AutoCodes – Lexus – P0332 Lexus

P0332 Lexus Code - Knock Sensor 2 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: P0332 Lexus indicates Knock Sensor 2 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 8,956

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
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0332 Lexus 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 P0332 Lexus - Knock Sensor 2 Circuit Low Input - AutoCodes.com — P0332 Lexus Code - Knock Sensor 2 Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0332 Lexus?

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 P0332 Lexus?

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 P0332 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 P0332 Lexus 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 P0332 Lexus code?

Need more information on how to fix the P0332 Lexus code? Get Access to Factory Service Manuals

Need Help with the 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 P0332 Lexus Code

1. What are the common symptoms of OBDII code P0332 in a Lexus related to Knock Sensor 2 Circuit Low Input?

- Common symptoms include reduced engine performance, engine knocking or pinging noises, and in some cases, the Check Engine light may illuminate.

2. What are the potential causes of the Knock Sensor 2 Circuit Low Input code (P0332) in a Lexus?

- The code may be triggered by a faulty knock sensor, damaged wiring or connectors related to the knock sensor, or engine mechanical problems causing abnormal noises.

3. How does a faulty knock sensor affect the performance of a Lexus with OBDII code P0332?

- A faulty knock sensor can lead to incorrect engine timing adjustments, decreased fuel efficiency, and potential engine damage due to detonation.

4. What steps can be taken to diagnose and repair OBDII code P0332 related to Knock Sensor 2 Circuit Low Input in a Lexus?

- Diagnosis typically involves checking the knock sensor and its wiring for damage, testing the sensor's resistance, and inspecting the engine for signs of mechanical issues. Repair may involve replacing the knock sensor or repairing/replacing damaged wiring.

5. Can driving a Lexus with OBDII code P0332 (Knock Sensor 2 Circuit Low Input) cause further damage to the vehicle?

- Continuing to drive with this code may lead to reduced engine performance, decreased fuel efficiency, and potential long-term engine damage if the underlying issue is not addressed promptly.

6. Is it safe to ignore OBDII code P0332 in a Lexus if the vehicle is still running normally?

- Ignoring the code can lead to decreased engine performance and potential damage over time. It is recommended to address the underlying issue to prevent further problems.

7. How can a Lexus owner prevent OBDII code P0332 related to Knock Sensor 2 Circuit Low Input from occurring?

- Regular maintenance, including checking and replacing the knock sensor at recommended intervals, can help prevent the occurrence of this code.

8. Are there any temporary solutions or quick fixes for OBDII code P0332 in a Lexus?

- Temporary solutions like clearing the code may temporarily turn off the Check Engine light, but the underlying issue causing the code will still need to be addressed for long-term reliability.

9. Can a DIY enthusiast with basic automotive knowledge repair OBDII code P0332 in a Lexus themselves?

- Depending on the cause, a DIY enthusiast may be able to replace the knock sensor or address wiring issues themselves. However, proper diagnosis and repair are recommended to ensure the issue is fully resolved.

10. How long does it typically take to repair OBDII code P0332 (Knock Sensor 2 Circuit Low Input) in a Lexus at a professional auto repair shop?

- The repair time can vary depending on the exact cause of the code and the availability of parts. In general, it may take a few hours to a full day for a professional technician to diagnose and repair the issue.