P0405 OBD II Trouble Code Exhaust Gas Recirculation Sensor A Circuit Low

Detailed information on troubleshooting and repairing a P0405 DTC code which has to do with the EGR Circuit Sensor A. Also includes links to relevant forum topics on the code.

Symptoms of P0405 OBD II Trouble Code

MIL (Malfunction Indicator Lamp) illumination

Common Causes of P0405 OBD II Trouble Code

Short to ground in EGR signal or Reference circuits
Short to voltage in EGR ground or signal circuits
Bad EGR valve
Bad PCM wiring issues due to chafing or loose terminals

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