2020 Honda P0305: What It Means & Is It Safe to Drive?
P0305 on the 2020 Honda: 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 2020 Honda
- 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 2020 Honda, repairs for P0305 typically fall between $150 and $1000, depending on the root cause and labor rates in your area.
Known issues on Honda
Honda J35 V6 P0305 on cylinder 5 (front bank) is one of the more accessible coils and can be confirmed quickly with a coil swap. On the Odyssey J35A7, P0305 may accompany a VCM variable cylinder management issue—check for VCM disable codes alongside.
Most commonly affected models
Accord V6 J35 2003–2007Odyssey V6 J35 2005–2010Pilot J35 2003–2008