Severity: Fix right away. Driving risks expensive damage or a breakdown.
The computer detected a misfire during the first 1,000 engine revolutions after starting, which points to a cold-start problem rather than a running problem.
Check spark plugs and coils first, then fuel pressure and vacuum leaks.
A startup misfire can damage the catalytic converter if it keeps happening. Get it checked soon.
Avoid driving until it is checked — towing is the safer choice. A startup misfire can damage the catalytic converter if it keeps happening. Get it checked soon.
The most common causes are: Worn spark plugs; Failing ignition coil; Low fuel pressure on startup; Vacuum leak; Dirty fuel injector. A scan tool and a visual check of the parts above is where a technician starts.
Check spark plugs and coils first, then fuel pressure and vacuum leaks.
