AutoCodes – Toyota – P0327 2007 Toyota Prius

P0327 2007 Toyota Prius Code - Knock Sensor 1 Circuit Low 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: P0327 2007 Toyota Prius indicates Knock Sensor 1 Circuit Low 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 4,785

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 P0327 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 P0327 2007 Toyota Prius - Knock Sensor 1 Circuit Low Input - AutoCodes.com — P0327 2007 Toyota Prius Code - Knock Sensor 1 Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0327 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 P0327 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 P0327 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 P0327 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 P0327 2007 Toyota Prius code?

Need more information on how to fix the P0327 2007 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 P0327 2007 Toyota Prius Code

1. What does the OBDII code P0327 for a 2007 Toyota Prius indicate?

The code P0327 for a 2007 Toyota Prius specifically refers to the Knock Sensor 1 Circuit Low Input.

2. What are the common symptoms of a Knock Sensor 1 Circuit Low Input issue in a 2007 Toyota Prius?

Common symptoms include engine performance issues such as reduced power, hesitation, rough idle, and potentially increased fuel consumption.

3. What are the possible causes of a Knock Sensor 1 Circuit Low Input code in a 2007 Toyota Prius?

Possible causes may include a faulty knock sensor, wiring issues in the knock sensor circuit, poor electrical connections, or even engine problems causing excessive knocking.

4. How can I diagnose a Knock Sensor 1 Circuit Low Input problem in my 2007 Toyota Prius?

Diagnosis typically involves using a scan tool to read the OBDII trouble code, inspecting the knock sensor and its wiring for damage, and testing the sensor's resistance and voltage.

5. Can I continue driving my 2007 Toyota Prius with a P0327 code?

It is not recommended to continue driving with a P0327 code as it can lead to potential engine damage and decreased fuel efficiency over time.

6. How can I repair a Knock Sensor 1 Circuit Low Input issue in my 2007 Toyota Prius?

Repair options may include replacing the knock sensor, repairing or replacing damaged wiring, ensuring proper electrical connections, and clearing the trouble code.

7. Is it possible to reset the P0327 code in a 2007 Toyota Prius without fixing the underlying issue?

While you can clear the trouble code temporarily, it will likely return if the root cause of the Knock Sensor 1 Circuit Low Input problem is not addressed.

8. Can a faulty knock sensor cause other issues in a 2007 Toyota Prius?

Yes, a faulty knock sensor can cause engine performance issues, potentially trigger additional trouble codes, and impact overall drivability.

9. How much does it typically cost to repair a Knock Sensor 1 Circuit Low Input problem in a 2007 Toyota Prius?

Costs can vary depending on the exact cause of the issue, but generally, replacing a knock sensor and addressing related wiring problems may range from $200 to $500.

10. Are there any preventive maintenance steps to avoid P0327 in a 2007 Toyota Prius?

Regular maintenance, such as using high-quality fuel, performing timely tune-ups, and avoiding harsh driving conditions, can help prevent issues that may lead to a Knock Sensor 1 Circuit Low Input code.