Fiat Diagnostic Trouble Codes

Common OBD2 fault codes found on Fiat vehicles with model-specific causes, known issues, TSBs, and adjusted repair cost estimates. Each guide is tailored for Fiat owners.

Misfire

P0303High

Cylinder 3 Misfire Detected

Fiat 500 • 2007-2024

The 0.9 TwinAir 2-cylinder does not have a cylinder 3, but the 1.2 Fire and 1.4 MultiAir 4-cylinder ...

Electrical

P0500Moderate

Vehicle Speed Sensor "A" Malfunction

Fiat Punto • 2005-2018

The Punto Grande and Punto Evo use a magnetic pickup speed sensor on the gearbox. These sensors are ...

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