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Home / DTC / B0093 — Left Side Restraints Sensor 3

B0093 — Left Side Restraints Sensor 3

Detailed page for trouble code B0093.

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Code

B0093

Generic B — Body

Left Side Restraints Sensor 3

Brand: Generic
Type: B — Body
Views: UK: 19 EN: 44 RU: 20
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or short in the sensor wiring harness
  • Corroded, loose or damaged connector at sensor or control module
  • Failed/defective left side restraints sensor 3 (internal fault)
  • Poor or missing ground or reference power to the sensor
  • Water intrusion or physical damage to sensor/harness
  • Faulty restraint control module or internal module software/firmware error

Symptoms

  • Airbag / SRS warning lamp illuminated on instrument panel
  • Diagnostic trouble code B0093 stored in SRS/Body module
  • Possible disablement of left side airbag/seatbelt pretensioner deployment for safety
  • Related side-impact restraints may not operate correctly until fault is cleared and repaired
  • Vehicle may fail safety inspection where SRS faults are required to be repaired

What to check

  • Connect a capable scan tool and record stored codes and freeze-frame data; view live data for the sensor if available
  • Check for additional SRS codes that may point to harness or module issues
  • Visually inspect sensor, connector, and wiring for damage, corrosion, pin push-outs, signs of water intrusion or physical impact
  • Check fuses and power supply circuits to the restraint system and sensor
  • Backprobe sensor connector with ignition on (or per OEM procedure) and verify reference voltage and ground presence
  • Perform continuity checks between sensor connector and SRS control module pins (with battery disconnected as required)

Signal parameters

  • Reference supply: typically a switched or ignition supply and/or reference voltage (commonly ~5 V) — verify with OEM diagram
  • Signal type: may be analog (0–5 V), resistance-based, or digital (LIN/CAN/SPI) depending on vehicle — consult OEM wiring
  • Typical signal idle: depends on sensor design; many accelerometer/impact sensors report near-zero acceleration or stable digital value when quiescent
  • Expected resistance: varies by sensor design (some use kΩ-level resistances) — measure and compare to OEM specification

Diagnostic algorithm

  1. Read and record all SRS/B codes and freeze-frame data with a manufacturer-level scan tool.
  2. Visual inspection: check left-side sensor location, mounting, connector, and harness for damage, corrosion, or water ingress.
  3. Verify battery voltage stable and fuses related to SRS are intact.
  4. With ignition per OEM procedure, backprobe the sensor connector: confirm reference voltage and good ground presence; note signal behaviour on live data or multimeter/oscilloscope.
  5. Perform continuity and resistance checks on wiring between the sensor connector and restraint control module; repair any opens/shorts found.
  6. Wiggle the harness/connectors while monitoring live data to identify intermittent faults.
  7. If wiring and power/ground are good, compare sensor output to expected OEM values. If out of spec, replace the sensor.
  8. If sensor replacement does not clear code, inspect and test the SRS control module communication lines (CAN/LIN) and verify module grounds and power; consult wiring diagrams.
  9. If module input appears suspect, consult manufacturer service info — reprogramming or module replacement may be required only after ruling out sensor/harness faults.
  10. After repairs, clear codes, perform required SRS system initialization or calibration per OEM, then re-scan and test-drive as required to confirm fault does not return.

Likely causes

  • Wiring harness open, short to ground or short to power between sensor and SRS module
  • Corroded/damaged connector at the sensor or module
  • Faulty left side restraints sensor 3 (common cause)
  • Missing/poor chassis ground or blown/incorrect fuse supplying the sensor
  • Water-damaged sensor or harness (common in door/side impacts)
  • Faulty restraint control module (less common)

Fault status

⚠️ Status
Left side restraints sensor 3 - circuit/communication malfunction detected. SRS warning light illuminated; side restraints may be disabled until fault is diagnosed and repaired.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B0092 B0094 B00A3 B0001 B0020
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Code

