Fiat 500 and Punto engine management ECU malfunctions are common causes of power loss and intermittent to permanent misfire.
When performing diagnostic checks, you will find one or more cylinder/ignition coil fault codes stored in your engine management ECU.
These issues are often caused by a faulty coil pack on the vehicle, so Tim’s going to show you how to test for coil pack misfire issues…

Common Failure symptoms:
• Loss of power
• Misfire
• Engine management light

Common fault codes:
• P0300 – Random Cylinder Misfire Detected
• P0301 – Cylinder 1 Misfire Detected / Ignition Failure
• P0302 – Cylinder 2 Misfire Detected / Ignition Failure
• P0303 – Cylinder 3 Misfire Detected / Ignition Failure
• P0304 – Cylinder 4 Misfire Detected / Ignition Failure
• P0351 – Ignition Coil A Primary/Secondary Circuit Malfunction
• P0352 – Ignition Coil B Primary/Secondary Circuit Malfunction
• P0353 – Ignition Coil C Primary/Secondary Circuit Malfunction
• P0354 – Ignition Coil D Primary/Secondary Circuit Malfunction

Affected Vehicles:
• Fiat 500 (2007 – 2019)
• Fiat Punto (2012 – 2018)

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