Ford F-150 rough idle at cold startup, recurring issue despite dealership resets on Ford F-150

Some Ford F-150 owners report experiencing a rough idle during cold startup, which can present as sputtering or misfires, even when no misfire codes are logged. This issue is common among models from 2015 to 2020, and some owners have encountered difficulties with dealership services in diagnosing and resolving these rough idle problems. While a rough idle may be considered normal behavior as the Engine Control Module (ECM) adjusts settings to warm up the catalytic converters, some owners find that the idle remains unstable despite attempts to reset it at the dealership. Additionally, the Powertrain Control Module (PCM) plays a role in managing air intake and idle speed during cold starts, but if the rough idle persists or worsens, further diagnostics or consultations with experienced mechanics may be necessary for effective resolution.