B0093

HUMMER B — Body

PPS/CPS self-test malfunction

Brand: HUMMER
Type: B — Body
Views: UK: 8 EN: 19 RU: 14
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or short in the sensor wiring harness
  • Corroded, loose or damaged connector at sensor or control module
  • Failed/defective left side restraints sensor 3 (internal fault)
  • Poor or missing ground or reference power to the sensor
  • Water intrusion or physical damage to sensor/harness
  • Faulty restraint control module or internal module software/firmware error

Symptoms

  • Airbag / SRS warning lamp illuminated on instrument panel
  • Diagnostic trouble code B0093 stored in SRS/Body module
  • Possible disablement of left side airbag/seatbelt pretensioner deployment for safety
  • Related side-impact restraints may not operate correctly until fault is cleared and repaired
  • Vehicle may fail safety inspection where SRS faults are required to be repaired

What to check

  • Connect a capable scan tool and record stored codes and freeze-frame data; view live data for the sensor if available
  • Check for additional SRS codes that may point to harness or module issues
  • Visually inspect sensor, connector, and wiring for damage, corrosion, pin push-outs, signs of water intrusion or physical impact
  • Check fuses and power supply circuits to the restraint system and sensor
  • Backprobe sensor connector with ignition on (or per OEM procedure) and verify reference voltage and ground presence
  • Perform continuity checks between sensor connector and SRS control module pins (with battery disconnected as required)

Signal parameters

  • Reference supply: typically a switched or ignition supply and/or reference voltage (commonly ~5 V) — verify with OEM diagram
  • Signal type: may be analog (0–5 V), resistance-based, or digital (LIN/CAN/SPI) depending on vehicle — consult OEM wiring
  • Typical signal idle: depends on sensor design; many accelerometer/impact sensors report near-zero acceleration or stable digital value when quiescent
  • Expected resistance: varies by sensor design (some use kΩ-level resistances) — measure and compare to OEM specification

Diagnostic algorithm

  1. Read and record all SRS/B codes and freeze-frame data with a manufacturer-level scan tool.
  2. Visual inspection: check left-side sensor location, mounting, connector, and harness for damage, corrosion, or water ingress.
  3. Verify battery voltage stable and fuses related to SRS are intact.
  4. With ignition per OEM procedure, backprobe the sensor connector: confirm reference voltage and good ground presence; note signal behaviour on live data or multimeter/oscilloscope.
  5. Perform continuity and resistance checks on wiring between the sensor connector and restraint control module; repair any opens/shorts found.
  6. Wiggle the harness/connectors while monitoring live data to identify intermittent faults.
  7. If wiring and power/ground are good, compare sensor output to expected OEM values. If out of spec, replace the sensor.
  8. If sensor replacement does not clear code, inspect and test the SRS control module communication lines (CAN/LIN) and verify module grounds and power; consult wiring diagrams.
  9. If module input appears suspect, consult manufacturer service info — reprogramming or module replacement may be required only after ruling out sensor/harness faults.
  10. After repairs, clear codes, perform required SRS system initialization or calibration per OEM, then re-scan and test-drive as required to confirm fault does not return.

Likely causes

  • Wiring harness open, short to ground or short to power between sensor and SRS module
  • Corroded/damaged connector at the sensor or module
  • Faulty left side restraints sensor 3 (common cause)
  • Missing/poor chassis ground or blown/incorrect fuse supplying the sensor
  • Water-damaged sensor or harness (common in door/side impacts)
  • Faulty restraint control module (less common)

Fault status

⚠️ Status
Left side restraints sensor 3 - circuit/communication malfunction detected. SRS warning light illuminated; side restraints may be disabled until fault is diagnosed and repaired.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

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B0092 B0094 B00A3 B0001 B0020
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Code

B0093

LAND ROVER B — Body

Left side retention sensor 3 Left side retention sensor right

Brand: LAND ROVER
Type: B — Body
Views: UK: 4 EN: 12 RU: 10
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or short in the sensor wiring harness
  • Corroded, loose or damaged connector at sensor or control module
  • Failed/defective left side restraints sensor 3 (internal fault)
  • Poor or missing ground or reference power to the sensor
  • Water intrusion or physical damage to sensor/harness
  • Faulty restraint control module or internal module software/firmware error

