AutoCodes – Toyota – P0328 2007 Toyota Highlander

P0328 2007 Toyota Highlander 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 Highlander 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 4,648

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

What does this mean?

What are the Possible Causes of the DTC P0328 2007 Toyota Highlander?

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 Highlander?

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.

You maybe also consider replacing the knock sensor short harness to avoid future problems.
If you have a V6 Toyota Highlander, it is recommended you replace both knock sensors and short harness to avoid re-doing the labor since it is alot of work, since it is located under the intake manifold.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0328 2007 Toyota Highlander 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 Highlander 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 Highlander Code

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

- Common symptoms include engine knocking noises, reduced engine performance, and the illumination of the Check Engine Light.

2. What does the OBDII code P0328 "Knock Sensor 1 Circuit High Input" mean for a 2007 Toyota Highlander?

- This code indicates that the engine control module (ECM) has detected a high input signal from the knock sensor 1 circuit.

3. What are some possible causes of the P0328 code in a 2007 Toyota Highlander?

- Potential causes include a faulty knock sensor, damaged wiring or connectors in the knock sensor circuit, or a problem with the ECM.

4. How can I diagnose the cause of the P0328 code in my 2007 Toyota Highlander?

- Diagnosing the issue typically involves testing the knock sensor, inspecting the wiring and connectors for damage, and checking the ECM for any faults.

5. Can I continue driving my 2007 Toyota Highlander with the P0328 code present?

- It is not recommended to drive the vehicle with the P0328 code as it can lead to engine damage and poor performance if left unresolved.

6. How can I repair the Knock Sensor 1 Circuit High Input issue in my 2007 Toyota Highlander?

- Repairing the issue may involve replacing the knock sensor, repairing or replacing damaged wiring or connectors, or reprogramming the ECM if necessary.

7. Are there any DIY tips for troubleshooting the P0328 code in a 2007 Toyota Highlander?

- DIY enthusiasts can start by visually inspecting the knock sensor and its wiring for any visible damage before proceeding with further diagnostic tests.

8. Can a faulty knock sensor cause other problems in my 2007 Toyota Highlander?

- Yes, a faulty knock sensor can lead to decreased fuel efficiency, engine misfires, and potential damage to the engine if not addressed promptly.

9. How much does it typically cost to repair the Knock Sensor 1 Circuit High Input issue in a 2007 Toyota Highlander?

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

10. Is it possible to prevent the recurrence of the P0328 code in my 2007 Toyota Highlander?

- Regular maintenance, such as checking the knock sensor and its wiring during routine inspections, can help prevent the recurrence of the P0328 code.