AutoCodes – Toyota – P0328 2002 Toyota Highlander

P0328 2002 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 2002 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 3,126

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 2002 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 2002 Toyota Highlander - Knock Sensor 1 Circuit High Input - AutoCodes.com — P0328 2002 Toyota Highlander Code - Knock Sensor 1 Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0328 2002 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 2002 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 2002 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 2002 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 2002 Toyota Highlander Code

1. What are the common symptoms of OBDII code P0328 in a 2002 Toyota Highlander?

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

2. What does the OBDII code P0328 on a 2002 Toyota Highlander indicate?

- The code P0328 indicates a high input signal from Knock Sensor 1 Circuit in the engine.

3. What are the possible causes of the Knock Sensor 1 Circuit High Input error in a 2002 Toyota Highlander?

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

4. How can I diagnose the Knock Sensor 1 Circuit High Input issue in my 2002 Toyota Highlander?

- Diagnose the issue by visually inspecting the wiring and connectors, testing the knock sensor's resistance, and checking for any engine performance issues.

5. Can I continue driving my 2002 Toyota Highlander with the P0328 code?

- It is not recommended to continue driving with the P0328 code, as it can lead to further engine damage and decreased performance.

6. How can I repair the Knock Sensor 1 Circuit High Input problem in my 2002 Toyota Highlander?

- Repair options include replacing the knock sensor, repairing any damaged wiring or connectors, and resetting the engine control module.

7. Is it possible to reset the OBDII code P0328 in a 2002 Toyota Highlander without fixing the underlying issue?

- Resetting the code without addressing the underlying problem may temporarily turn off the check engine light, but the issue will likely reoccur.

8. Can a DIY enthusiast fix the Knock Sensor 1 Circuit High Input error in a 2002 Toyota Highlander?

- While some DIY enthusiasts may be able to replace the knock sensor or repair wiring, diagnosing and fixing complex issues may require professional help.

9. How much does it typically cost to repair the P0328 code in a 2002 Toyota Highlander?

- The cost of repairing the P0328 code can vary depending on the cause of the issue, but it may range from $200 to $500 including parts and labor.

10. How can I prevent the OBDII code P0328 from recurring in my 2002 Toyota Highlander?

- To prevent the code from recurring, ensure regular maintenance of the engine components, check the knock sensor periodically, and address any issues promptly.