P0231 Error on Mercedes-Benz

Q: P0231 Error on Mercedes-Benz

If the Check Engine light of your Mercedes-Benz is on and the scanner shows the P0231 code, it means the ECU has detected the following problem: Fuel Pump Primary Circuit Malfunction

What it means and how to fix it

🚨 Fault Description (P0231)

If the Check Engine light of your Mercedes-Benz is on and the scanner shows the P0231 code, it means the ECU has detected the following problem:

"Fuel Pump Primary 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 Mercedes-Benz (year, engine type, etc).

Other frequent faults detected in Mercedes-Benz:

P0420 P0300 P0171 P0401 P0141 P0430 P0113 P0455 P0301 P0302 P0303 P0304 P0135 P0442 P0172

Get an Exact AI Diagnosis for your Mercedes-Benz

With the CarWatch app you can connect a Bluetooth OBD2 scanner and let our AI analyze the P0231 code by crossing it with your vehicle's history and real-time telemetry.

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Recommended OBD2 Scanner for Mercedes-Benz

To clear the engine light and read the P0231 code from your phone, you need an OBD2 adapter compatible with the Mercedes-Benz ECU.

🛒 View Compatible Scanner on Amazon