P0305 - Cylinder 5 Misfire Detected
P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
P2314 - Ignition Coil E Secondary Circuit
Runs rough, and shakes at idol;
“Stutters” (stalls but recovers) when you mash the accelerator too fast;
I Changed the coil and plug on cylinder 5. The Same codes and symptoms persist.