P0231 OBD II Trouble Code Fuel Pump Secondary (Feedback) Circuit Low Voltage

Detailed information on troubleshooting and repairing a P0231 DTC code which has to do with low voltage on the fuel pump secondary circuit. Also includes links to relevant forum topics on the code.

Symptoms of P0231 OBD II Trouble Code

No start Start and stall
Misfire
Inadequate fuel supply

Common Causes of P0231 OBD II Trouble Code

Bad FP (fuel pump) relay
Harness chafing causing open in fuel pump supply circuit
Loose/damaged connectors
Open in feedback circuit
Fuel pump fuse blown due to short to ground

P0000 OBD II Trouble Code No Diagnostic Trouble Codes Found

P0001 OBD II Trouble Code DTC Fuel Volume Regulator Control Circuit/Open

P0002 OBD II Trouble Code DTC Fuel Volume Regulator Control Circuit Range/Performance

P0003 OBD II Trouble Code DTC Fuel Volume Regulator Control Circuit Range/Performance

P0004 OBD II Trouble Code DTC Fuel Volume Regulator Control Circuit Range/Performance

P0005 OBD II Trouble Code DTC Fuel Shutoff Valve A Control Circuit/Open

P0006 OBD II Trouble Code DTC Fuel Shutoff Valve A Control Circuit Low

P0007 OBD II Trouble Code DTC Fuel Shutoff Valve A Control Circuit High

P0008 OBD II Trouble Code Engine Positions System Performance Bank 1

P0009 OBD II Trouble Code Engine Positions System Performance Bank 2