Cylinder 2 Misfire Detected
Plain-English meaning
The engine control module (ECM) has detected a misfire in cylinder number 2, indicating that the fuel-air mixture in that cylinder is not igniting properly.
What to check first
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What not to replace yet
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Stop driving when
If the engine runs very rough, stalls frequently, or if there is a strong smell of fuel or unburned gasoline, stop driving and have the vehicle inspected promptly to avoid damage or safety risks.
Related symptoms
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Owner steps
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Likely causes
Faulty spark plug in cylinder 2 (medium)
Defective ignition coil or ignition wire for cylinder 2 (medium)
Fuel injector malfunction or clog in cylinder 2 (medium)
Vacuum leak near cylinder 2 (medium)
Low fuel pressure or fuel delivery issues (medium)
Compression problems in cylinder 2 (e.g., worn piston rings, valves) (medium)
Wiring or connector issues related to ignition or fuel injector (medium)
Faulty ECM (rare) (medium)
Shop steps
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Follow-up questions
When did you first notice the engine running rough or loss of power?
Have you recently performed any maintenance on the ignition or fuel system?
Is there any unusual noise or smell coming from the engine?
Has the Check Engine Light been on continuously or intermittently?
Have you noticed any changes in fuel consumption or emissions?