B0094 - Body Fault Code B0094 - SRS / Krockkuddar (Airbag Förar/Passagerar/Sido/Gardin)
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System
Body (Interior, Lighting, Comfort)
Related Fault Codes
Body Fault Code B0001 - SRS / Krockkuddar (Airbag Förar/Passagerar/Sido/Gardin)
Body Fault Code B0002 - SRS / Krockkuddar (Airbag Förar/Passagerar/Sido/Gardin)
Body Fault Code B0003 - SRS / Krockkuddar (Airbag Förar/Passagerar/Sido/Gardin)
Body Fault Code B0004 - SRS / Krockkuddar (Airbag Förar/Passagerar/Sido/Gardin)
Technical Description
DTC B0094 denotes a fault condition in the Center Front Restraint Sensor circuit. The SRS Restraint Control Module (RCM/SDM) monitors the crash sensor via a dedicated two-wire bus utilizing current-loop modulation (e.g., PSI5 or DSI protocol). The DTC triggers if quiescent supply current is out of range, Manchester-encoded digital frame communication is lost, or the sensor's internal accelerometer ASIC fails self-test routines during initialization.
Possible Causes
1. Korrosion eller stiftdeformation i sensorns kontaktdon bakom frontgrillen/kylarmaskeringen pga fukt och vägsalt.
2. Kablagebrott eller skavd ledning i främre kabelstammen (ofta efter mindre frontkollision eller demontering vid service).
3. Defekt främre krocksensor (intern ASIC/piezoelektriskt sensorfel).
4. Defekt RCM/SRS-styrdon (internt gränssnitt eller spänningsregulator trasig).
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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