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VOLVO
DEM-0006
DEM-0007
DEM-000B

DEM-0006, DEM-0007, DEM-000B Volvo AWD – Haldex Feed Pump & DEM Module

Diagnostic Priority: High
Complexity Level: Advanced

Diagnostic and 1:1 Cloning guide for Volvo AWD models with Haldex Gen 3/4/5 covering DEM module faults DEM-0006, DEM-0007, and DEM-000B hydraulic feed pump.

Vehicle

VOLVO

Codes

3 units

Analysis Type

Technical Expert

Status

Analyzed

Technical Analysis

REF: #EF3ED5

DEM-0006, DEM-0007, and DEM-000B on Volvo AWD vehicles indicate failure of the electric Haldex pre-charge pump or internal output driver burnout in the Differential Electronic Module (DEM).

Expected Symptoms

Instrument cluster display goes completely blank or flickers intermittently (DTCs: DEM-0006, DEM-0007, DEM-000B)
Trip meter and clock reset to zero on crank or run abnormally fast
Gauge needles (speedometer/tachometer) and warning lamps freeze in fixed positions

System Impact

Drivetrain
Engine Control
Emission Control

Potential Fault Sources

01Internal hardware and processor fault on the instrument cluster (DIM) logic board (affecting circuit for DEM-0006, DEM-0007, DEM-000B)
02Severe battery voltage dip during cranking crashing DIM control circuitry
03Trace cracking or terminal oxidation on the internal instrument cluster PCB (logged fault: DEM-0006)

Workflow / Methodology

01

Verify supply voltage and reference ground for DEM-0006, DEM-0007, DEM-000B with multimeter at key ON.

02

Verify DIM main power feed at cluster harness connector (must remain stable above 10.5V during cranking).

03

Check CAN bus communication response and frame timing to DIM via diagnostic tool.

04

OBD Tuning provides 1:1 Complete Bench Cloning of the instrument cluster to a tested replacement unit.

Live Data & Mätvärdestoleranser (Är/Bör-värden)

Fabriksgodkända referensvärden vid diagnos och live-avläsning

Mätvärdesblock
Parameter / SignalTestvillkorBör-värde (Normalt)Avvikelse / Varning
DEM Oljetryck HaldexPump aktiv / Drift30.0 – 38.5 bar< 20.0 bar (Tryckfall)
DEM Pump StrömförbrukningAktiv pumpning1.5 – 2.8 A> 3.8 A (Blockerad pump/Haveririsk)
DEM MatningsspänningTändning på12.2 – 14.5 V< 10.8 V (Säkring/Kablagefel)

Assessment & Action Proposal

Technical Recommendation

Replacement of Haldex feed pump, fluid and filter service, plus 1:1 Cloning / rebuild of damaged DEM module at OBD Tuning.

Need a deeper analysis? Use our advanced fault code analyzer to find likely connections and in-depth guidance.

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Vanliga frågor om dessa felkoder

Vad är den primära orsaken till felkoderna?

DEM-0006, DEM-0007, and DEM-000B on Volvo AWD vehicles indicate failure of the electric Haldex pre-charge pump or internal output driver burnout in the Differential Electronic Module (DEM).

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?

Replacement of Haldex feed pump, fluid and filter service, plus 1:1 Cloning / rebuild of damaged DEM module at OBD Tuning.