The DTC code P1131 in a Fiat vehicle is a sign that the onboard computer has registered the following anomaly:
"Throttle Position (Narrow Range) Sensor Circuit Malfunction"
Although this is a standardized OBD2 code, the symptoms and the location of the faulty sensor can vary depending on the exact model of your Fiat (year, engine type, etc).
Instead of changing parts blindly, use the CarWatch AI assistant. Scan your Fiat's sensors in real-time and find out the root cause of the P1131 fault before going to the shop.
👉 Diagnose my Fiat for FreeTo clear the engine light and read the P1131 code from your phone, you need an OBD2 adapter compatible with the Fiat ECU.
🛒 View Compatible Scanner on Amazon