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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 70 (Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid)) >> Diagnostic Trouble Code (DTC) Charts And Descriptions >> P0231 - Fuel Pump Secondary Circuit Low

P0231 - Fuel Pump Secondary Circuit Low

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DTC DESCRIPTION P0231 - FUEL PUMP SECONDARY CIRCUIT LOW

Description:  This DTC sets when the fuel pump (FP) is commanded ON and the PCM does not detect voltage on the FPM circuit.
Possible Causes: 
  • B+ circuit to the FP relay open
  • Damaged FP relay
  • FPPWR circuit between the FP relay and its connection to the FPM circuit open
Diagnostic Aids:   
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to Pinpoint Test KC .
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