P0332 Chevy Silverado Code (Causes, Diagnosing & Repairing) 2024

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Chevrolet Silverado is known for its robust performance and reliability, p0332 Chevy Silverado, but like any vehicle, it’s not immune to occasional issues.

One such issue is encountering error codes, and one of the common ones is the P0332 code.

In this article, we’ll delve into what exactly the P0332 code means for your Chevy Silverado and how you can address it effectively.

p0332 chevy silverado

Symptoms of p0332 Chevy Silverado

When your Chevy Silverado encounters the P0332 code, it’s crucial to recognize the symptoms associated with it.

These symptoms may include:

Engine Misfires

One of the most noticeable signs of the P0332 code is engine misfires. You may experience a lack of smoothness in engine operation, leading to jerky acceleration and overall poor performance.

Rough Idle

Another symptom commonly associated with the P0332 code is a rough idle.

Your Silverado’s engine may struggle to maintain a steady RPM when idling, causing vibrations and instability.

Reduced Fuel Efficiency

The P0332 code can also impact your vehicle’s fuel efficiency. With engine misfires and rough idling, your Silverado may burn more fuel than usual, leading to decreased miles per gallon.

Causes of P0332 in Chevy Silverado

Understanding the underlying causes of the P0332 code is essential for effective troubleshooting. Some common causes include:

Faulty Knock Sensor

A malfunctioning knock sensor is often the primary culprit behind the P0332 code. The knock sensor detects abnormal engine vibrations, which helps the engine control module (ECM) adjust ignition timing accordingly.

When the knock sensor fails, it can’t properly detect these vibrations, leading to the P0332 code.

Wiring Issues

Wiring problems, such as frayed or damaged wires connected to the knock sensor, can also trigger the P0332 code.

These issues can disrupt the signal between the knock sensor and the ECM, resulting in erroneous readings and subsequent code activation.

Engine Timing Problems

Issues with engine timing, whether due to mechanical malfunctions or incorrect adjustments, can contribute to the P0332 code.

When the engine’s timing is off, it can lead to abnormal combustion events, triggering knock sensor readings and code activation.

Diagnosing P0332 in Chevy Silverado

Proper diagnosis is crucial for accurately pinpointing the cause of the P0332 code. Here are some steps to diagnose the issue effectively:

OBD-II Scanner Check

Using an OBD-II scanner, retrieve the trouble codes stored in your Silverado’s ECM.

The P0332 code should appear alongside any other related codes, providing valuable insight into the underlying issue.

Visual Inspection of Wiring

Inspect the wiring connected to the knock sensor for any signs of damage or wear. Look for frayed insulation, corroded connectors, or loose connections that may be affecting signal transmission.

Testing Knock Sensor

Perform a comprehensive test of the knock sensor using a multimeter or oscilloscope.

Measure its resistance and voltage output to determine if it’s functioning within the manufacturer’s specifications.

Repairing P0332 in Chevy Silverado

Once you’ve identified the cause of the P0332 code, it’s time to address it accordingly. Depending on the issue, repairs may involve:

Replacing Knock Sensor

If the knock sensor is found to be faulty, replace it with a new, OEM-approved unit. Ensure proper installation and calibration to restore optimal engine performance.

Repairing Wiring

Repair any damaged or corroded wiring connected to the knock sensor. Replace sections of wiring if necessary and secure all connections to prevent future issues.

Adjusting Engine Timing

If engine timing problems are detected, consult your Silverado’s service manual for proper adjustment procedures.

Follow manufacturer guidelines to ensure precise timing and optimal engine operation.

Preventive Measures for P0332 in Chevy Silverado

To minimize the risk of encountering the P0332 code in the future, consider implementing the following preventive measures:

  • Regular maintenance checks, including inspections of the knock sensor and related wiring.
  • Use high-quality fuel and engine oil to reduce the likelihood of engine knock and subsequent sensor issues.
  • Avoid aggressive driving habits that can increase engine stress and vibration.

People also ask

How do you fix the knock sensor code P0332?

To fix the knock sensor code P0332:

Identify the Knock Sensor: Locate the knock sensor in your vehicle’s engine bay. It’s typically found near the cylinder head or engine block.
Inspect Wiring: Check the wiring harness connected to the knock sensor for any signs of damage, corrosion, or loose connections.
Replace Knock Sensor: If the wiring is intact, replace the knock sensor with a new, OEM-approved unit. Ensure proper installation and secure connections.
Clear Error Codes: Use an OBD-II scanner to clear the error codes from the engine control module (ECM) memory.
Test Drive: Take your vehicle for a test drive to ensure the issue has been resolved and that the P0332 code does not reappear.

What does knock sensor 2 circuit low mean?

Knock Sensor 2 Circuit Low typically indicates a problem with the electrical circuit of the second knock sensor in the vehicle.

This could be due to issues such as damaged wiring, a faulty sensor, or poor electrical connections.

When the circuit registers a low voltage or resistance, it suggests a malfunction, potentially leading to engine performance issues.

Diagnosing and addressing this problem promptly is important to prevent further damage to the vehicle.

What causes knock sensor code?

The knock sensor code can be caused by various factors, including:

Engine detonation or knocking due to low-quality fuel or improper timing.
Faulty knock sensor resulting from wear and tear or electrical issues.
Wiring problems, such as frayed or damaged wires connected to the knock sensor.
Engine mechanical issues, such as excessive carbon buildup or worn-out components cause abnormal vibrations.

What is knock sensor Bank 2?

The knock sensor Bank 2 refers to the second bank of cylinders in a multi-bank engine configuration.

In vehicles with V6 or V8 engines, there are typically two banks of cylinders, each with its own set of sensors and components.

The knock sensor Bank 2 specifically monitors the cylinders in the second bank for any abnormal engine vibrations or detonation,

providing feedback to the engine control module (ECM) to adjust timing and prevent potential damage.


Encountering the P0332 code in your Chevy Silverado can be concerning, but with proper diagnosis and repair, you can address the issue effectively.

By understanding the symptoms, causes, and diagnostic procedures outlined in this article, you’ll be better equipped to keep your Silverado running smoothly for miles to come.

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