If the Check Engine light of your Peugeot is on and the scanner shows the P0146 code, it means the ECU has detected the following problem:
"O2 Sensor Circuit Slow Response (Bank 1 Sensor 3)"
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 Peugeot (year, engine type, etc).
With the CarWatch app you can connect a Bluetooth OBD2 scanner and let our AI analyze the P0146 code by crossing it with your vehicle's history and real-time telemetry.
👉 Diagnose my Peugeot for FreeTo clear the engine light and read the P0146 code from your phone, you need an OBD2 adapter compatible with the Peugeot ECU.
🛒 View Compatible Scanner on Amazon