Technical Definition:

Exhaust Gas Recirculation (EGR) (Sensor B) Circuit Low

Trouble Code: P0407
Address: 0x0407
System: Powertrain
Subsystem: Auxiliary Emission Controls
Technical Description:

Possible Causes:
  • 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

Possible Symptoms:
  • MIL (Malfunction Indicator Lamp) illumination

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

Leave a Reply

Your email address will not be published.