× 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

P3040 Diagnostic Trouble Code Discussion for November 2021

Combustion Misfire of Cylinder 4

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 P3040
Help Request Posted
2013 Mercedes-Benz C250 1.8L MIL Lamp on VIN: WDDGF4HB8D
P3040: Combustion Misfire of Cylinder 4. Everything seemed straight forward with these two codes that are documented on this post. We replaced the camshaft position sensor and all of the spark plugs including # 4 ignition coil. We cleared the codes with the Mercedes Xentry tester and both codes c...
November 29, 2021