Answer
Jan 17, 2026 - 03:24 PM
For your 2015 BMW X3 28d (F25), this manual does cover diesel emissions systems as part of the factory documentation. On BMW diesel models like the 28d, the OEM manual package typically includes all of the following related to emissions:
- Diesel particulate filter (DPF) system — operation, regeneration logic, sensors
- Exhaust Gas Recirculation (EGR) — valves, cooler, flow control
- NOx/OPF/AdBlue (if equipped in your region) — sensors, dosing unit, plumbing, diagnostics
- Emissions-related sensors — NOx, oxygen/UEGO, pressure/temperature sensors
- Fault-finding and test procedures for emissions circuits
You'll find the emissions system diagrams, wiring, specs, and diagnostic steps the dealers use to troubleshoot faults and understand how the system operates.
So yes — if you’re looking to diagnose or understand the diesel emissions system on your 2015 X3 28d (things like DPF regen faults, EGR issues, NOx sensor codes, etc.), this manual covers it.
