2011 Lexus P0305: What It Means & Is It Safe to Drive?
P0305 on the 2011 Lexus: 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.
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 2011 Lexus
- 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 2011 Lexus, repairs for P0305 typically fall between $150 and $1000, depending on the root cause and labor rates in your area.
Known issues on Lexus
Lexus 2GR-FSE P0305 on rear-bank cylinder 5 is typically a failed COP coil. Access requires intake manifold removal. Confirm the fault before disassembly—a coil swap to the front bank confirms the misfire follows the coil. These engines are otherwise extremely reliable.
Most commonly affected models