Cylinder 5 Misfire Detected
28 articles · 8 makes affected
What is P0305?
P0305 is a critical powertrain code indicating the engine's computer has detected a misfire specifically in cylinder 5. This means the air-fuel mixture in that cylinder is not burning properly, which can damage the catalytic converter and other components if driven for long. Based on real owner data, this code is most frequently reported in Ford Mustangs, Acura TLs, and Jeep Wranglers.
Common Causes
- ●Faulty spark plugs or ignition coils (commonly mentioned in owner maintenance discussions)
- ●Fuel delivery issues to cylinder 5
- ●Mechanical engine problems like low compression
Symptoms You May Notice
- ●Check Engine Light is illuminated
- ●Engine runs rough, shakes, or lacks power
- ●Poor fuel economy and increased emissions
How to Fix It
- ●Replace spark plugs and ignition coils for cylinder 5 ($100-$400, moderate difficulty)
- ●Diagnose and repair fuel injector or fuel delivery issues ($150-$800, moderate difficulty)
- ●Perform engine compression test and address mechanical failures (cost varies widely, high difficulty)
Owner Statistics
Based on 188,026 real owner discussions • 5340 confirmed solutions
About This Data
Statistics are aggregated from real owner discussions on Reddit, automotive forums, and YouTube comments. All data is anonymized and represents actual repair experiences reported by vehicle owners.
Frequently Appears With
These codes often appear together in owner reports. Check these if you see P0305.
- P04556 reports
- P03006 reports
- P03522 reports
- P04422 reports
- P03032 reports
- P03012 reports
- P00182 reports
- P01712 reports
Based on analysis of 24 owner reports where multiple codes appeared together.