment

Code P0338 KIA comments

No comments found for this page.