AutoCodes – Volkswagen – P0328 Volkswagen

P0328 Volkswagen Code - Knock Sensor 1 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: P0328 Volkswagen indicates Knock Sensor 1 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 29,522

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
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0328 Volkswagen 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 P0328 Volkswagen - Knock Sensor 1 Circuit High - AutoCodes.com — P0328 Volkswagen Code - Knock Sensor 1 Circuit High

What does this mean?

What are the Possible Causes of the DTC P0328 Volkswagen?

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 P0328 Volkswagen?

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 P0328 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 P0328 Volkswagen 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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Need more information on how to fix the P0328 Volkswagen 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 P0328 Volkswagen Code

1. What are the common symptoms of OBDII code P0328 in a Volkswagen related to the Knock Sensor 1 Circuit High?

- Common symptoms include engine hesitation, loss of power, poor fuel economy, and an illuminated check engine light.

2. What can cause the OBDII code P0328 in a Volkswagen indicating a Knock Sensor 1 Circuit High fault?

- Potential causes include a faulty knock sensor, wiring issues, poor electrical connections, or engine mechanical problems.

3. How serious is the OBDII code P0328 related to the Knock Sensor 1 Circuit High in a Volkswagen?

- While the vehicle may still be operational with this code, ignoring it can lead to long-term engine damage and decreased performance.

4. Can I continue driving my Volkswagen with the OBDII code P0328 indicating a Knock Sensor 1 Circuit High issue?

- It is not recommended to drive the vehicle for an extended period with this fault, as it can affect engine performance and fuel efficiency.

5. How can I diagnose the OBDII code P0328 in my Volkswagen related to the Knock Sensor 1 Circuit High?

- Diagnosis typically involves using a scan tool to read the code, testing the knock sensor and related wiring, and inspecting for any visible damage.

6. What are the repair options for fixing the OBDII code P0328 in a Volkswagen with a Knock Sensor 1 Circuit High fault?

- Repair options may include replacing the knock sensor, repairing damaged wiring, addressing electrical issues, or fixing any underlying engine problems.

7. Are there any DIY tips for addressing the OBDII code P0328 in a Volkswagen indicating a Knock Sensor 1 Circuit High fault?

- While some basic checks like inspecting wiring connections can be done DIY, it is recommended to consult a professional for accurate diagnosis and repair.

8. How much does it typically cost to repair the OBDII code P0328 related to the Knock Sensor 1 Circuit High in a Volkswagen?

- Repair costs can vary depending on the exact cause of the issue, but expect to pay anywhere from $150 to $500 for parts and labor.

9. Can a faulty knock sensor trigger other OBDII fault codes besides P0328 in a Volkswagen?

- Yes, a malfunctioning knock sensor can sometimes trigger related fault codes like P0330 (Knock Sensor 2 Circuit Malfunction) or cause performance-related codes.

10. How often should the knock sensor be inspected or replaced in a Volkswagen to prevent OBDII code P0328 related to the Knock Sensor 1 Circuit High?

- It is recommended to inspect the knock sensor during routine maintenance and replace it if any signs of wear or malfunction are detected to prevent potential issues.