Toyota Yaris 1.4 D-4D EDC17CP07 0281015393-1037400426 P552V110 DPF+LSU-off.bin
A guide to the Toyota Yaris 1.4 D-4D EDC17CP07 firmware and its DPF and LSU-off modification labels.
Toyota Yaris 1.4 D-4D EDC17CP07 0281015393-1037400426 P552V110 DPF+LSU-off.bin is cataloged as a modified diesel engine-control firmware file. Its filename identifies a Bosch EDC17CP07 engine control unit and labels the variant DPF+LSU-off, indicating changes associated with the diesel particulate filter and the LSU exhaust oxygen sensor.
What the EDC17CP07 controls
The EDC17CP07 is a diesel engine control unit, or ECU. It uses sensor inputs and its calibration to manage fuel injection and engine torque, while coordinating operating functions such as emissions control. On a diesel engine equipped with a particulate filter, the ECU also manages conditions associated with filter loading and regeneration. These are general controller functions, not a list of changes proven to be present in this particular file.
The catalog entry ties the controller to the Toyota Yaris 1.4 D-4D and includes the identifiers 0281015393-1037400426 and P552V110. These numbers help distinguish the listed file from other EDC17CP07 records. A shared controller family alone does not establish that a calibration is interchangeable with another vehicle or ECU.
What DPF+LSU-off means
The DPF is the diesel particulate filter, which traps soot in the exhaust. During regeneration, exhaust conditions are raised to burn away accumulated soot. The filename's DPF-off label indicates a modified variant associated with disabling DPF-related software functions, rather than an unmodified stock calibration.
LSU refers to a wideband lambda, or oxygen, sensor used to measure exhaust oxygen content. The LSU-off label indicates a modification associated with that sensor's software monitoring or use. In practice, either label can cover different changes to control logic and diagnostics. The filename does not establish exactly which routines or fault codes have been altered.
These distinctions matter when interpreting a vehicle's behavior or diagnostic results. A modified calibration can change whether DPF or oxygen-sensor faults are reported, so the absence of a warning does not by itself prove that those systems are functioning normally. Emissions-system modifications may also make a vehicle unlawful for road use, depending on local requirements.