When your Volkswagen dashboard warns of a fault and the OBD reader throws the C0221 error, the engine control module indicates this breakdown:
"Right Front Wheel Speed Sensor Input = 0"
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 Volkswagen (year, engine type, etc).
Find out if you can keep driving or if you urgently need to stop. Connect an onboard reader and let CarWatch decipher exactly what's wrong with your Volkswagen.
👉 Diagnose my Volkswagen for FreeTo clear the engine light and read the C0221 code from your phone, you need an OBD2 adapter compatible with the Volkswagen ECU.
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