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P0306 2016 Chevrolet Silverado Code - Cylinder 6 Misfire Detected

Quick Answer

The diagnostic trouble code P0306 for a 2016 Chevrolet Silverado indicates that a misfire has been detected in cylinder 6 of the engine. Common causes include Faulty spark plug in cylinder 6, Failing ignition coil specific to cylinder 6, Clogged or malfunctioning fuel injector for cylinder 6. 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
P0306 2016 Chevrolet Silverado indicates Cylinder 6 Misfire Detected.
Common causes
Common causes include Faulty spark plug in cylinder 6, Failing ignition coil specific to cylinder 6, Clogged or malfunctioning fuel injector for cylinder 6.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 30, 2024
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Code P0306 2016 Chevrolet Silverado Description

The diagnostic trouble code P0306 for a 2016 Chevrolet Silverado indicates that a misfire has been detected in cylinder 6 of the engine. This means that the fuel-air mixture in that particular cylinder is not igniting properly, leading to a disruption in the combustion process. This can result in a rough idle, decreased engine performance, reduced fuel efficiency, and potential damage to the catalytic converter over time.

OBDII Code P0306 2016 Chevrolet Silverado - Cylinder 6 Misfire Detected
P0306 2016 Chevrolet Silverado Code - Cylinder 6 Misfire Detected

Common Causes of P0306 2016 Chevrolet Silverado

  1. Faulty spark plug in cylinder 6.
  2. Failing ignition coil specific to cylinder 6.
  3. Clogged or malfunctioning fuel injector for cylinder 6.
  4. Vacuum leak affecting cylinder 6.
  5. Low compression in cylinder 6.

Symptoms of P0306 2016 Chevrolet Silverado

  1. Rough idle or vibrations while the engine is running.
  2. Loss of power or acceleration.
  3. Engine misfiring or hesitation during acceleration.
  4. Increased fuel consumption.
  5. Check engine light illuminated on the dashboard.

How to Fix P0306 2016 Chevrolet Silverado

  1. Begin by diagnosing the specific cause of the misfire in cylinder 6 using a scan tool to identify the problem component.
  2. Replace the faulty spark plug in cylinder 6 with a new one.
  3. Test and, if necessary, replace the ignition coil for cylinder 6.
  4. Clean or replace the fuel injector for cylinder 6 to ensure proper fuel delivery.
  5. Check for and repair any vacuum leaks that may be affecting cylinder 6.

Cost to Fix P0306 2016 Chevrolet Silverado

The cost of repairing a misfire in cylinder 6 of a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue and the cost of parts and labor in your area. On average, you can expect to pay between $150 and $300 for parts such as spark plugs, ignition coils, or fuel injectors. Labor costs can range from $100 to $300, with total repair costs typically falling between $250 and $600. It's important to note that prices may vary based on location, the auto repair shop's rates, and the availability of parts. Be sure to consult with a qualified mechanic for an accurate estimate tailored to your situation.

What does this mean?

Tech Notes for P0306 2016 Chevrolet Silverado

The P0306 code means that cylinder 6 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 6. If the problem persists more tests need to be done to diagnose the problem, see "Possible Causes".



There is a Factory Service Bulletins for All 2000-2020 Chevrolet Models:

2000-2020 Chevrolet Factory Service Bulletin OBDII Code P0306

This Factory Service Bulletin explains how this condition may be caused by significant carbon build-up on the intake and/or exhaust valves due to fuel contamination or incomplete burning of the fuel.

Need more information about the P0306 2016 Chevrolet Silverado code?

Need more information on how to fix the P0306 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 P0306 2016 Chevrolet Silverado Code

1. What does the OBD-II code P0306 mean on a 2016 Chevrolet Silverado?

P0306 indicates a misfire has been detected in cylinder 6 of the engine.

2. What are the common symptoms of a P0306 code in a 2016 Chevrolet Silverado?

Symptoms may include a rough idle, reduced engine performance, poor fuel economy, hesitation during acceleration, and the Check Engine Light being illuminated.

3. What causes a P0306 code in a 2016 Chevrolet Silverado?

Common causes include a faulty spark plug, ignition coil failure, a clogged fuel injector, low compression in cylinder 6, or intake manifold gasket leaks.

4. Can I drive my 2016 Chevrolet Silverado with a P0306 code?

Driving with a P0306 code is not recommended, as it can lead to further engine damage and decreased performance.

5. How can I diagnose a P0306 code on my 2016 Chevrolet Silverado?

Start by inspecting the spark plug, ignition coil, and fuel injector for cylinder 6. A compression test or leak-down test may also be necessary to check for internal engine issues.

6. How do I fix the P0306 code on my 2016 Chevrolet Silverado?

Repairs may involve replacing the spark plug, ignition coil, or fuel injector for cylinder 6. In some cases, addressing intake manifold gasket leaks or internal engine issues may be required.

7. Can a dirty fuel injector cause a P0306 code in a 2016 Chevrolet Silverado?

Yes, a clogged or malfunctioning fuel injector can disrupt fuel delivery to cylinder 6 and cause a misfire.

8. How much does it cost to fix a P0306 code on a 2016 Chevrolet Silverado?

Repair costs vary depending on the cause, ranging from $100 to $300 for spark plug or ignition coil replacement, and higher if internal engine repairs are required.

9. Could a vacuum leak trigger a P0306 code on a 2016 Chevrolet Silverado?

Yes, a vacuum leak near cylinder 6 can cause a lean air-fuel mixture, leading to a misfire and triggering the P0306 code.

10. How do I prevent a P0306 code on my 2016 Chevrolet Silverado?

Regular maintenance, such as replacing spark plugs and ignition coils as needed and using quality fuel, can help prevent misfires and the P0306 code.

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