Engine

P0316 — Misfire Detected During First 1000 Revolutions After Startup

Severity: medium Drive with care, to a shop

What P0316 means

The engine control module watches crankshaft speed for uneven rotation that signals a misfire. If it detects misfires in one or more cylinders during the first 1000 revolutions after startup, it sets P0316. The problem often shows up on a cold engine and may fade once the engine warms up.

Symptoms

  • Check Engine Light on
  • Rough idle right after starting
  • Hesitation or stumbling when pulling away
  • Hard starting or uneven running in the first seconds
  • Brief stall before idle stabilizes
  • Rough cold start that smooths out when warm
  • Loss of power; flashing light under load

Possible causes

  1. Worn or fouled spark plugs
  2. Faulty ignition coil or moisture in the coil boot
  3. Weak battery or low voltage while cranking
  4. Fuel delivery problems such as low pressure or clogged injectors
  5. Crankshaft position sensor signal problems
  6. Vacuum leak leaning out the mixture
  7. Low compression in one cylinder

How to diagnose

  1. Read all codes and freeze frame data, noting temperature and start conditions. Check for P0301–P0308
  2. View per-cylinder misfire counters if the scan tool supports it
  3. Test the battery and cranking voltage
  4. Inspect spark plugs and coils, and check boots for moisture or cracks
  5. Swap a coil or plug with another cylinder and see if the misfire follows
  6. Test fuel pressure and how well it holds after shutoff
  7. Check injector operation and look for vacuum leaks
  8. If electrical checks pass, run a compression test

Common fixes

  • Replace spark plugs
  • Replace faulty ignition coils or boots
  • Replace the battery or repair the charging system
  • Fix fuel delivery: clean or replace injectors, correct pressure loss
  • Replace the crankshaft position sensor or repair its wiring
  • Repair vacuum leaks

P0316 on different brands

Ford · manuals
Ford documents P0316:00 in its 2024-2025 gasoline engine monitor strategy as a misfire during the first 1000 revolutions after startup; it identifies the detected condition, not a confirmed failed component.

Questions and answers

What does P0316 mean?

It means the engine computer detected a misfire during the first 1000 revolutions after startup. The cause can be ignition, fuel, battery voltage or a mechanical issue.

Can I drive with code P0316?

Briefly, if the light is steady and the engine runs reasonably smoothly. If the light flashes, stop driving to avoid damaging the catalytic converter.

Why does it only happen on a cold start?

A worn plug, weak coil or moisture in a coil boot is more noticeable on a cold engine. The engine may run smoothly once warm, but the fault is still there.

This is general information about the code. The meaning can differ between makes and models: a scan tool and the repair manual for your car will show the exact cause.