Common Checks
- Check for companion P0300-P0308 codes.
- Inspect ignition coils, plugs, fuel pressure, and cold-start vacuum leaks.
- Review whether the concern happens only after rain, heat soak, or overnight parking.
Diagnostic trouble code
P0316 Misfire Detected on Startup
The PCM detects a misfire soon after engine start.
Misfire CodesCommon Repairs
- Repair the cylinder-specific fault shown by companion codes.
- Replace weak ignition parts or repair cold-start air/fuel faults confirmed by testing.
Mustang Notes
- Startup-only misfires often need freeze-frame and misfire counter review before parts replacement.
Model-Year Applicability
Listed for 1996 and newer traditional gasoline Mustang pages in this first-pass catalog. Engine, calibration, and Ford-specific codes may narrow that range as more service data is added.