Symptoms

  • Airbag / SRS warning lamp illuminated on instrument panel
  • Diagnostic trouble code B0093 stored in SRS/Body module
  • Possible disablement of left side airbag/seatbelt pretensioner deployment for safety
  • Related side-impact restraints may not operate correctly until fault is cleared and repaired
  • Vehicle may fail safety inspection where SRS faults are required to be repaired

What to check

  • Connect a capable scan tool and record stored codes and freeze-frame data; view live data for the sensor if available
  • Check for additional SRS codes that may point to harness or module issues
  • Visually inspect sensor, connector, and wiring for damage, corrosion, pin push-outs, signs of water intrusion or physical impact
  • Check fuses and power supply circuits to the restraint system and sensor
  • Backprobe sensor connector with ignition on (or per OEM procedure) and verify reference voltage and ground presence
  • Perform continuity checks between sensor connector and SRS control module pins (with battery disconnected as required)

Signal parameters

  • Reference supply: typically a switched or ignition supply and/or reference voltage (commonly ~5 V) — verify with OEM diagram
  • Signal type: may be analog (0–5 V), resistance-based, or digital (LIN/CAN/SPI) depending on vehicle — consult OEM wiring
  • Typical signal idle: depends on sensor design; many accelerometer/impact sensors report near-zero acceleration or stable digital value when quiescent
  • Expected resistance: varies by sensor design (some use kΩ-level resistances) — measure and compare to OEM specification

Diagnostic algorithm

  1. Read and record all SRS/B codes and freeze-frame data with a manufacturer-level scan tool.
  2. Visual inspection: check left-side sensor location, mounting, connector, and harness for damage, corrosion, or water ingress.
  3. Verify battery voltage stable and fuses related to SRS are intact.
  4. With ignition per OEM procedure, backprobe the sensor connector: confirm reference voltage and good ground presence; note signal behaviour on live data or multimeter/oscilloscope.
  5. Perform continuity and resistance checks on wiring between the sensor connector and restraint control module; repair any opens/shorts found.
  6. Wiggle the harness/connectors while monitoring live data to identify intermittent faults.
  7. If wiring and power/ground are good, compare sensor output to expected OEM values. If out of spec, replace the sensor.
  8. If sensor replacement does not clear code, inspect and test the SRS control module communication lines (CAN/LIN) and verify module grounds and power; consult wiring diagrams.
  9. If module input appears suspect, consult manufacturer service info — reprogramming or module replacement may be required only after ruling out sensor/harness faults.
  10. After repairs, clear codes, perform required SRS system initialization or calibration per OEM, then re-scan and test-drive as required to confirm fault does not return.

Likely causes

  • Wiring harness open, short to ground or short to power between sensor and SRS module
  • Corroded/damaged connector at the sensor or module
  • Faulty left side restraints sensor 3 (common cause)
  • Missing/poor chassis ground or blown/incorrect fuse supplying the sensor
  • Water-damaged sensor or harness (common in door/side impacts)
  • Faulty restraint control module (less common)

Fault status

⚠️ Status
Left side restraints sensor 3 - circuit/communication malfunction detected. SRS warning light illuminated; side restraints may be disabled until fault is diagnosed and repaired.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B0092 B0094 B00A3 B0001 B0020
HTML Workshop Manuals AI manual library for LAND ROVER Click to show available manuals 39

LAND ROVER 2018 Discovery HSE Luxury, 3.0L Eng VIN K

HTML Manual
Discovery HSE Luxury, 3.0L Eng VIN K Years: 2018 Manual in English Sections: 52,300
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LAND ROVER · Discovery HSE Luxury, 3.0L Eng VIN K · 2018 · 3.0L
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LAND ROVER 2018 Discovery HSE Luxury, 3.0L Eng VIN V

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Discovery HSE Luxury, 3.0L Eng VIN V Years: 2018 Manual in English Sections: 50,193
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LAND ROVER · Discovery HSE Luxury, 3.0L Eng VIN V · 2018 · 3.0L
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LAND ROVER 2018 Discovery HSE, 3.0L Eng VIN K

