Unleashing the Power of Knowledge The P0305 Code Demystified

Ran a tank of fuel system cleaner day 1. Issue: when accelerating onto the freeway Sunday it threw a p0305 code and began running rough at idle. The code is for cylinder 5 misfire but the car runs absolutely fine and shows no signs of misfire at all. I am curious if anyone had this issue or a similar ... 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. P0305 Code ... I received a cylinder 5 misfire code. I'm thinking coil and possibly spark plug are the most logical places to start. The fuel trim ... Cylinder 5 misfire could be a bad spark plug but most likely will be a bad coil for that cylinder. I would change it out. Sent ... Hi all, I have a 2018 Silverado with the 5.3L. As of this month, at 45000 miles, I've started having a sporadic cylinder 5 misfire. 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. It also has a knock sensor code but I wouldn't imagine the knock would cause the car to run rough. Thanks for any help. The P0305 code means that the cylinder 5 is misfiring or is randomly misfiring. Start by checking for intake leaks an if no leaks are found the next step is to ... The P-code (P0305) is a cylinder 5 misfire. Often, that's caused by a bad COP (coil on plug). The standard first diagnostic would be to swap the misfiring ...