P0446 P0402 P0106 Fault Codes on 2007 Ford F-150 4.6L Engine - Misfire Diagnosis
Hello, this is my first time visiting the forum, so I appreciate any guidance. I recently purchased a 2007 Ford F-150 with a 4.6L engine that's experiencing a misfire. Using an OBD-II code reader, I've identified three diagnostic trouble codes: P0446, P0402, and P0106. I'm looking for clear explanations of what these codes mean and how they might be related to the misfire issue. Any insights or troubleshooting steps would be greatly appreciated. Thank you in advance for your time and expertise.
A vacuum leak is a common cause of engine misfires, so inspect all hoses, fittings, and connections related to the intake system. Below are relevant articles explaining each code: - P0106: http://www.obd-codes.com/p0106 - P0402: http://www.obd-codes.com/p0402 - P0446: http://www.obd-codes.com/p0446