AutoCodes – Chevrolet – P0302 2014 Chevrolet Silverado

P0302 2014 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 2014 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.
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Code Popularity 2,438
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 21, 2022
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Code P0302 2014 Chevrolet Silverado Description

A misfiring cylinder causes slight variations in the rotational speed of the crankshaft. The Engine Control Module (ECM) can detect these variations by closely monitoring the crankshaft position sensor signal. The signals of the camshaft position sensors are used to determine which cylinder is misfiring. If the ECM detects a misfire rate sufficient to cause emission levels to exceed mandated standards, the Diagnostic Trouble Code (DTC) will be set. Under certain driving conditions, a misfire rate can be high enough to cause the catalytic converter to overheat, damaging the converter. The Malfunction Indicator Lamp (MIL) flashes when the converter is overheating, damaging conditions are present, and the DTC is set. The DTC will be set when the ECM detects a crankshaft rotation speed variation indicating a single-cylinder misfire rate sufficient to cause emissions levels to exceed mandated standards.
OBDII Code P0302 2014 Chevrolet Silverado - Cylinder 2 Misfire Detected - AutoCodes.com
P0302 2014 Chevrolet Silverado Code - Cylinder 2 Misfire Detected

What are the Possible Causes of the DTC P0302 2014 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 2014 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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0302 2014 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 2014 Chevrolet Silverado code?

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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 P0302 2014 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P0302 on a 2014 Chevrolet Silverado?

- The common symptoms of code P0302 include engine misfires, rough idling, loss of power, and potential stalling.

2. What does the OBDII code P0302 on a 2014 Chevrolet Silverado indicate?

- Code P0302 specifically points to a misfire detected in cylinder 2 of the engine.

3. What are the possible causes of a cylinder 2 misfire in a 2014 Chevrolet Silverado?

- Common causes of a cylinder 2 misfire can include faulty spark plugs, ignition coils, fuel injectors, vacuum leaks, or low compression in that cylinder.

4. How can I diagnose the source of a cylinder 2 misfire on my 2014 Chevrolet Silverado?

- To diagnose a cylinder 2 misfire, you can perform a compression test, check spark plugs and ignition coils, inspect fuel injectors, scan for additional trouble codes, and look for vacuum leaks.

5. Can driving with OBDII code P0302 on a 2014 Chevrolet Silverado cause further damage?

- Continuing to drive with a cylinder 2 misfire can potentially damage the catalytic converter and other engine components, leading to more costly repairs.

6. How can I repair OBDII code P0302 on my 2014 Chevrolet Silverado?

- Repairing code P0302 involves addressing the specific cause of the misfire, which may include replacing spark plugs, ignition coils, fuel injectors, or fixing vacuum leaks.

7. Is it safe to continue driving my 2014 Chevrolet Silverado with a cylinder 2 misfire?

- It is not recommended to drive with a cylinder 2 misfire as it can lead to poor engine performance, reduced fuel efficiency, and potential damage to other engine components.

8. How much does it typically cost to fix OBDII code P0302 on a 2014 Chevrolet Silverado?

- The cost to fix code P0302 can vary depending on the underlying issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Can a DIY enthusiast address OBDII code P0302 on a 2014 Chevrolet Silverado?

- Depending on the cause of the misfire, some DIY enthusiasts with the necessary tools and skills may be able to address code P0302 by replacing spark plugs, ignition coils, or other components.

10. How often does OBDII code P0302 occur in a 2014 Chevrolet Silverado?

- OBDII code P0302, indicating a cylinder 2 misfire, can occur sporadically or more frequently depending on the maintenance of the vehicle and driving conditions.

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