AutoCodes – Toyota – P0328 2007 Toyota Prius

P0328 2007 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 2007 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 4,583

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 2007 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 2007 Toyota Prius - Knock Sensor 1 Circuit High Input - AutoCodes.com — P0328 2007 Toyota Prius Code - Knock Sensor 1 Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0328 2007 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 2007 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 2007 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 2007 Toyota Prius code?

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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 2007 Toyota Prius Code

1. What are the common symptoms of OBDII code P0328 in a 2007 Toyota Prius?

- Common symptoms include reduced engine performance, poor fuel economy, and potential engine misfires.

2. What is the likely cause of OBDII code P0328 in a 2007 Toyota Prius?

- The most likely cause is a faulty knock sensor, which detects abnormal engine vibrations known as knocking or pinging.

3. How does a faulty knock sensor lead to a "Knock Sensor 1 Circuit High Input" error code?

- A faulty knock sensor can send incorrect signals to the engine control module, indicating a high input voltage on the Knock Sensor 1 circuit.

4. Can a damaged wiring harness cause OBDII code P0328 in a 2007 Toyota Prius?

- Yes, a damaged wiring harness connecting the knock sensor to the engine control module can also trigger the code due to signal interference or disconnection.

5. Is it safe to continue driving a 2007 Toyota Prius with OBDII code P0328?

- It is not recommended to drive the vehicle with this code present, as it can lead to engine damage if the issue is not addressed promptly.

6. How can I diagnose a faulty knock sensor in my 2007 Toyota Prius?

- A professional diagnostic scan tool can help identify the specific reason behind the knock sensor malfunction, whether it's the sensor itself or related wiring issues.

7. What are the repair options for fixing OBDII code P0328 in a 2007 Toyota Prius?

- Repair options include replacing the faulty knock sensor, repairing any damaged wiring, and clearing the error code from the engine control module.

8. Can a DIY enthusiast replace the knock sensor in a 2007 Toyota Prius?

- While it is possible for experienced DIY enthusiasts to replace the knock sensor, it is recommended to seek professional help to ensure proper installation and calibration.

9. Are there any preventive maintenance tips to avoid OBDII code P0328 in a 2007 Toyota Prius?

- Regularly inspecting the knock sensor and its wiring for signs of wear or damage can help prevent issues that may trigger this error code.

10. How long does it typically take to repair OBDII code P0328 in a 2007 Toyota Prius?

- The repair time can vary depending on the extent of the issue, but it usually takes a few hours to replace the knock sensor and address any related wiring problems.