P0302 Hyundai Code - Cylinder 2 Misfire Detected
Quick Answer
When a misfire occurs, engine speed will fluctuate. 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 Hyundai 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 Hyundai Description
What are the Possible Causes of the DTC P0302 Hyundai?
- 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 Hyundai?
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
User Submitted Video
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0302 Hyundai 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.
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Frequently Asked Questions about P0302 Hyundai Code
1. What does the OBDII code P0302 mean for a Hyundai?
P0302 indicates a misfire has been detected in cylinder 2 of the engine, which means the combustion process is not occurring properly in that cylinder.
2. What are the common symptoms of code P0302 on a Hyundai?
Symptoms include rough idling, engine hesitation, reduced fuel efficiency, loss of power, and possibly an illuminated check engine light.
3. Can I drive my Hyundai with a P0302 code?
While the vehicle may still be drivable, it is not recommended due to potential engine damage, reduced performance, and increased emissions.
4. What are the common causes of a P0302 code on a Hyundai?
Common causes include a faulty spark plug, ignition coil, fuel injector, vacuum leaks, or low cylinder compression on cylinder 2.
5. How do I diagnose a P0302 code on my Hyundai?
Diagnosis involves inspecting the spark plug, ignition coil, and fuel injector for cylinder 2, checking for vacuum leaks, and performing a compression test.
6. How can I fix a P0302 code on a Hyundai?
Repairs may include replacing the spark plug, ignition coil, or fuel injector for cylinder 2, repairing vacuum leaks, or addressing engine mechanical issues.
7. How much does it cost to repair a Hyundai with a P0302 code?
The cost varies based on the cause, ranging from $50–$150 for a spark plug or ignition coil replacement to higher costs for fuel injector or engine repairs.
8. Can a dirty fuel injector cause a P0302 code?
Yes, a clogged or malfunctioning fuel injector can prevent proper fuel delivery to cylinder 2, leading to a misfire.
9. Will a P0302 code affect my Hyundai’s fuel economy?
Yes, a misfiring cylinder can cause decreased fuel efficiency due to incomplete combustion and wasted fuel.
10. What happens if I ignore a P0302 code on my Hyundai?
Ignoring the code can lead to further engine damage, increased emissions, and potentially expensive repairs if the root cause worsens.
Discuss the causes and fixes for P0302 Hyundai OBDII Code
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I have a 2004 Santa fe with a P0302 code. I've replaced plugs wires and coil pack no change checked injector voltage and replaced injector still no change. runs ok at idle. under acceleration is when it misfires.
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Let me check if I can find more information. What is the engine size of your Santa Fe?
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The spark plugs and ignition coils are by far the most common problems taht will set the P0302. Other than those components we have seen that sometimes the Positive Crankcase Ventilation (PCV) Valve could also set the code. I recommend replacing the PCV valve and ad fuel additive.
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Ok sorry for long delay .pcv valve didn't help. Any other suggestions?
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Here is a list of the most common compones that could set the code (ordered by incident number), according to a national database of repairs. I hope that helps.
- Ignition Coil - 126 times
- Spark Plug - 112
- Spark Plug Wire - 76
- Positive Crankcase Ventilation Valve - 54
- Spark Plug Seals - 15
- Ignition Boot - 13
- Ignition Failure Sensor - 4
- Engine Fuel System - 3
- Fuel Filter - 3 -
2020 Hyundai kona 2.0 awd. I need spark plugs position. Spark plugs # 1,2,3,4
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On your 2020 Hyundai Kona 2.0 AWD, the engine is an inline 4-cylinder, and the spark plugs are numbered from left to right when you're standing in front of the vehicle, looking at the engine. So it goes like this:
Cylinder 1 is on the passenger side, then 2, 3, and Cylinder 4 is on the driver’s side.
That means the order from passenger to driver side is: 1 – 2 – 3 – 4.Let me know if you're replacing them or troubleshooting—these engines are known for coil or plug issues around 60–100k miles.
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