Severity: Fix right away. Driving risks expensive damage or a breakdown.
The computer detected a misfire serious enough that it cut fuel to the misfiring cylinder to protect the catalytic converter from raw fuel.
Find and fix the underlying misfire first — usually a coil, plug, or injector — then clear the code.
The engine is running on fewer cylinders and the converter is at risk. Get it fixed before driving far.
Avoid driving until it is checked — towing is the safer choice. The engine is running on fewer cylinders and the converter is at risk. Get it fixed before driving far.
The most common causes are: Severe misfire from a failed coil or plug; Clogged injector; Low compression; Fuel system fault. A scan tool and a visual check of the parts above is where a technician starts.
Find and fix the underlying misfire first — usually a coil, plug, or injector — then clear the code.
