P0407 - OBD II Trouble Code

Our automotive experts have put together the following information about the P0407 diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P0407 code.

What Does P0407 Code Mean?

OBD-II Code P0407 is defined as a Exhaust Gas Recirculation Sensor "B" Circuit Low

EGR (Exhaust Gas Recirculation) systems are used to reduce the combustion temperature, thus reducing emissions. If the engine control module (PCM) does not detect the amount of flow requested from the EGR, it will set code P0407.

P0407 Symptoms

• Decreased engine performance
• Increased fuel consumption

Common Problems That Trigger the P0407 Code

• EGR valve failure
• Powertrain Control Module (PCM) failure
• Wiring issue

Common Repairs Needed for the P0407 Code

• EGR Valve Replacement