P0302 2017 Chevrolet Silverado Code - Cylinder 2 Misfire Detected
Quick Answer
A misfiring cylinder causes slight variations in the rotational speed of the crankshaft. Common causes include Faulty Spark Plug #2, Clogged or faulty Fuel Injector #2, Faulty Ignition Coil #2. 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
- P0302 2017 Chevrolet Silverado indicates Cylinder 2 Misfire Detected.
- Common causes
- Common causes include Faulty Spark Plug #2, Clogged or faulty Fuel Injector #2, Faulty Ignition Coil #2.
- 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 P0302 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC P0302 2017 Chevrolet Silverado?
- Faulty Spark Plug #2
- Clogged or faulty Fuel Injector #2
- Faulty Ignition Coil #2
- Fuel Injector #2 harness is open or shorted
- Fuel Injector #2 circuit poor electrical connection
- Ignition Coil #2 harness is open or shorted
- Ignition Coil #2 circuit poor electrical connection
- Insufficient cylinder 2 compression
- Incorrect fuel pressure
- Intake air leak
How to Fix the DTC P0302 2017 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 P0302
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 P0302 2017 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 P0302 2017 Chevrolet Silverado code?
Need more information on how to fix the P0302 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
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Frequently Asked Questions about P0302 2017 Chevrolet Silverado Code
1. What does the OBDII code P0302 mean on a 2017 Chevrolet Silverado?
P0302 indicates a misfire has been detected in cylinder 2, meaning the engine's computer has identified an issue with the combustion process in that specific cylinder.
2. What are the common symptoms of a P0302 code in a 2017 Chevrolet Silverado?
Symptoms may include rough idling, reduced engine performance, poor fuel economy, hesitation during acceleration, and the Check Engine Light being illuminated.
3. What causes a cylinder 2 misfire in a 2017 Chevrolet Silverado?
Common causes include a faulty spark plug, a bad ignition coil, a clogged fuel injector, low cylinder compression, or issues with the fuel system such as a failing fuel pump.
4. Can a dirty or faulty spark plug cause a P0302 code?
Yes, a dirty, worn-out, or damaged spark plug in cylinder 2 can fail to ignite the air-fuel mixture properly, leading to a misfire and triggering the P0302 code.
5. How can I diagnose a P0302 code in my 2017 Chevrolet Silverado?
Start by inspecting the spark plug and ignition coil for cylinder 2, checking for damage or wear. You can also test the fuel injector, check for vacuum leaks, and perform a compression test on cylinder 2.
6. Can driving with a P0302 code damage my 2017 Chevrolet Silverado?
Yes, driving with a misfire can cause further engine damage, such as overheating the catalytic converter or damaging internal components, and should be addressed promptly.
7. How do I fix a P0302 code on a 2017 Chevrolet Silverado?
Repairs might include replacing the spark plug or ignition coil for cylinder 2, cleaning or replacing the fuel injector, fixing vacuum leaks, or addressing low compression if present.
8. Is a fuel injector problem a common cause of the P0302 code?
Yes, a clogged or faulty fuel injector in cylinder 2 can disrupt the proper air-fuel mixture, leading to a misfire and triggering the P0302 code.
9. How much does it cost to repair a P0302 code on a 2017 Chevrolet Silverado?
The cost can vary widely depending on the cause, ranging from $50-$150 for a spark plug replacement to $200-$500 or more for fuel injector or ignition coil repairs.
10. Can a vacuum leak cause the P0302 code in a 2017 Chevrolet Silverado?
Yes, a vacuum leak near cylinder 2 can create an air-fuel imbalance, leading to a misfire and triggering the P0302 code.
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