Severity: Fix right away. Driving risks expensive damage or a breakdown.
The computer has detected that the engine is misfiring, but the misfire is jumping between cylinders instead of staying on one, so no single cylinder is to blame.
Start with spark plugs and coils, then check for vacuum leaks and fuel pressure. Clear the code and see if it returns.
A misfiring engine sends unburned fuel into the exhaust, which can overheat and destroy the catalytic converter. A flashing check-engine light means stop driving.
Avoid driving until it is checked — towing is the safer choice. A misfiring engine sends unburned fuel into the exhaust, which can overheat and destroy the catalytic converter. A flashing check-engine light means stop driving.
The most common causes are: Worn spark plugs or wires; Failing ignition coil; Vacuum leak; Low fuel pressure; Clogged fuel injector; Failing oxygen sensor; Stuck-open EGR valve. A scan tool and a visual check of the parts above is where a technician starts.
Start with spark plugs and coils, then check for vacuum leaks and fuel pressure. Clear the code and see if it returns.
