DTC P205C — Reductant Tank Temperature Sensor Circuit Low
DTC P205C is a standardized diagnostic trouble code defined as "Reductant Tank Temperature Sensor Circuit Low" within the AdBlue / SCR Off subsystem. In DaVinci Deluxe Cloud Edition (v1.0.44), workshops can diagnose root causes or apply deterministic off-road/motorsport subsystem & path-level P205C deactivation on a 100% virgin original ECU file.
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Engineering Breakdown for Fault Code P205C
| Diagnostic Parameter | Technical Specification for P205C |
|---|---|
| Fault Code Identifier | P205C (SAE J2012 / ISO 15031-6 Powertrain) |
| Official Definition | Reductant Tank Temperature Sensor Circuit Low |
| Primary ECU Subsystem | AdBlue / SCR Off |
| Limp-Mode & Derate Impact | Illuminates MIL + AdBlue/DEF warning lamp and can trigger Euro 6 / Tier 4F start-inducement countdown ("No Start in XXX km") or 24V torque derate. |
| 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 AdBlue / SCR Off calibration or selective path-level P205C 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 P205C mean?
Diagnostic Trouble Code P205C means "Reductant Tank Temperature Sensor Circuit Low" and belongs to the AdBlue / SCR Off monitoring subsystem.
What symptoms does P205C cause on diesel or petrol ECUs?
Illuminates MIL + AdBlue/DEF warning lamp and can trigger Euro 6 / Tier 4F start-inducement countdown ("No Start in XXX km") or 24V torque derate.
How is P205C 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 AdBlue / SCR Off calibration or selective path-level P205C deactivation with 24h/7 live engineering support.