B007A medium Severity

B007A: Passenger Seatbelt Pretensioner B Deployment Control (Subfault)

May illuminate airbag/SRS warning and compromise safety restraint readiness; generally does not affect engine performance.

Overview

B007A is a body system OBD-II code indicating a fault with the passenger seatbelt pretensioner B deployment control circuit, often due to wiring or component issues affecting the airbag safety system.

Common Symptoms

  • Airbag/SRS warning light illuminated
  • Diagnostic scan shows B007A stored in SRS module
  • Possible seatbelt pretensioner circuit fault indications

Most Common Causes

Faulty passenger seatbelt pretensioner component medium

Component failure can trigger the subfault code due to internal defect or wear.

Open or shorted wiring harness in pretensioner circuit high

Electrical issues (open/short) are frequently identified as triggers for this code in technical references.

Poor electrical connection/corrosion at connectors medium

Connector and contact problems can lead to intermittent or persistent fault signals.

Faulty airbag control module or communication error low

Less common cause; may require module testing if wiring and component checks pass.

Diagnostic Steps

  1. Perform visual inspection of pretensioner wiring and connectors at passenger seat and SRS control module.
    Expected: No damage, corrosion, or loose connections present.
    Interpretation: If damage or poor connections found, repair; if none found, proceed.
  2. Using scan tool, read B007A code and any stored freeze frame data from SRS module.
    Expected: Code present with no additional module errors.
    Interpretation: Confirms the code pertains to pretensioner B circuit.
  3. Check continuity and resistance of pretensioner circuit wiring using multimeter.
    Expected: Continuity and resistance values within manufacturer spec.
    Interpretation: If open/short condition found, repair wiring or connector.
  4. Test pretensioner component for proper electrical response per spec.
    Expected: Component responds within acceptable range.
    Interpretation: If defective, replace component.
  5. Clear codes and verify whether B007A returns after system reset and key cycles.
    Expected: No recurrence of B007A.
    Interpretation: If code returns, deeper SRS module or wiring harness issue likely.

Repair Solutions

Repair or replace damaged pretensioner wiring harness/connectors medium
Estimated Cost: $100 - $400

Cost varies with labor and complexity of seat removal.

Replace faulty passenger seatbelt pretensioner component medium
Estimated Cost: $200 - $600

Component cost can be significant depending on vehicle.

Service or replace airbag control/SRS module if proven faulty hard
Estimated Cost: $500 - $1500

High cost if module programming required; considered if all other causes excluded.

Common Misdiagnoses

Avoid these common diagnostic mistakes:

  • Confusing with general airbag (SRS) faults not specific to pretensioner B
  • Assuming battery or charging system issue without proper SRS circuit tests

Frequently Asked Questions

Can you explain the meaning of B007A?

Technically, the B007A code represents Passenger Seatbelt Pretensioner B Deployment Control (Subfault). It usually points to a fault within the Sensors.

How serious is the B007A code?

With a severity level of medium, may illuminate airbag/SRS warning and compromise safety restraint readiness; generally does not affect engine performance.

Symptoms associated with DTC B007A

Drivers often report: Airbag/SRS warning light illuminated, Diagnostic scan shows B007A stored in SRS module, Possible seatbelt pretensioner circuit fault indications when this code is present.

Common triggers for the B007A error

Potential culprits include: Faulty passenger seatbelt pretensioner component, Open or shorted wiring harness in pretensioner circuit, Poor electrical connection/corrosion at connectors. A proper diagnosis is recommended.

What is the price difference for fixing B007A?

Expect to pay around $400 if the issue is a Repair or replace damaged pretensioner wiring harness/connectors, but up to $1500 if the Service or replace airbag control/SRS module if proven faulty needs replacement.

Is B007A a generic or manufacturer-specific code?

Yes, B007A is a generic code that applies to all OBD-II compliant vehicles, including Ford, Toyota, Honda, Chevrolet, Nissan, Dodge, BMW, and more.

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