DEM-U010000, DEM-U010100, DEM-U012100 Volvo – Rear Axle DEM Network Loss Diagnostic Guide
Technical diagnostic guide for Volvo SPA XC90 / XC60 AWD covering DTCs DEM-U010000, DEM-U010100, DEM-U012100. Factory measurement tolerances and 1:1 Cloning solutions.
Vehicle
VOLVO
Codes
3 units
Analysis Type
Technical Expert
Status
Analyzed
Technical Analysis
The fault code combination DEM-U010000, DEM-U010100, DEM-U012100 on Volvo SPA XC90 / XC60 AWD points to a validated mechanical or sensor failure requiring systematic diagnostic verification.
Expected Symptoms
System Impact
Potential Fault Sources
Workflow / Methodology
Verify supply voltage and reference ground for DEM-U010000, DEM-U010100, DEM-U012100 with multimeter at key ON.
Verify DEM power supply fuse condition in rear electrical module (REM).
Measure pump operating current during activation: 1.5–2.8 A normal, >3.8 A indicates defective pump.
OBD Tuning performs 1:1 Complete Bench Cloning of the DEM module to a refurbished replacement unit.
Live Data & Mätvärdestoleranser (Är/Bör-värden)
Fabriksgodkända referensvärden vid diagnos och live-avläsning
| Parameter / Signal | Testvillkor | Bör-värde (Normalt) | Avvikelse / Varning |
|---|---|---|---|
| AWD CAN Svarsstatus | Tändning på | Online | Offline |
| Haldex Matarpump Ström | Aktiv fyrhjulsdrift | 1.5 – 2.8 A | > 3.8 A (Överbelastad pump) |
| Haldex Kopplingstryck | Full inkoppling | 30.0 – 38.5 bar | < 20.0 bar |
Assessment & Action Proposal
Technical Recommendation
1:1 Cloning of AWD bakaxelmodul at OBD Tuning.
Need a deeper analysis? Use our advanced fault code analyzer to find likely connections and in-depth guidance.
Start Fault Code AnalyzerVanliga frågor om dessa felkoder
Vad är den primära orsaken till felkoderna?
The fault code combination DEM-U010000, DEM-U010100, DEM-U012100 on Volvo SPA XC90 / XC60 AWD points to a validated mechanical or sensor failure requiring systematic diagnostic verification.
Kan man köra vidare med tänd motorlampa / varningslampa?
Körning med aktiva felkoder kan leda till strypt motoreffekt (nödläge / Limp Home), blockerad partikelfilterregenerering eller följdskador på mekaniska komponenter. Felsökning bör genomföras omgående.
Hur åtgärdas kombinationen på säkrast sätt?
1:1 Cloning of AWD bakaxelmodul at OBD Tuning.