AutoCodes – Infiniti – P0330 Infiniti

P0330 Infiniti Code - Knock Sensor 2 Circuit Malfunction Bank 2

Quick Answer

The Knock Sensor (KS) senses engine knocking (also known as detonation or pinging) using a piezoelectric element. Common causes include Faulty Knock Sensor Bank 2, Knock Sensor Bank 2 circuit poor electrical connection, Knock Sensor Bank 2 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: P0330 Infiniti indicates Knock Sensor 2 Circuit Malfunction Bank 2.
Common causes: Common causes include Faulty Knock Sensor Bank 2, Knock Sensor Bank 2 circuit poor electrical connection, Knock Sensor Bank 2 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 269

How popular is this code, among other codes? Low

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 Nov 04, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0330 Infiniti Description

The Knock Sensor (KS) senses engine knocking (also known as detonation or pinging) using a piezoelectric element. The sensor is attached to the cylinder block, cylinder head or intake manifold. 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). The ECM uses this signal to retard the ignition timing and protect the engine from this damaging pre-ignition.

OBDII Code P0330 Infiniti - Knock Sensor 2 Circuit Malfunction Bank 2 - AutoCodes.com — P0330 Infiniti Code - Knock Sensor 2 Circuit Malfunction Bank 2

What does this mean?

What are the Possible Causes of the DTC P0330 Infiniti?

Faulty Knock Sensor Bank 2
Knock Sensor Bank 2 circuit poor electrical connection
Knock Sensor Bank 2 harness is open or shorted
Faulty Engine Control Module (ECM)

How to Fix the DTC P0330 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.

What does this mean?

Code Tech Notes

The P0330 code means that the Knock Sensor is not working correctly. Problems with the knock sensor will not cause 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 P0330 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 P0330 Infiniti 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 P0330 Infiniti Code

What does the OBDII code P0330 mean for an Infiniti?

The P0330 code indicates a malfunction in the knock sensor 2 circuit on Bank 2, which detects engine knocking or pinging and helps the engine adjust timing to prevent damage.

What are common symptoms of the P0330 code in an Infiniti?

Symptoms may include reduced engine performance, poor acceleration, increased fuel consumption, and in some cases, the Check Engine Light appearing without noticeable drivability issues.

What causes the P0330 code to appear in an Infiniti?

Common causes include a faulty knock sensor, damaged sensor wiring or connectors, engine mechanical issues causing excessive knocking, or a problem with the ECM.

Can I drive my Infiniti with the P0330 code active?

While the vehicle may still be drivable, ignoring this code can lead to reduced fuel efficiency, poor engine performance, and potential long-term damage if engine knocking persists.

How do I fix the P0330 code on an Infiniti?

Repairs may include replacing the knock sensor, repairing damaged wiring or connectors, addressing engine knocking causes, or reprogramming the ECM if necessary.

Where is Knock Sensor 2 located on an Infiniti?

Knock Sensor 2 is typically located on Bank 2 of the engine, which is the side opposite Bank 1 (where cylinder 1 is located). Refer to your vehicle's service manual for the exact location.

How much does it cost to repair the P0330 code on an Infiniti?

Repair costs can vary, but replacing a knock sensor usually costs around $200 to $500, including parts and labor. Wiring repairs or additional diagnostics may increase the price.

Can a bad knock sensor damage the engine?

A failing knock sensor itself wonâ€™t damage the engine, but if it fails to detect knocking, prolonged engine knocking can cause significant internal damage over time.

Will clearing the P0330 code fix the issue?

Clearing the code will temporarily turn off the Check Engine Light, but it won't fix the underlying problem causing the code, so the issue will likely return.

Do I need special tools to diagnose the P0330 code?

Basic tools like an OBDII scanner can read and clear the code, but advanced diagnostics may require a multimeter or oscilloscope to test the knock sensor and its circuit.