Engine-CodesChevrolet – P0333 2017 Chevrolet Silverado

P0333 2017 Chevrolet Silverado Code - Knock Sensor Circuit High Voltage Bank 2

Quick Answer

The P0333 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado refers to a Knock Sensor Circuit High Voltage Bank 2 issue. Common causes include Faulty knock sensor in Bank 2, Damaged or corroded knock sensor wiring, Issues with the engine control module (ECM). 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 2017 Chevrolet Silverado indicates Knock Sensor Circuit High Voltage Bank 2.
Common causes
Common causes include Faulty knock sensor in Bank 2, Damaged or corroded knock sensor wiring, Issues with the engine control module (ECM).
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.
Table of contents Created and updated by William Orellana on Sep 18, 2024
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Code P0333 2017 Chevrolet Silverado Description

The P0333 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado refers to a Knock Sensor Circuit High Voltage Bank 2 issue. The knock sensor is a crucial component in the engine management system that detects abnormal combustion, often referred to as engine "knocking" or "pinging." When the knock sensor detects these abnormal combustion events, it sends a signal to the engine control module (ECM) to adjust the ignition timing to prevent engine damage.

OBDII Code P0333 2017 Chevrolet Silverado - Knock Sensor Circuit High Voltage Bank 2
P0333 2017 Chevrolet Silverado Code - Knock Sensor Circuit High Voltage Bank 2

Common Causes of P0333 2017 Chevrolet Silverado

  1. Faulty knock sensor in Bank 2
  2. Damaged or corroded knock sensor wiring
  3. Issues with the engine control module (ECM)
  4. Engine mechanical problems causing abnormal combustion
  5. Poor quality fuel or incorrect fuel octane rating

Symptoms of P0333 2017 Chevrolet Silverado

  1. Illuminated check engine light on the dashboard
  2. Reduced engine power or performance
  3. Decreased fuel efficiency
  4. Engine knocking or pinging noises
  5. Rough idling or misfires

How to Fix P0333 2017 Chevrolet Silverado

  1. Begin by diagnosing the specific cause of the high voltage reading in Bank 2 using a scan tool to read live data and pinpoint the issue.
  2. Inspect the knock sensor wiring for any damage or corrosion, repairing or replacing any faulty wiring as needed.
  3. Test the knock sensor in Bank 2 for proper operation and replace it if it is found to be faulty.
  4. Check the engine control module (ECM) for any potential issues and reprogram or replace it if necessary.
  5. Clear the diagnostic trouble codes from the ECM and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0333 2017 Chevrolet Silverado

The typical repair costs for addressing a Knock Sensor Circuit High Voltage Bank 2 issue in a 2017 Chevrolet Silverado can range from $200 to $500, including parts and labor. However, it is important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor, with rates potentially higher in metropolitan areas or at dealerships and lower at independent shops. It is recommended to obtain local estimates for a more accurate cost assessment.

Tech Notes for P0333 2017 Chevrolet Silverado

The P0333 code means that the Knock Sensor is not working properly. Problems with the knock sensor will not cause engine performance problems. Replacing the knock sensor usually takes care of the problem.

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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.

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