Engine-CodesChevrolet – P0305 2017 Chevrolet Silverado

P0305 2017 Chevrolet Silverado Code - Cylinder 5 Misfire Detected

Quick Answer

The diagnostic trouble code P0305 for a 2017 Chevrolet Silverado indicates that there is a misfire detected in cylinder 5 of the engine. Common causes include Faulty spark plugs, Failing ignition coils, Clogged fuel injectors. 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
P0305 2017 Chevrolet Silverado indicates Cylinder 5 Misfire Detected.
Common causes
Common causes include Faulty spark plugs, Failing ignition coils, Clogged fuel injectors.
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.
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0305 2017 Chevrolet Silverado Description

The diagnostic trouble code P0305 for a 2017 Chevrolet Silverado indicates that there is a misfire detected in cylinder 5 of the engine. A misfire occurs when the fuel-air mixture in a cylinder fails to ignite at the proper time, causing a disruption in the engine's smooth operation. This can lead to a variety of issues, including reduced performance, decreased fuel efficiency, and potential damage to the catalytic converter over time.

OBDII Code P0305 2017 Chevrolet Silverado - Cylinder 5 Misfire Detected
P0305 2017 Chevrolet Silverado Code - Cylinder 5 Misfire Detected

Common Causes of P0305 2017 Chevrolet Silverado

  1. Faulty spark plugs
  2. Failing ignition coils
  3. Clogged fuel injectors
  4. Vacuum leaks
  5. Low compression in cylinder 5

Symptoms of P0305 2017 Chevrolet Silverado

  1. Engine runs rough or shakes
  2. Loss of power or acceleration
  3. Rough idling or stalling
  4. Increase in fuel consumption

How to Fix P0305 2017 Chevrolet Silverado

  1. Diagnose the issue using a scan tool to confirm cylinder 5 misfire.
  2. Inspect and replace spark plugs if worn or fouled.
  3. Test ignition coils for proper operation and replace if necessary.
  4. Clean or replace clogged fuel injectors.
  5. Check for vacuum leaks and repair as needed.

Cost to Fix P0305 2017 Chevrolet Silverado

The cost of repairing a cylinder 5 misfire on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue and the labor rates in your area. On average, the parts for this repair, including spark plugs, ignition coils, and fuel injectors, can range from $100 to $300. The labor cost at an auto repair shop may be between $150 and $300, bringing the total repair cost to around $250 to $600. It is important to note that these are rough estimates, and actual costs may differ based on your location and the severity of the problem.

Tech Notes for P0305 2017 Chevrolet Silverado

The P0305 code means that cylinder 5 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 5. 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 P0305

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.

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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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