AutoCodes – Infiniti – P0328 Infiniti

P0328 Infiniti Code - Knock Sensor Circuit High Input- Bank 1

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 Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
P0328 Infiniti indicates Knock Sensor Circuit High Input- Bank 1.
Common causes
Common causes include Faulty knock sensor, Knock sensor circuit poor electrical connection, Knock sensor harness is open or shorted.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
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Code Popularity 22,814
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0328 Infiniti 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 Infiniti - Knock Sensor Circuit High Input- Bank 1 - AutoCodes.com
P0328 Infiniti Code - Knock Sensor Circuit High Input- Bank 1

What are the Possible Causes of the DTC P0328 Infiniti?

  • 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 Infiniti?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0328 Infiniti 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 Infiniti code?

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Information for Specific Infiniti Models

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 Infiniti Code

1. What does the OBDII code P0328 mean for an Infiniti vehicle?

P0328 indicates a "Knock Sensor Circuit High Input" for Bank 1, meaning the knock sensor is detecting a signal voltage that is higher than expected.

2. What are the common symptoms of a P0328 code in an Infiniti?

Symptoms may include poor engine performance, reduced fuel efficiency, engine knocking or pinging sounds, and sometimes an illuminated Check Engine Light.

3. What causes the P0328 code in an Infiniti?

Common causes include a faulty knock sensor, damaged sensor wiring, a poor electrical connection, or an internal engine issue causing abnormal knocking.

4. Can I drive my Infiniti with a P0328 code?

Driving with this code is not recommended, as it may lead to engine damage if knocking occurs unchecked. It's best to address the issue promptly.

5. How do I fix the P0328 code in my Infiniti?

Repairs typically involve inspecting and replacing the knock sensor, repairing damaged wiring or connectors, and addressing any mechanical engine issues.

6. Where is the knock sensor located on an Infiniti engine?

The knock sensor is usually located on the engine block, cylinder head, or intake manifold, depending on the model and year of the Infiniti.

7. How much does it cost to fix a P0328 code on an Infiniti?

Repair costs can range from $200 to $600 or more, depending on whether the knock sensor, wiring, or other components need replacement.

8. Can a bad knock sensor damage my Infiniti's engine?

While a bad knock sensor itself won't directly damage the engine, ignoring the issue may result in engine knocking, which can cause severe damage over time.

9. How do I prevent the P0328 code from recurring in my Infiniti?

Regular maintenance, using the correct fuel grade, and addressing engine issues promptly can help prevent this code from recurring.

10. Will a P0328 code cause my Infiniti to fail an emissions test?

Yes, a P0328 code may cause your vehicle to fail an emissions test because it can affect engine performance and increase emissions output.

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