CARWATCH
P0231 Error on Subaru
What it means and how to fix it
🚨 Fault Description (P0231)
When your Subaru dashboard warns of a fault and the OBD reader throws the P0231 error, the engine control module indicates this breakdown:
"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 Subaru (year, engine type, etc).
Other frequent faults detected in Subaru:
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To clear the engine light and read the P0231 code from your phone, you need an OBD2 adapter compatible with the Subaru ECU.
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