C0025 - Chassis Fault Code C0025 - ABS / Bromssystem (Hjulhastighetssensorer & Ventiler)
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System
Chassis (Brakes, Steering, Suspension)
Related Fault Codes
Chassis Fault Code C0001 - ABS / Bromssystem (Hjulhastighetssensorer & Ventiler)
Chassis Fault Code C0002 - ABS / Bromssystem (Hjulhastighetssensorer & Ventiler)
Chassis Fault Code C0003 - ABS / Bromssystem (Hjulhastighetssensorer & Ventiler)
Chassis Fault Code C0004 - ABS / Bromssystem (Hjulhastighetssensorer & Ventiler)
Technical Description
DTC C0025 indicates an electrical circuit malfunction in the brake modulation/sensor subsystem (typically OEM mapped to Brake Switch / Brake Pressure Subcircuit or Solenoid Circuit). The ABS/ESC ECU monitors circuit impedance, voltage thresholds, and switch correlation. The fault triggers when the ECU detects an open circuit, short to ground, short to reference voltage, or irrational signal state compared to primary brake hydraulic pressures and CAN telemetry.
Possible Causes
1. Defekt, feljusterad eller bränd bromsljuskontakt / mikrobrytare vid pedalstället
2. Skadat kablage (avbrott, skavning mot rattstång/pedalmekanism eller ärgade kontaktstift)
3. Felaktigt eller korroderat relä / säkring för bromskretsen
4. Glapp eller internt fel i ABS/ESP-hydraulaggregatets styrenhet
Recommended Solution
Workflow
Mechanic's Tip
Before replacing expensive components, always double-check wiring and connections. 80% of all sensor faults are actually due to corroded contacts or broken wires.
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