New Back Pressure Valve Daf XF (Euro 6)

The back pressure valve (Back Pressure Valve, BPV) with OE code 2123995 is an electric butterfly valve installed on the exhaust line of DAF Euro 6 vehicles with PACCAR MX-13/MX-11 engines. The assembly integrates the throttle body and an electronic actuator with a position sensor. Control is via CAN and it cooperates with the variable geometry turbocharger (VTG) and EGR in the engine's air management.

Technical specifications

• Type: exhaust butterfly (BPV) with integrated electric actuator and position sensor.
• Control: electronic, closed-loop control via ECU (CAN network).
• Location: exhaust line, upstream of the aftertreatment (DOC/DPF/SCR) in Euro 6 layouts.
• Cooperative function: integrated with VTG and EGR to manage exhaust flow and temperatures.

DIPA can intervene to overhaul these spare parts thanks to its experience and expertise.

Functions

• DPF regeneration: creates back pressure to raise and stabilize exhaust temperature during regenerations (parked and active).
• Cold warm-up: speeds up heating of the engine and the aftertreatment, reducing cold-start emissions.
• Air management: together with VTG and EGR it modulates the composition/flow rate of gases to the EAS (DOC/DPF/SCR) to meet NOx/PM targets.
• Engine brake: contributes to braking power in conjunction with VTG and integrated brake systems (strategy of exhaust butterfly closure).

Model applications

• DAF XF

Common faults and causes

• Wear/failure of the electric actuator: position errors, loss of calibration, overheating.
• Seizing of the butterfly or linkages: carbon/oil deposits that hinder movement.
• Regeneration malfunctions: unstable back pressure with RPM oscillations and interrupted regenerations.

Final conclusions

The DAF BPV 2123995 is a key component for the thermal and emissions management of DAF MX Euro 6 engines. Actuator failures or seized butterflies compromise DPF regenerations, braking response and the reliability of the aftertreatment.

DIPA has a wide range of spare parts dedicated to the Truck sector, construction vehicles and industrial equipment. Not only that: it offers refurbished components with like-new performance that can provide cost savings on replacement while contributing to environmental protection through the circular economy. If the part you need is not available, don't worry: DIPA can refurbish your part "on demand", restoring its full functionality and safety in a short time.