2023 Hyundai P0305: What It Means & Is It Safe to Drive?
P0305 on the 2023 Hyundai: Cylinder 5 Misfire Detected. Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
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What this code means
Misfire on cylinder 5—present on V6, V8, and inline-5 engines only. On V6 engines, cylinder 5 is sometimes harder to access; factor labor into repair estimates.
Common causes on the 2023 Hyundai
- Fouled spark plug
- Failed ignition coil
- Leaking or clogged injector
- Low compression from valve or ring wear
Symptoms
- Check Engine Light
- Engine shaking or rough idle
- Power loss under acceleration
Typical fixes
- Replace spark plug and coil on cylinder 5
- Test and replace injector if needed
- Compression and leak-down test
Repair cost range
For a 2023 Hyundai, repairs for P0305 typically fall between $150 and $1000, depending on the root cause and labor rates in your area.
Known issues on Hyundai
Hyundai Lambda V6 engines are generally reliable with coils, but P0305 can occur from connector corrosion on the rear bank. On the Genesis sedan, cylinder 5 is on the passenger-side bank and more exposed to heat—inspect the coil boot for carbon tracking.
Most commonly affected models
Santa Fe V6 3.3L 2007–2012Azera 3.3L 2006–2011Genesis 3.8L 2009–2014