DTC P1446 — Particulate Filter Additive Tank Level Too Low (Eolys Empty)
DTC P1446 is a standardized diagnostic trouble code defined as "Particulate Filter Additive Tank Level Too Low (Eolys Empty)" within the DPF / FAP Additive Off subsystem. In DaVinci Deluxe Cloud Edition (v1.0.44), workshops can diagnose root causes or apply deterministic off-road/motorsport subsystem & path-level P1446 deactivation on a 100% virgin original ECU file.
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Engineering Breakdown for Fault Code P1446
| Diagnostic Parameter | Technical Specification for P1446 |
|---|---|
| Fault Code Identifier | P1446 (SAE J2012 / ISO 15031-6 Powertrain) |
| Official Definition | Particulate Filter Additive Tank Level Too Low (Eolys Empty) |
| Primary ECU Subsystem | DPF / FAP Additive Off |
| Limp-Mode & Derate Impact | Triggers MIL / glow-plug lamp, blocks active regeneration, reduces boost/fuel torque request, and elevates exhaust backpressure. |
| Workshop Pre-Check | Inspect harness continuity, +5V/+12V/+24V reference supply, live sensor plausibility, and mechanical component integrity before any software modification. |
| Off-Road / Motorsport Calibration | Upload a 100% virgin unmodified original ECU binary at https://www.davincideluxe.fr/online-ecu-tuning to apply complete DPF / FAP Additive Off calibration or selective path-level P1446 fault-class deactivation while keeping engine oil, temperature, and rail-pressure safety intact. |
Related OBD2, Euro 6d & 24V Diagnostic Trouble Codes (148)
Frequently Asked Technical Questions
What does fault code P1446 mean?
Diagnostic Trouble Code P1446 means "Particulate Filter Additive Tank Level Too Low (Eolys Empty)" and belongs to the DPF / FAP Additive Off monitoring subsystem.
What symptoms does P1446 cause on diesel or petrol ECUs?
Triggers MIL / glow-plug lamp, blocks active regeneration, reduces boost/fuel torque request, and elevates exhaust backpressure.
How is P1446 calibrated safely in DaVinci Deluxe Cloud Edition (v1.0.44)?
After mechanical verification, upload a 100% virgin original Bench, Boot, or OBD ECU readout to DaVinci Deluxe Cloud Edition (https://www.davincideluxe.fr/online-ecu-tuning) to apply deterministic DPF / FAP Additive Off calibration or selective path-level P1446 deactivation with 24h/7 live engineering support.