Toggle Side Panel

Shopping Cart

No products in the basket.

Shopping Cart

No products in the basket.

Close search
Home / DTC / B0072 — Passenger Seat Belt Pretensioner A Deployment Control

B0072 — Passenger Seat Belt Pretensioner A Deployment Control

Detailed page for trouble code B0072.

33,912codes
59brands
11,451generic
22,461specific
All codes P-codes (Powertrain) B-codes (Body) C-codes (Chassis) U-codes (Network/User) Tesla Alerts
Reset
Code

B0072

Generic B — Body

Passenger Seat Belt Pretensioner A Deployment Control

Brand: Generic
Type: B — Body
Views: UK: 22 EN: 65 RU: 39
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or short in the pretensioner (squib) wiring harness
  • Corroded or loose connector at the pretensioner or SRS module
  • Failed or previously-deployed passenger pretensioner (squib)
  • Faulty SRS/airbag control module or internal driver circuitry
  • Poor ground or battery supply to SRS system
  • Damage to wiring from seat movement, collision, or service work

Symptoms

  • SRS/airbag warning lamp illuminated on instrument panel
  • Seat belt pretensioner will not deploy when commanded
  • Diagnostic trouble code B0072 stored in airbag control unit
  • Possible disabled passenger airbag or restraint functions
  • Vehicle may fail safety inspections while the SRS lamp is on

What to check

  • Retrieve SRS fault codes and freeze-frame data with a compatible scan tool
  • Follow manufacturer safety procedure: disable the battery negative terminal and wait the specified time before handling SRS components
  • Visually inspect passenger seat area: connectors, harness routing, signs of collision damage or repairs
  • Inspect connector pins for corrosion, bent pins, or poor mating
  • With battery disconnected, measure squib resistance at the pretensioner connector and at the SRS module harness connector
  • Check continuity between pretensioner connector and SRS module; verify no short to ground or battery positive

Signal parameters

  • Typical squib resistance (passenger pretensioner): approx. 0.5–3.0 ohms (manufacturer-specific — confirm with vehicle data)
  • Open circuit: infinite resistance (OL) → indicates wiring open or disconnected
  • Short to ground/power: near 0 ohms → indicates shorted wiring or internal squib short
  • Deployment pulse: high-current firing pulse (milliseconds) — do not attempt to recreate or measure live firing pulse except with proper diagnostic equipment
  • Note: exact resistance and pulse values vary by manufacturer; always confirm with OEM spec before judging a component

Diagnostic algorithm

  1. Read and record all SRS codes and freeze-frame data with a qualified scan tool
  2. Confirm B0072 is current and note any related codes (airbag module, occupancy sensor, other pretensioners)
  3. Follow safety procedure: disconnect battery negative and wait the manufacturer-specified time before touching SRS components
  4. Visually inspect passenger pretensioner connector, seat harness, and routing for damage, corrosion, or loose pins
  5. With battery disconnected and connector unplugged, measure resistance across pretensioner terminals at the connector. Compare to manufacturer spec. If infinite or open, suspect open circuit or connector; if very low (near 0), suspect short or deployed squib
  6. If resistance at pretensioner is within spec, measure resistance/continuity from SRS module connector to pretensioner connector to locate wiring fault
  7. Repair or replace damaged wiring or connector as required. If squib resistance indicates deployment or internal short, replace the pretensioner assembly.
  8. If wiring and pretensioner check good, inspect SRS module connectors and grounds. If module output driver is suspected, consult OEM diagnostics—module replacement or repair may be required.
  9. After repairs, clear codes and perform SRS system self-test with scan tool. Verify no new codes and that SRS lamp extinguishes.
  10. If any step requires replacement of SRS components, follow OEM procedures for component replacement, crash-data handling, and post-repair system initialization or calibration

Likely causes

  • Damaged/shorted squib wiring between pretensioner and SRS module
  • Disconnected or corrosion-damaged connector at the passenger pretensioner
  • Pretensioner already deployed and not replaced
  • Faulty SRS control module output for Passenger Pretensioner A

Fault status

⚠️ Status
SRS warning: Passenger Seat Belt Pretensioner A deployment control circuit fault detected (open/short/out-of-range or deployed pretensioner).
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 1.5-3.0 hours

Similar codes

B0070 B0071 B0073 B0074 B0075
6,533

The library contains 6,533 repair and diagnostic manuals. Choose a brand to open the full manual tree by year, model and trim.

