2K views · 25 reactions | Have a cold start rough idle? Do you have a check engine light giving codes P050D or P219A? These codes can both appear when there are problems with your ignition system, or if your direct injected engine has carbon buildup on the intake valves. In this video, Andy shows you how to diagnose the problems triggering these codes, starting with the simplest test you can do yourself. | 1A Auto Parts | Facebook

GM OBD1 code 12? It means your engine's RPM signal isn’t detected during cranking. Common causes include a faulty crankshaft position sensor, defective wiring, or a malfunctioning ignition module. Haynes Manuals helps you diagnose and fix the problem step by step. Find your GM manual today at haynes.com. #HaynesManuals #HaynesShowsYouHow #GMRepair | Haynes Manuals