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P0338 Hyundai Code - Crankshaft Position Sensor 'A' Circuit High Input

Quick Answer

The P0338 code for Hyundai indicates that there is a high input signal detected in the circuit for the crankshaft position sensor 'A'. Common causes include Faulty crankshaft position sensor, Damaged or corroded wiring/connectors in the sensor circuit, Issues with the ECM. 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 Hyundai indicates Crankshaft Position Sensor 'A' Circuit High Input.
Common causes
Common causes include Faulty crankshaft position sensor, Damaged or corroded wiring/connectors in the sensor circuit, Issues with the ECM.
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 Aug 19, 2024
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Code P0338 Hyundai Description

The P0338 code for Hyundai indicates that there is a high input signal detected in the circuit for the crankshaft position sensor 'A'. The crankshaft position sensor is a vital component in the engine management system, as it provides the ECM (Engine Control Module) with information about the crankshaft's position and speed. This information is crucial for the ECM to determine the correct ignition timing and fuel injection timing.

OBDII Code P0338 Hyundai - Crankshaft Position Sensor 'A' Circuit High Input
P0338 Hyundai Code - Crankshaft Position Sensor 'A' Circuit High Input

Common Causes of P0338 Hyundai

  1. Faulty crankshaft position sensor
  2. Damaged or corroded wiring/connectors in the sensor circuit
  3. Issues with the ECM
  4. Poor electrical connection
  5. Engine timing belt or chain issues

Symptoms of P0338 Hyundai

  1. Engine misfires or rough idling
  2. Difficulty starting the engine
  3. Reduced fuel efficiency
  4. Engine stalling
  5. Illumination of the Check Engine Light

How to Fix P0338 Hyundai

  1. Diagnose the issue by using a scan tool to confirm the P0338 code and perform additional testing if necessary.
  2. Inspect the crankshaft position sensor and its wiring for any damage or corrosion. Replace the sensor if necessary.
  3. Check the wiring harness and connectors for any faults and repair or replace as needed.
  4. Clear the code and perform a test drive to ensure the issue has been resolved.
  5. If the problem persists, further diagnostics may be required to identify any underlying issues with the ECM or engine components.

Cost to Fix P0338 Hyundai

The cost of repairing a P0338 code on a Hyundai can vary depending on the specific model and the extent of the issue. Typically, the cost of replacing a crankshaft position sensor ranges from $100 to $300, including parts and labor. Additional costs may apply if there are underlying issues that need to be addressed. It's recommended to consult with a qualified mechanic or dealership for a more accurate estimate based on your vehicle's specific needs.

What does this mean?

Tech Notes for P0338 Hyundai

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

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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 Hyundai Code

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

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

2. What are the possible causes of the OBDII code P0338 in a Hyundai?

Common causes of this code include a faulty crankshaft position sensor, damaged wiring or connectors in the circuit, or issues with the engine control module (ECM).

3. How can I diagnose the cause of OBDII code P0338 in my Hyundai?

To diagnose this code, you can use a scan tool to read the code, inspect the wiring and connectors for any damage, test the crankshaft position sensor for proper function, and check the ECM for any related issues.

4. Can a faulty Crankshaft Position Sensor 'A' Circuit High Input cause engine damage in a Hyundai?

While a faulty sensor itself may not cause direct engine damage, ignoring this issue can lead to potential problems like poor engine performance, stalling, and other issues that may harm the engine in the long run.

5. How can I repair OBDII code P0338 in my Hyundai?

To repair this code, you may need to replace the crankshaft position sensor, repair or replace any damaged wiring or connectors, and clear the code using a scan tool. It's recommended to follow the manufacturer's repair procedures.

6. Is it safe to drive my Hyundai with OBDII code P0338 present?

It is not recommended to drive your Hyundai with this code present, as it can lead to potential engine issues and safety hazards. It's best to address the problem promptly to prevent further damage.

7. Can a DIY enthusiast fix OBDII code P0338 in a Hyundai?

Depending on your knowledge and experience with automotive repairs, you may be able to fix this code yourself. However, working with sensors and electrical components requires precision, so it's essential to proceed with caution and follow proper repair procedures.

8. How much does it cost to repair OBDII code P0338 in a Hyundai?

The cost of repairing this code can vary depending on the cause of the issue, the labor rates in your area, and whether you choose to repair it yourself or take it to a professional mechanic. Costs may include parts, labor, and diagnostic fees.

9. Can a disconnected or loose crankshaft position sensor trigger OBDII code P0338 in a Hyundai?

Yes, a disconnected or loose crankshaft position sensor can trigger this code as it may result in a high input signal being sent to the ECM, indicating a circuit malfunction.

10. How long does it take to repair OBDII code P0338 in a Hyundai?

The repair time for this code can vary based on the cause of the issue, the availability of parts, and the expertise of the person performing the repair. It may take a few hours to a full day to diagnose and fix the problem successfully.

Discuss the causes and fixes for P0338 Hyundai OBDII Code

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  • the RPM's on my car will all of the sudden drop to zero while i am driving, then all the sudden jump back up to normal, almost like the car dies while moving, but starts back up again by itself, or i have trouble starting the car. i replaced the crankshaft sensor two years ago. recently my diehard battery died after having it for only about a year. i replaced the battery, all four fuel injectors and the crankshaft sensor, and both coils in the past two years i have a 2005 Hyundai Sonata

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