× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P0303 Diagnostic Trouble Code Discussion for July 2019

Cylinder 3 Misfire Detected


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0303
Help Request Posted
2006 Volkswagen Beetle 2.5 2.5L Poor Idle Quality, Stall, Misfire VIN: 3VWPW31C86
P0303: cyl. 3 misfire. Vehicle will run terrible after awhile, when it is running good we remove oil cap and it runs bad with lots of crankcase vacuum . When hose removed and plugged off at valve cover there is no crankcase vacuum and seems to run good. What is normal crankcase ...
July 10, 2019
2012 Volkswagen Jetta GLI 2.0L Misfire VIN: 3VW5A7AJ6C
P0303: cyl three missfire. ... intake valves bent. I was provided a replacement engine to install. the problem happens off idle it will idle smooth all day when I drive on the road or bring the rpms up to 1800 to 2000 the engine light will start flashing then the ecm will shut down ...
July 18, 2019