AutoCodes – Isuzu – P0333 Isuzu

P0333 Isuzu Code - Knock Sensor 2 Circuit High Voltage

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: P0333 Isuzu indicates Knock Sensor 2 Circuit High Voltage.
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 4,040

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0333 Isuzu 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 P0333 Isuzu - Knock Sensor 2 Circuit High Voltage - AutoCodes.com — P0333 Isuzu Code - Knock Sensor 2 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0333 Isuzu?

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 P0333 Isuzu?

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 P0333 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 P0333 Isuzu 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 P0333 Isuzu code?

Need more information on how to fix the P0333 Isuzu code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0333 Isuzu code diagnosed by a professional: Find a repair shop in your area

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 P0333 Isuzu Code

1. What are the common symptoms of OBDII code P0333 in an Isuzu related to the Knock Sensor 2 Circuit High Voltage?

- Common symptoms include engine pinging or knocking noises, reduced engine performance, and potentially increased fuel consumption.

2. What are the possible causes of the Knock Sensor 2 Circuit High Voltage fault code (P0333) in an Isuzu?

- Possible causes include a faulty knock sensor, wiring issues, poor electrical connections, or a problem with the engine control module (ECM).

3. How does a malfunctioning knock sensor affect the engine in an Isuzu vehicle?

- A malfunctioning knock sensor can lead to engine damage due to incorrect ignition timing, reduced engine efficiency, and potentially increased emissions.

4. Can driving with a P0333 fault code in an Isuzu cause further damage to the vehicle?

- Continuing to drive with a P0333 fault code can potentially cause damage to the engine over time, as it may lead to poor performance and inefficient combustion.

5. What steps can be taken to diagnose the Knock Sensor 2 Circuit High Voltage issue in an Isuzu with the OBDII code P0333?

- Diagnosing the issue usually involves checking the knock sensor and its wiring for damage, testing the sensor's resistance, and inspecting the ECM for any faults.

6. Is it possible to repair the Knock Sensor 2 Circuit High Voltage problem in an Isuzu without professional help?

- While some DIY enthusiasts may be able to replace a faulty knock sensor themselves, diagnosing and repairing wiring or ECM issues may require professional assistance.

7. Are there any temporary fixes or workarounds for the P0333 code related to the knock sensor in an Isuzu?

- Temporary fixes like clearing the fault code may temporarily mask the issue, but it's crucial to address the root cause promptly to prevent further problems.

8. How critical is it to address the P0333 fault code related to the Knock Sensor 2 Circuit High Voltage in an Isuzu promptly?

- It's essential to address the P0333 fault code promptly to prevent potential engine damage, maintain optimal performance, and ensure fuel efficiency.

9. Can environmental factors or rough driving conditions trigger the P0333 fault code in an Isuzu even if the knock sensor is functioning correctly?

- Extreme conditions like severe engine knocking or prolonged exposure to high temperatures can potentially trigger the P0333 fault code, even if the knock sensor is in good condition.

10. What is the typical cost range for repairing the Knock Sensor 2 Circuit High Voltage issue causing the P0333 code in an Isuzu?

- The cost of repairing the Knock Sensor 2 Circuit High Voltage issue can vary depending on the exact cause, but it may range from $150 to $500 including parts and labor.