What does code P0302 mean on a Hyundai and is it safe to drive?
P0302: Cylinder 2 Misfire Detected. Here's what it means on your Hyundai, what usually causes it, what repairs typically cost, and how safe it is to keep driving.
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What this code means
The PCM has detected a misfire on cylinder 2. Same logic as P0301, but for a different cylinder.
Common causes for your Hyundai
- Worn or fouled spark plug on cylinder 2
- Failing ignition coil
- Leaking or clogged fuel injector
- Low compression on cylinder 2
Symptoms
- Check Engine Light
- Noticeable shaking, especially at idle
- Loss of power or hesitation
Typical fixes
- Replace spark plug/coil on cylinder 2
- Clean or replace injector
- Address internal engine problems if compression is low
Repair cost range
For a Hyundai, repairs for P0302 often fall between $150 and $900, depending on the cause and whether you use OEM or aftermarket parts. Labor rates vary by location.
Known issues on Hyundai
On Hyundai GDI engines, cylinder 2 carbon buildup is as common as cylinder 1. If coil swap testing doesn't reveal a coil fault, perform a compression test on cylinder 2 to rule out valve sealing issues before committing to an intake valve cleaning.
Most commonly affected models
Sonata Theta-II 2011–2019Santa Fe GDI 2013–2018Elantra 1.8L 2011–2016