HTML Manual
Discovery HSE, 3.0L Eng VIN K Years: 2018 Manual in English Sections: 52,292
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LAND ROVER · Discovery HSE, 3.0L Eng VIN K · 2018 · 3.0L
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LAND ROVER 2018 Discovery HSE, 3.0L Eng VIN V

HTML Manual
Discovery HSE, 3.0L Eng VIN V Years: 2018 Manual in English Sections: 50,193
Short description
LAND ROVER · Discovery HSE, 3.0L Eng VIN V · 2018 · 3.0L
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LAND ROVER 2018 Discovery Sport HSE

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Discovery Sport HSE Years: 2018 Manual in English Sections: 50,414
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LAND ROVER · Discovery Sport HSE · 2018
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LAND ROVER 2018 Discovery Sport HSE Luxury

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Discovery Sport HSE Luxury Years: 2018 Manual in English Sections: 50,419
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LAND ROVER · Discovery Sport HSE Luxury · 2018
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LAND ROVER 2018 Discovery Sport SE

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Discovery Sport SE Years: 2018 Manual in English Sections: 50,419
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LAND ROVER · Discovery Sport SE · 2018
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LAND ROVER 2018 Range Rover Autobiography

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Range Rover Autobiography Years: 2018 Manual in English Sections: 78,130
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LAND ROVER · Range Rover Autobiography · 2018
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Workshop Manuals

Repair manuals for LAND ROVER

3

Land Rover Defender 300Tdi — Workshop Manual (1996 model year)

Workshop Manual
Defender 300Tdi Years: 1996 Manual in English 7.5 MB
Short description

Official workshop manual for the Land Rover Defender 300Tdi (from 1996 model year). Contains specifications, adjustment, fault diagnosis and step-by-step repair and overhaul procedures for engine, transmission, axles, suspension, brakes, electrical and body. Intended for dealer workshops and trained technicians.

199,00 UAH
Contents
Key sections:
  • 01 INTRODUCTION
  • 04 GENERAL SPECIFICATION DATA
  • 05 ENGINE TUNING DATA
  • 07 GENERAL FITTING REMINDERS
  • 09 LUBRICANTS, FLUIDS AND CAPACITIES
  • 10 MAINTENANCE
  • 12 ENGINE Tdi
  • - Description and operation
  • - Fault diagnosis
  • - Adjustment
  • - Repair and overhaul procedures
  • 19 FUEL SYSTEM Tdi
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Land Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)

Workshop Manual
Defender Years: 1999–2002 Manual in English 7.6 MB
Short description

Workshop Manual Supplement and Body Repair Manual for the Land Rover Defender. Includes general specifications, maintenance schedules, tuning data and step‑by‑step repair procedures for engine, transmission, suspension, brakes, electrical and body repairs. Covers Defender models from 1999 and 2002 model years.

199,00 UAH
Contents
Key sections:
  • 01 - INTRODUCTION
  • - Introduction
  • - Dimensions
  • - References
  • - Repairs and replacements
  • - Poisonous substances
  • - Fuel handling precautions
  • - Synthetic rubber
  • - Recommended sealants
  • - Used engine oil precautions
  • - Accessories and conversions
  • - Wheels and tyres
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Land Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)

Workshop Manual
Manual in English Pages: 494 7.1 MB
Short description

Land Rover Range Rover Electrical Library (LRL 0453ENG). Comprehensive manual covering fuse details, earth points, system descriptions, diagnostics and connector pin-outs for electrical troubleshooting and repair. Intended for technicians and service workshops.

199,00 UAH
Contents
Key sections:
  • 1 INTRODUCTION
  • 1.1 About this document
  • 1.2 Battery voltage
  • 1.3 Electrical precautions
  • 1.4 Battery disconnecting / charging
  • 1.5 Disciplines / greases
  • 1.6 Abbreviations
  • 1.7 HeVAC, sensors abbreviations
  • 1.8 How to use this document
  • 1.9 Connector detail format
  • 1.10 Fault diagnosis
  • 1.11 Wire colour codes
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