AutoCodes – KIA – P0333 KIA

P0333 KIA Code - Knock Sensor 2 Circuit High Input

Quick Answer

The knock sensor is attached to the cylinder block. Common causes include Faulty knock sensor, Knock sensor circuit poor electrical connection, Knock sensor harness is open or shorted. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: P0333 KIA indicates Knock Sensor 2 Circuit High Input.
Common causes: Common causes include Faulty knock sensor, Knock sensor circuit poor electrical connection, Knock sensor harness is open or shorted.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 3,799

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 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 P0333 KIA Description

The knock sensor is attached to the cylinder block. It senses engine knocking using a piezoelectric element. A knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a voltage signal and sent to the Engine Control Module (ECM).

OBDII Code P0333 KIA - Knock Sensor 2 Circuit High Input - AutoCodes.com — P0333 KIA Code - Knock Sensor 2 Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0333 KIA?

Faulty knock sensor
Knock sensor circuit poor electrical connection
Knock sensor harness is open or shorted
Faulty Engine Control Module (ECM)

How to Fix the DTC P0333 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

The P0333 code means that the Knock Sensor is not working properly. Problems with the knock sensor will not cause an engine performance problems. Replacing the knock sensor usually takes care of the problem.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0333 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.

Need more information about the P0333 KIA code?

Need more information on how to fix the P0333 KIA code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0333 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 P0333 KIA Code

1. What are the common symptoms of OBDII code P0333 in a KIA related to Knock Sensor 2 Circuit High Input?

Symptoms may include engine knocking or pinging noises, decreased engine performance, and illuminated Check Engine Light.

2. What are the potential causes of OBDII code P0333 in a KIA?

Possible causes include a faulty knock sensor, damaged wiring or connectors in the knock sensor circuit, engine mechanical issues, or a malfunctioning Engine Control Module (ECM).

3. How can I diagnose the OBDII code P0333 in my KIA?

Diagnosis typically involves using a scan tool to read the code, inspecting the knock sensor and its wiring for damage, checking for any engine mechanical problems, and testing the knock sensor's electrical signal.

4. Is it safe to continue driving with OBDII code P0333 in a KIA?

It is generally not recommended to drive with a faulty knock sensor, as it can lead to engine damage or poor performance. It's best to address the issue promptly.

5. Can I repair OBDII code P0333 in my KIA myself?

Depending on your mechanical skills, you may be able to replace the knock sensor or repair damaged wiring yourself. However, complex issues or ECM-related problems may require professional diagnosis and repair.

6. How much does it typically cost to fix OBDII code P0333 in a KIA?

Costs can vary depending on the cause of the code and whether you choose to DIY or seek professional help. Replacing a knock sensor can cost anywhere from $100 to $300, while addressing engine mechanical issues may be more expensive.

7. Are there any preventive measures to avoid OBDII code P0333 in a KIA?

Regular engine maintenance, such as using high-quality fuel and performing timely oil changes, can help prevent issues that may trigger knock sensor-related codes like P0333.

8. Can a bad knock sensor cause other problems in a KIA besides triggering OBDII code P0333?

Yes, a malfunctioning knock sensor can lead to poor fuel economy, engine misfires, and potentially damage the engine if left unresolved.

9. How long does it typically take to repair OBDII code P0333 in a KIA?

The repair time can vary based on the specific cause of the code and the expertise of the person performing the repair. Simple knock sensor replacements may take a couple of hours, while more complex issues could require more time.

10. Will resetting the Check Engine Light resolve OBDII code P0333 in a KIA?

Resetting the light will clear the immediate notification, but if the underlying issue causing the code is not fixed, the light may come back on. It's crucial to address the root cause of the code for a lasting solution.