Decoding the PO305 Code A Comprehensive Guide to Cylinder 5 Misfire Troubleshooting

P0305 (Cylinder 5 Misfire Detected) Discussion of this trouble code among automotive professionals on iATN for April 2018. My P0305 this week is apparently from a leaking valve cover that soaked the plug cylinder. The minor oil leak has been going MANY thousands of ... I got the dreaded P0305 fifth cylinder misfire code. I replaced all three coil packs. I replaced all six spark plugs with Toyota OEM ... I keep getting diagnostic code P0305 (intermittent misfire on cylinder #5). I have replaced all spark plugs and coils, replaced the fuel injector for cylinder ... I scanned the car and got the P0305, misfire cylinder 5. I changed out all the spark plugs and cleared the code. The code came back on, so I changed the coil ... Chevy Impala P0305: Cylinder 5 - Misfire Detected | Drivetrain Resource. P0305 is a fairly common trouble code with the Chevy Impala. It's and ... I have a P0305 error code. The check engine light started blinking at low RPM's. The engine was shaking at these low RPM's as well. A P0305 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #5. A P0305 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #5. Pulled codes PO316 (misfire detected on startup - first 1000 revolutions) and PO305 (cylinder 5 misfire detected ) thank you in advance for your advice.