B009C

Code

Generic B — Body

Left Side Restraints Sensor 6

Brand: Generic

Type: B — Body

Views: UK: 15 EN: 32 RU: 24

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Open or short in the sensor wiring or connector
Corroded, bent, or pushed-out pins in the sensor connector
Failed or intermittent left side restraints sensor (internal fault)
Poor ground or low battery/vehicle voltage during sensor self-test
Water intrusion or physical damage at the sensor or seat area
Incorrectly installed or incompatible replacement sensor or module

Symptoms

Airbag/SRS warning lamp illuminated on instrument panel
Possible disablement of left-side airbag/pretensioner until repaired
SRS system self-test fails at ignition with stored fault B009C
Intermittent warning lamp if fault is intermittent or wiring is intermittent
No drivability symptoms (engine runs normally) — safety system fault only

What to check

Read all stored SRS codes and freeze frame data with a capable scan tool
Check battery voltage and charging system; low voltage can cause SRS faults
Visual inspection of left side sensor, seat area, and entire wiring harness for damage, chafing, or water intrusion
Inspect connectors for corrosion, bent pins, contamination, or widening
Wiggle-test wiring and connector while watching live data to reveal intermittent faults
Check SRS module communication status and look for other related codes

Signal parameters

Sensor type: typically an impact/accelerometer or contact switch feeding the SRS control module (may include analog voltage or digital CAN/SENT data depending on OEM)
Common fault signatures: open circuit, short to battery, short to ground, intermittent high resistance, stuck/constant signal
Expected idle signal: varies by manufacturer — many sensors use reference voltages or datastream messages; consult OEM service data for exact voltages/resistance
Continuity/Resistance: an open between sensor and module indicates wiring fault; exact ohm values depend on sensor design — check OEM specifications
Communication: if sensor data is carried on an SRS network, verify proper CAN/SRS bus activity and message presence with a diagnostic tool

Diagnostic algorithm

Retrieve all SRS codes and freeze-frame with a capable scan tool. Note if B009C is the only code or if other SRS/network codes are present.
Ensure vehicle battery is charged. Follow OEM procedure to disable the SRS (disconnect battery negative and wait the specified interval) before doing any physical connector work.
Visually inspect the left side sensor and wiring harness for damage, corrosion, water intrusion, or loose connections. Check under seats, door sills, and hinge areas where harness flexes.
Re-seat the sensor connector and inspect pins. Clean light corrosion with appropriate electrical contact cleaner and replace connector halves if pins are damaged.
With the SRS system re-enabled per OEM instructions, monitor live sensor data while performing a wiggle test on the wiring and connector to detect intermittent faults.
If permitted by manufacturer procedures, measure continuity/resistance between the sensor connector and SRS control module pin. Compare to OEM values; look for opens or high resistance.
If the sensor communicates over a data bus, verify the presence and integrity of messages using a scan tool or oscilloscope. Check for bus errors or lost communication codes.
If wiring and connectors check good but the code remains, replace the left side restraints sensor with a known-good OEM or specified unit and retest. Follow correct replacement, orientation, and torque procedures.
After repair or replacement, clear codes and perform the SRS system self-test with the scan tool. Re-scan after key cycles or a test drive to ensure the fault does not return.
If code persists after sensor replacement and wiring verified, suspect SRS control module fault or a deeper bus/ground issue; escalate to module-level diagnostics or OEM support.

Likely causes

Damaged harness at seat/door hinge or under-seat where wiring flexes
Corrosion/water contamination in the seat/side impact sensor connector
Failed sensor due to impact, age, or manufacturing defect
Loose or missing ground at nearby chassis ground point
Connector not fully seated after service or replacement without coding

Fault status

⚠️ Status

Left-side restraints sensor 6 malfunction detected. SRS system has logged a fault that can disable left-side protection devices. Inspect wiring, connector, and sensor; repair and clear codes according to OEM safety procedures.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5 - 2.5 hours