Search by diagnostic fault code (e.g. P226D09, P2002F0, P24AEF2, P0401): shows in which ECUs and map packs (.KP / .A2L / .OLS) this code is already mapped for a safe, limp-free disable.
| OBD / FTB Code | Bosch DFC Monitor | Engineering decode | Manual section |
|---|---|---|---|
P0409 0x84 |
DFC_EGRVlvPhysSRCMin |
exhaust gas again cycle EGR powerful individual position sensor physics value be lower than lower bound | §269 |
P0409 0x85 |
DFC_EGRVlvPhysSRCMax |
exhaust gas again cycle EGR powerful individual position sensor physics value surpass upper bound | §269 |
| Format | Solution file / DTC mask map | Brand & ECU | Link |
|---|---|---|---|
.PDF? .PDF — Automotive ECU Engineering FileVerified binary firmware, WinOLS calibration map pack, or dealer technical schematic for ECU programming and diagnostics. |
Yuchai 7H Engine DTC Fault Code List (SPN/FMI) - 2019 (8p PDF) [#107331] | Yuchai / Yunnei / Quanchai / SDEC • OEM ECU & Electronic Modules | $35 • Open solution → |
| DTC fault code | Vehicle brand | ECU family | Files found in database | Solution / Disable |
|---|---|---|---|---|
P0409 |
Yuchai / Yunnei / Quanchai / SDEC ( | OEM ECU & Electronic Modules | ROMs & map packs with this code: 2 files | Open disable files for P0409 → |