TIL a single misfire code can cost you 2 hours if you trust the scanner too much

Sean Reed · 2026-10-16T06:05:05.870885+00:00

Read on a shop forum that a P0301 on a 2015 F-150 is often just a coil, but I chased plugs and injectors before finding a chafed wire near the harness. Anyone else get burned by taking the code at face value instead of doing a quick wiggle test first?

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TIL a single misfire code can cost you 2 hours if you trust the scanner too much | Auto Mechanics - Chatter Central