B007B: Second row left seatbelt pretensioner 'B' deployment control (subfault)

May illuminate airbag/safety warning but generally does not prevent vehicle operation; safety restraint system affected

Overview

OBD-II code B007B indicates a fault detected in the second‑row left seatbelt pretensioner 'B' deployment control circuit or component, often due to wiring or seatbelt pretensioner issues in the vehicle body safety restraint system.

Common Symptoms

Airbag or Supplemental Restraint System warning light illuminated
Seatbelt pretensioner circuit fault indicated by scan tool

Most Common Causes

Faulty second row left seatbelt pretensioner medium

Component failure in pretensioner device possibly preventing proper deployment

Wiring harness open, shorted, or poor connection in pretensioner circuit medium

Electrical faults such as short to ground, open circuit or poor connector contacts can trigger the code

Poor electrical connection to airbag control module low

Intermittent connection to the airbag ECU may falsely set this code

Diagnostic Steps

Connect a professional OBD‑II scan tool and confirm the presence of code B007B

Expected: Code B007B should be present with or without subcodes

Interpretation: Confirms the fault is current or stored in the restraint system
Perform a visual inspection of the second row left seatbelt pretensioner wiring and connectors

Expected: No damaged wires, corrosion, or loose connectors

Interpretation: Identifies obvious electrical issues that may cause the code
Measure circuit continuity and resistance in the seatbelt pretensioner circuit with a multimeter

Expected: Continuity within manufacturer specification, no shorts to ground or power

Interpretation: Verifies integrity of wiring harness and pretensioner circuit
If wiring is intact, test or replace the second row left seatbelt pretensioner assembly

Expected: No fault present after component replacement and scan tool reset

Interpretation: Component failure likely if code clears and does not return

Repair Solutions

Repair or replace damaged seatbelt pretensioner wiring/connectors medium

Estimated Cost: $50 - $200

Costs vary depending on labor and extent of wiring repair

Replace second row left seatbelt pretensioner assembly hard

Estimated Cost: $200 - $600

Pretensioner assemblies are safety devices and may require airbag system reset

Common Misdiagnoses

Avoid these common diagnostic mistakes:

Assuming general airbag ECU fault without inspecting specific seatbelt pretensioner circuit

Frequently Asked Questions

What does the B007B code mean?

When your OBD-II scanner reads B007B, it means: Second row left seatbelt pretensioner 'B' deployment control (subfault). This code is related to the vehicle's Sensors.

Can B007B cause engine damage?

This is a medium priority issue. May illuminate airbag/safety warning but generally does not prevent vehicle operation; safety restraint system affected

What happens when the B007B code is active?

Common symptoms include: Airbag or Supplemental Restraint System warning light illuminated, Seatbelt pretensioner circuit fault indicated by scan tool. You might also notice the Check Engine Light is on.

What parts fail when B007B is set?

It can be caused by several factors, most notably: Faulty second row left seatbelt pretensioner, Wiring harness open, shorted, or poor connection in pretensioner circuit, Poor electrical connection to airbag control module.

Is B007B expensive to fix?

It depends on what needs to be fixed. Repair or replace damaged seatbelt pretensioner wiring/connectors repairs are cheaper (~$200), while Replace second row left seatbelt pretensioner assembly repairs are on the higher end (~$600).

Is the B007B code specific to Dodge?

This is a universal code. You might see B007B on Ford, Chevrolet, Toyota, Honda, Nissan, or any other OBD-II vehicle.

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