Toyota Yaris 1.4 D-4D EDC17CP07 0281015393-400426P552V110-1037400426_DPFoff.bin
A guide to the Toyota Yaris 1.4 D-4D EDC17CP07 firmware identifier and the DPF-off variant named in the catalog.
The file Toyota Yaris 1.4D4D EDC17CP07 0281015393-400426P552V110-1037400426_DPFoff.bin is cataloged as a modified diesel engine control unit file for a Toyota Yaris 1.4 D-4D. Its DPFoff label indicates a variant intended to disable diesel particulate filter functions in the engine software. The filename identifies that intended modification, but it does not establish exactly which calibration or diagnostic routines were changed.
What the EDC17CP07 controller does
The Bosch EDC17CP07 is an electronic diesel engine controller. In a 1.4 D-4D application, it manages fuel injection and coordinates engine operating functions using information such as engine speed, temperature and airflow. Its decisions affect starting, response, fuel delivery and emissions control.
The catalog name associates this controller with Bosch number 0281015393 and the software identifiers 400426P552V110 and 1037400426. Together, these details distinguish the entry from other EDC17 files. They do not, by themselves, prove compatibility with every Yaris 1.4 D-4D or identify a particular factory software revision.
What the DPF-off label means
A diesel particulate filter traps soot in the exhaust. Under suitable conditions, the engine management system supports regeneration, a process that raises exhaust temperature to burn accumulated soot. The ECU also uses monitored operating conditions and relevant sensor information to assess filter operation and report faults.
The DPFoff suffix describes this named file as a modified variant rather than an explicitly labeled stock file. In practice, a DPF-off modification is intended to suppress some or all filter-related control and monitoring. The suffix alone cannot confirm whether regeneration, fault reporting or other routines were altered in this particular file.
For diagnosis, the distinction matters: an exhaust warning or regeneration concern can involve the filter, sensors, wiring or engine operating conditions as well as ECU software. Disabling filter-related functions is not the same as repairing the underlying fault, and changes to emissions controls can make a vehicle unlawful for road use.