AUDI
1,160
DAEWOO
75
FIAT
26
GENESIS
207
HUMMER
138
HYUNDAI
371
ISUZU
86
LAND ROVER
320
LEXUS
1
LINCOLN
166
MERCEDES-BENZ
610
MERCURY
296
MITSUBISHI
406
PORSCHE
136
TESLA
58
TOYOTA
2,042
TRIUMPH
131
VOLKSWAGEN
139
VOLVO
165
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

B0072

LAND ROVER B — Body

of passengers

Brand: LAND ROVER
Type: B — Body
Views: UK: 15 EN: 57 RU: 28
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or short in the pretensioner (squib) wiring harness
  • Corroded or loose connector at the pretensioner or SRS module
  • Failed or previously-deployed passenger pretensioner (squib)
  • Faulty SRS/airbag control module or internal driver circuitry
  • Poor ground or battery supply to SRS system
  • Damage to wiring from seat movement, collision, or service work

Symptoms

  • SRS/airbag warning lamp illuminated on instrument panel
  • Seat belt pretensioner will not deploy when commanded
  • Diagnostic trouble code B0072 stored in airbag control unit
  • Possible disabled passenger airbag or restraint functions
  • Vehicle may fail safety inspections while the SRS lamp is on

What to check

  • Retrieve SRS fault codes and freeze-frame data with a compatible scan tool
  • Follow manufacturer safety procedure: disable the battery negative terminal and wait the specified time before handling SRS components
  • Visually inspect passenger seat area: connectors, harness routing, signs of collision damage or repairs
  • Inspect connector pins for corrosion, bent pins, or poor mating
  • With battery disconnected, measure squib resistance at the pretensioner connector and at the SRS module harness connector
  • Check continuity between pretensioner connector and SRS module; verify no short to ground or battery positive

Signal parameters

  • Typical squib resistance (passenger pretensioner): approx. 0.5–3.0 ohms (manufacturer-specific — confirm with vehicle data)
  • Open circuit: infinite resistance (OL) → indicates wiring open or disconnected
  • Short to ground/power: near 0 ohms → indicates shorted wiring or internal squib short
  • Deployment pulse: high-current firing pulse (milliseconds) — do not attempt to recreate or measure live firing pulse except with proper diagnostic equipment
  • Note: exact resistance and pulse values vary by manufacturer; always confirm with OEM spec before judging a component

Diagnostic algorithm

  1. Read and record all SRS codes and freeze-frame data with a qualified scan tool
  2. Confirm B0072 is current and note any related codes (airbag module, occupancy sensor, other pretensioners)
  3. Follow safety procedure: disconnect battery negative and wait the manufacturer-specified time before touching SRS components
  4. Visually inspect passenger pretensioner connector, seat harness, and routing for damage, corrosion, or loose pins
  5. With battery disconnected and connector unplugged, measure resistance across pretensioner terminals at the connector. Compare to manufacturer spec. If infinite or open, suspect open circuit or connector; if very low (near 0), suspect short or deployed squib
  6. If resistance at pretensioner is within spec, measure resistance/continuity from SRS module connector to pretensioner connector to locate wiring fault
  7. Repair or replace damaged wiring or connector as required. If squib resistance indicates deployment or internal short, replace the pretensioner assembly.
  8. If wiring and pretensioner check good, inspect SRS module connectors and grounds. If module output driver is suspected, consult OEM diagnostics—module replacement or repair may be required.
  9. After repairs, clear codes and perform SRS system self-test with scan tool. Verify no new codes and that SRS lamp extinguishes.
  10. If any step requires replacement of SRS components, follow OEM procedures for component replacement, crash-data handling, and post-repair system initialization or calibration

Likely causes

  • Damaged/shorted squib wiring between pretensioner and SRS module
  • Disconnected or corrosion-damaged connector at the passenger pretensioner
  • Pretensioner already deployed and not replaced
  • Faulty SRS control module output for Passenger Pretensioner A

Fault status

⚠️ Status
SRS warning: Passenger Seat Belt Pretensioner A deployment control circuit fault detected (open/short/out-of-range or deployed pretensioner).
🔴 Repair difficulty: Hard
⏱️ Diagnostic time: 1.5-3.0 hours

Similar codes

B0070 B0071 B0073 B0074 B0075
320

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

LAND ROVER

Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email

Report

Harassment or bullying behavior
Contains mature or sensitive content
Contains misleading or false information
Contains abusive or derogatory content
Contains spam, fake content or potential malware

Block Member?

Please confirm you want to block this member.

You will no longer be able to:

  • See blocked member's posts
  • Mention this member in posts
  • Invite this member to groups
  • Message this member
  • Add this member as a connection

Please note: This action will also remove this member from your connections and send a report to the site admin. Please allow a few minutes for this process to complete.

Report

You have already reported this .