P0306 2015 Chevrolet Silverado Code - Cylinder 6 Misfire Detected
Quick Answer
A misfiring cylinder causes slight variations in the rotational speed of the crankshaft. Common causes include Faulty spark plug 6, Clogged or faulty fuel injector 6, Faulty ignition coil 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 2015 Chevrolet Silverado indicates Cylinder 6 Misfire Detected.
- Common causes
- Common causes include Faulty spark plug 6, Clogged or faulty fuel injector 6, Faulty ignition coil 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.
Code P0306 2015 Chevrolet Silverado Description
What are the Possible Causes of the DTC P0306 2015 Chevrolet Silverado?
- Faulty spark plug 6
- Clogged or faulty fuel injector 6
- Faulty ignition coil 6
- Fuel injector 6 harness is open or shorted
- Fuel injector 6 circuit poor electrical connection
- Ignition coil 6 harness is open or shorted
- Ignition coil 6 circuit poor electrical connection
- Insufficient cylinder 6 compression
- Incorrect fuel pressure
- Intake air leak
How to Fix the DTC P0306 2015 Chevrolet Silverado?
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.
Code Tech Notes
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0306 2015 Chevrolet Silverado 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 P0306 2015 Chevrolet Silverado code?
Need more information on how to fix the P0306 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
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Frequently Asked Questions about P0306 2015 Chevrolet Silverado Code
What does OBDII code P0306 mean on a 2015 Chevrolet Silverado?
P0306 indicates that the engine's onboard diagnostics system has detected a misfire in cylinder 6.
What are the common symptoms of a P0306 code in a 2015 Chevrolet Silverado?
Symptoms may include rough idling, reduced engine power, poor fuel economy, hesitation during acceleration, and the check engine light turning on.
What causes a P0306 code in a 2015 Chevrolet Silverado?
Common causes include a faulty spark plug, ignition coil, fuel injector, vacuum leak, low engine compression, or issues with the cylinder's wiring or connectors.
Can I drive my 2015 Chevrolet Silverado with a P0306 code?
Driving with a P0306 code is not recommended as it can cause further engine damage, reduced performance, and unsafe driving conditions.
How do I diagnose the P0306 code on my 2015 Chevrolet Silverado?
Start by inspecting the spark plug and ignition coil for cylinder 6, checking fuel injector functionality, and testing for vacuum leaks or low compression in the cylinder.
What tools are needed to diagnose a P0306 code?
You’ll need an OBDII scanner, a spark plug socket, a multimeter, a vacuum gauge, and potentially a compression tester.
How do I fix a P0306 code on a 2015 Chevrolet Silverado?
Repairs may include replacing the spark plug or ignition coil for cylinder 6, cleaning or replacing the fuel injector, repairing vacuum leaks, or addressing compression issues.
Can a dirty air filter cause a P0306 code?
While unlikely, a severely clogged air filter can contribute to engine performance issues that may indirectly cause misfires.
How much does it cost to fix a P0306 code on a 2015 Chevrolet Silverado?
Repair costs can range from $50 for a spark plug replacement to $500+ if extensive repairs like fixing low compression are needed.
Can bad fuel cause a P0306 code?
Yes, contaminated or low-quality fuel can cause misfires, including in cylinder 6, as it may affect proper combustion.
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