Fuel Pump Secondary Circuit Low

Q: What does code P0231 mean?

Fuel Pump Secondary Circuit Low: The fuel pump feedback circuit is reading lower than expected — possible pump failure.

Powertrain Code · High

What does P0231 mean?

The fuel pump feedback circuit is reading lower than expected — possible pump failure.

System: Fuel System

P0231 is a powertrain diagnostic trouble code indicating fuel pump secondary circuit low. This code is classified as high severity, which means: address soon — may cause further damage.

Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your vehicle.