AutoCodes – Subaru – P0327 Subaru

P0327 Subaru Code - Knock Sensor 1 Circuit Low Input Bank 1 Or Single Sensor

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 Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: P0327 Subaru indicates Knock Sensor 1 Circuit Low Input Bank 1 Or Single Sensor.
Common causes: Common causes include Faulty knock sensor, Knock sensor circuit poor electrical connection, Knock sensor harness is open or shorted.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 40,567

How popular is this code, among other codes? Medium

Repair Importance Level

Moderate (Service soon) (2 / 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 Subaru 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 Subaru - Knock Sensor 1 Circuit Low Input Bank 1 Or Single Sensor - AutoCodes.com — P0327 Subaru Code - Knock Sensor 1 Circuit Low Input Bank 1 Or Single Sensor

What does this mean?

What are the Possible Causes of the DTC P0327 Subaru?

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 Subaru?

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 Subaru 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 Subaru 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 P0327 Subaru Code

1. What are the common symptoms of OBDII code P0327 in a Subaru?

- Common symptoms include engine knocking noises, reduced engine performance, and possibly an illuminated check engine light on the dashboard.

2. What causes the OBDII code P0327 in a Subaru?

- The code P0327 typically indicates a low input signal from the knock sensor 1 located in Bank 1 or a single sensor in the Subaru's engine.

3. How serious is the OBDII code P0327 in a Subaru?

- Ignoring the P0327 code can lead to potential engine damage over time due to inefficient engine performance and knock sensor issues. It is recommended to address this code promptly.

4. Can driving with the OBDII code P0327 in a Subaru cause further damage?

- Continuing to drive with the P0327 code can potentially lead to decreased fuel efficiency, engine misfires, and long-term engine damage if left unresolved.

5. How can I diagnose the OBDII code P0327 in my Subaru?

- Diagnosing the P0327 code involves using a scan tool to retrieve the code, checking the knock sensor's wiring and connections, and testing the sensor's resistance for proper functionality.

6. What are some possible repair tips for OBDII code P0327 in a Subaru?

- Repair tips may include inspecting and repairing damaged wiring, replacing the knock sensor, and clearing the code to see if the issue persists after repairs.

7. Is it possible to reset the OBDII code P0327 in a Subaru without fixing the underlying issue?

- While you can clear the code with an OBDII scan tool, it is not recommended to reset the code without addressing the underlying problem, as it may lead to further issues down the line.

8. How much does it typically cost to repair the OBDII code P0327 in a Subaru?

- The cost of repairing the P0327 code can vary depending on the specific issue, but it may involve costs for parts such as a new knock sensor and labor for installation.

9. Can a DIY enthusiast fix the OBDII code P0327 in a Subaru?

- Depending on your skill level and access to tools, DIY enthusiasts may be able to tackle the repair for the P0327 code by following online guides and tutorials. However, if unsure, it's best to consult a professional mechanic.

10. How often does the OBDII code P0327 reoccur in Subaru vehicles after repair?

- After proper diagnosis and repair of the P0327 code, it should not reoccur if the underlying issue has been successfully resolved. Regular maintenance can help avoid future occurrences.