AutoCodes – Toyota – P0328 2005 Toyota Prius

P0328 2005 Toyota Prius Code - Knock Sensor 1 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 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: P0328 2005 Toyota Prius indicates Knock Sensor 1 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: 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.

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Code Popularity 3,874

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 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 2005 Toyota Prius 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 2005 Toyota Prius - Knock Sensor 1 Circuit High Input - AutoCodes.com — P0328 2005 Toyota Prius Code - Knock Sensor 1 Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0328 2005 Toyota Prius?

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 2005 Toyota Prius?

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 2005 Toyota Prius 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 P0328 2005 Toyota Prius code?

Need more information on how to fix the P0328 2005 Toyota Prius 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 2005 Toyota Prius Code

1. What are the common symptoms of OBDII code P0328 in a 2005 Toyota Prius?

- Common symptoms include poor engine performance, decreased fuel efficiency, and potential engine knocking noises.

2. What does the OBDII code P0328 for a 2005 Toyota Prius indicate?

- OBDII code P0328 indicates a Knock Sensor 1 Circuit High Input issue in the vehicle's engine.

3. What are the possible causes of the Knock Sensor 1 Circuit High Input code in a 2005 Toyota Prius?

- Possible causes include a faulty knock sensor, wiring issues, a damaged knock sensor connector, or a problem with the engine control module.

4. How can I diagnose the OBDII code P0328 in my 2005 Toyota Prius?

- Diagnosing this code typically involves using a scan tool to read the code and checking the knock sensor and related wiring for any visible damage.

5. Can I drive my 2005 Toyota Prius with the P0328 code?

- It is not recommended to drive your vehicle with an active P0328 code, as it can lead to more severe engine problems if left unresolved.

6. How can I repair the Knock Sensor 1 Circuit High Input issue in my 2005 Toyota Prius?

- Repairing this issue may involve replacing the knock sensor, repairing or replacing damaged wiring, or addressing any issues with the engine control module.

7. Is it possible to reset the OBDII code P0328 in a 2005 Toyota Prius?

- Yes, you can reset the code using an OBDII scanner or by disconnecting the car's battery for a few minutes. However, the code will likely return if the underlying issue is not fixed.

8. Will the P0328 code cause my 2005 Toyota Prius to fail an emissions test?

- Yes, the P0328 code can cause your vehicle to fail an emissions test, as it indicates a problem with the knock sensor circuit that can affect engine performance.

9. How much does it typically cost to repair the Knock Sensor 1 Circuit High Input issue in a 2005 Toyota Prius?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $200 to $500 for parts and labor.

10. Can a DIY enthusiast fix the P0328 code in a 2005 Toyota Prius?

- While some DIY enthusiasts may have the skills to diagnose and repair the issue, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure the problem is fixed correctly.