In my case, both the LP-EGR valve and the HP-EGR cooler bypass valve were not operational. When the LP-EGR actuator isn't operational, the LP-EGR valve position feedback sensor will complain, as well as the LP-EGR cooler temp sensors, eventually. I forget the code numbers. I would start with the HP-EGR cooler because it's easy. The coil return Service type Exhaust Gas Recirculation/EGR Valve Replacement: Estimate $883.93: Shop/Dealer Price $1093.67 - $1683.50: 2008 BMW X5 V8-4.8L: Service type Exhaust Gas Recirculation/EGR Valve Replacement: Estimate $785.01: Shop/Dealer Price $975.05 - $1505.71: 2016 BMW X5 L6-3.0L Turbo Diesel: Service type Exhaust Gas Recirculation/EGR Valve This client came in for a check engine light in their BMW X5. Upon diagnostic scan testing, it was revealed there was a problem with the EGR valve. So basically what’s referred to as an EGR insufficient flow. Initial diagnosis in checking, testing of the vehicle in front of us revealed a sticking EGR valve and also the EGR cooler was heavily Over 30,000 MINI and 4000 BMW 2 Series Active Tourer vehicles recalled for a potential EGR coolant leak; 40,000 Nissan Micras recalled due to potential driver’s seat rail failure; 2000 Ford Focus models recalled for potential seat belt rivet issue; BMW, Nissan and Ford are among several manufacturers to have issued safety recalls in recent weeks P0401 code definition. Exhaust Gas Recirculation Flow Insufficient Detected. What the P0401 code means. P0401 is an OBD-II generic code that the engine control module (ECM) detected the engine exhaust gas recirculation (EGR) valve is not flowing enough recirculated exhaust gases when it is commanded to open the flow of gases into the intake manifold. 6. Throttle valve faulty (in conjunction with faults on the throttle valve). 7. Exhaust gas recirculation valve faulty (in conjunction with faults on the exhaust gas recirculation valve). 8. Turbocharger faulty (in conjunction with faults in the turbocharger). For engines with single-stage charge: Perform air-mass system test. 2007-12 BMW E70 X5: Takata airbag recall #2. PRA 2017/16298. 2013 BMW E70 X5: Takata airbag recall #3. In February 2018, recall PRA 2018/16566 was issued for 2013 BMW E70 X5 vehicles; PRA 2018/15455 was an extension of the previously issued PRA 2017/16230 PRA 2018/16566. 2007-10 BMW E70 X5: fire hazard. OBD II code P0401 Exhaust EGR Flow Insufficient. Updated: July 25, 2021. The OBDII fault code P0401 means that the engine computer has detected that the Exhaust Gas Recirculation (EGR) system flow is insufficient. The EGR system redirects a small amount of exhaust gases back into the intake. Read more how the EGR system works in this article . My ideal state is to leave the DEF and SCR intact, and I have read that these 2 systems talk to the EGR. If the parameters could be revised such that the EGR opens at a much higher RPM, combined with a reduction or elimination of CCV vapours in the EGR, much of the carbon problem could be solved. ‘16 535d Space Grey. 9TWds.

bmw x5 egr valve problems