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Home / DTC / B1995 — Resistance of the left airbag deployment control circuit - down

B1995 — Resistance of the left airbag deployment control circuit - down

Detailed page for trouble code B1995.

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Code

B1995

LAND ROVER B — Body

Resistance of the left airbag deployment control circuit - down

Brand: LAND ROVER
Type: B — Body
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Page language: EN

Causes

  • Short to ground or between squib wiring conductors
  • Damaged or pinched wiring harness near door, seat, or B-pillar
  • Contaminated/corroded or damaged connector at squib or SRS module
  • Internal short within the airbag squib (igniter) itself
  • Incorrect previous repairs (jumpered/bridged connectors, wrong component)
  • Faulty SRS/airbag control module measuring circuit

Symptoms

  • SRS / airbag warning lamp illuminated or flashing
  • Left side / curtain airbag may be disabled (airbag lamp on)
  • Diagnostic trouble code B1995 stored in SRS control module
  • Possible seatbelt pretensioner warning (if in same circuit)
  • No obvious drivability effects (non-powertrain system)

What to check

  • Retrieve freeze frame and full SRS fault data with a capable scan tool
  • Visual inspection of left-side airbag wiring, connectors, seat wiring and door/hinge grommets for damage or corrosion
  • Inspect and wiggle test connectors while monitoring live data (with appropriate safety precautions)
  • Measure resistance of the left squib circuit with SRS module connector disconnected (ohmmeter)
  • Check continuity between squib circuit pins and chassis ground to detect shorts
  • Compare left squib resistance to the right squib (if same design) as a reference

Signal parameters

  • Expected squib resistance (typical): approximately 2–5 ohms for most pyrotechnic squibs (consult vehicle service manual for exact spec)
  • Low-resistance fault: measured resistance significantly below specified lower limit (example:
  • Open-circuit condition: very high resistance or infinite (different DTC)
  • SRS module measures dynamic resistance; live data may show resistance or status flags
  • No/low voltage tests when module is armed — do not attempt to fire squib; measure resistance only with SRS module disconnected and battery removed

Diagnostic algorithm

  1. Safety first: Disable the SRS system per manufacturer procedure — disconnect the battery negative terminal and wait the recommended time (refer to service manual) before touching connectors or components.
  2. Scan and record: Connect an SRS-capable scan tool, read and record all SRS codes and live data. Clear codes only after repairs and recheck.
  3. Visual inspect: Check wiring harness along seat, B-pillar and door hinge area for chafing, pinching, or damage; inspect connectors for corrosion, bent pins or debris.
  4. Isolate circuit: With battery disconnected and SRS module connector removed, measure resistance across the left squib pins at the airbag connector. Compare to factory spec and to the opposite side if available.
  5. Check for shorts: Measure resistance from each squib wire to chassis ground and to each other to identify a short to ground or between conductors.
  6. Connector and harness repair: Repair any damaged wiring, terminal corrosion or connector faults. Replace connector or repair harness as per service manual.
  7. Component substitution: If wiring and connectors check good and resistance is still below spec, replace the left airbag module (squib) following manufacturer procedures.
  8. Module check: If new/known-good squib and wiring are correct but code persists, have SRS control module tested or replaced by a qualified technician.
  9. Final verification: Reconnect everything, reconnect battery, use scan tool to clear codes, perform SRS system self-tests and verify no recurrence of B1995.
  10. Document: Record repairs and tests for safety and warranty purposes.

Likely causes

  • Wiring short to ground at a harness rub point near door hinge or seat
  • Damaged or corroded connector at the left-side squib
  • Internal squib short (failed occupant protection device)
  • Faulty SRS module (less common) or poor ground at module

Fault status

⚠️ Status
B1995 — Left airbag deployment circuit resistance below allowable range (possible squib short/low resistance).
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5 - 2.0 hours

Similar codes

B1996 B0001 B0002 B0020 B0022
320

Browse 320 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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