AutoCodes – Audi – P0333 Audi

P0333 Audi Code - Knock Sensor 2 Circuit High

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 Audi indicates Knock Sensor 2 Circuit High.
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 16,830

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 Audi 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 Audi - Knock Sensor 2 Circuit High - AutoCodes.com — P0333 Audi Code - Knock Sensor 2 Circuit High

What does this mean?

What are the Possible Causes of the DTC P0333 Audi?

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 Audi?

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 Audi 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 Audi code?

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

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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 P0333 Audi Code

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

- Common symptoms include engine hesitation, reduced power, engine knocking noises, and an illuminated Check Engine Light.

2. What causes the OBDII code P0333 in an Audi indicating a Knock Sensor 2 Circuit High?

- The code can be triggered by issues such as a faulty knock sensor, wiring harness problems, poor electrical connections, or engine mechanical problems.

3. How can I diagnose the OBDII code P0333 related to the Knock Sensor 2 Circuit High in my Audi?

- Diagnosis involves using a scan tool to read the code, testing the knock sensor and related wiring for continuity, and inspecting for any damaged components.

4. Is it safe to continue driving with OBDII code P0333 indicating a Knock Sensor 2 Circuit High in my Audi?

- It is not recommended to drive the vehicle with this code as it can lead to decreased engine performance and potential damage if left unresolved.

5. Can I repair the OBDII code P0333 in my Audi related to the Knock Sensor 2 Circuit High by myself?

- While some DIY enthusiasts may attempt the repair, it is recommended to consult a professional mechanic to accurately diagnose and fix the issue.

6. How much does it typically cost to repair OBDII code P0333 in an Audi due to a Knock Sensor 2 Circuit High?

- The cost can vary depending on the exact cause of the issue, but repairs for this code generally range from $200 to $500, including parts and labor.

7. Will resetting the Check Engine Light manually resolve the OBDII code P0333 related to the Knock Sensor 2 Circuit High in my Audi?

- Resetting the light may temporarily turn it off, but it will not fix the underlying problem causing the code to reappear.

8. Are there any preventive measures to avoid triggering OBDII code P0333 in an Audi related to the Knock Sensor 2 Circuit High?

- Regular maintenance, such as checking the engine components and wiring harnesses, can help prevent issues that may lead to this code.

9. Can a faulty knock sensor cause other problems in addition to triggering OBDII code P0333 in an Audi?

- Yes, a malfunctioning knock sensor can affect engine performance, fuel efficiency, and emissions control, leading to potential long-term damage if not addressed promptly.

10. How long does it typically take to repair OBDII code P0333 in an Audi indicating a Knock Sensor 2 Circuit High?

- The repair time can vary based on the exact cause of the issue and the mechanic's workload, but it usually takes a few hours to a full day to diagnose and fix the problem.