What Does P0407 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. engine code P0407P0407 fixobd P0407dtc P0407obd code P0407obd2 P0407P0407 car codediagnostic code P0407car code P0407check engine code P0407fehlercode P0407P0407 fiatcodigo P0407codigo falla P0407P0407 kody b??dówcodigo de falla P0407 What are the common causes of P0407 ? Dirty air cleaner element Damaged DPF A plugged converter will cause of host of driveability problems as well as set this code. A severely plugged converter will result in the inability to increase rpm when under load. Look for a code such as P0421 -- catalytic converter efficiency below threshold if the converter indicating a faulty converter. An air leak forward of the DPF will change the sensor readings resulting in the code How do you troubleshoot P0407 ? The most common repairs for a P0407 are as follows: Clear the code with a scanner and monitor for the code to return. Visually inspect the EGR valve and associated wiring and vacuum lines for any obvious issues. Clean the EGR valve, clear the code and monitor for it to return. Check voltage and ground – repair wiring as needed. Check vacuum lines to the EGR and EGR solenoid – repair as needed. Force the solenoid to trigger on and off to check if it is working properly. Replace EGR valve. Searches related to P0407 - Exhaust Gas Recirculation Sensor 'B' Circuit Low exhaust gas recirculation sensor b circuit high p0407 vw 1.6 tdi p0407 audi a3 egr potentiometer g212 7343-p0407 g212 vw exhaust gas recirculation b control circuit low p0408 code