B0049 medium Severity

B0049: Third Row Right Frontal Stage 1 Deployment Control (Subfault)

No direct impact on engine or drivetrain performance but affects safety restraint system operation.

Overview

B0049 indicates an SRS airbag system fault related to Third Row Right Frontal Stage 1 deployment control subfault.

Common Symptoms

  • SRS/Airbag warning light illuminated
  • Code B0049 present on SRS scan
  • Possible third‑row right frontal airbag disarm or inactive
  • No drivability issues

Most Common Causes

Wiring harness damage or poor connection in SRS third‑row right frontal circuit high

Frayed wires, pinched harness, or corroded connectors under seats commonly trigger B0049.

Faulty SRS control module or internal Stage 1 driver failure medium

Module electronics failure can report incorrect circuit readiness.

Corroded contacts or poor connector seating medium

Moisture intrusion or handling can reduce signal integrity.

Actual airbag squib or igniter circuit defect low

Rare but possible in case of manufacturing defect or prior deployment stress.

Diagnostic Steps

  1. Connect a dedicated SRS scan tool and confirm B0049 and related codes.
    Expected: Code B0049 present; review live SRS data.
    Interpretation: Confirms system has logged a fault tied to third‑row right frontal stage 1.
  2. Visually inspect wiring harness from airbag to SRS module, focusing under the third‑row seat.
    Expected: No broken wires, no corrosion, good connector seating.
    Interpretation: Visible damage supports wiring cause.
  3. Perform continuity resistance measurement of the squib circuit with battery disconnected.
    Expected: Resistance < specified threshold (~<5Ω typical)
    Interpretation: High resistance indicates wiring/connectivity issue.
  4. Test SRS module communication using scan tool communication test.
    Expected: Module responds without timeouts or errors.
    Interpretation: Intermittent/no response suggests module or bus issue.

Repair Solutions

Repair or replace damaged wiring/connectors in SRS circuit medium
Estimated Cost: $150 - $400

Cost varies with access complexity and parts.

Clean and secure corroded connectors; apply dielectric grease easy
Estimated Cost: $10 - $50

Basic hardware and labor if accessible.

Replace SRS control module with VIN matched unit and reprogram hard
Estimated Cost: $1000 - $1500

Requires dealership or professional tools for programming.

Common Misdiagnoses

Avoid these common diagnostic mistakes:

  • Assuming generic airbag fault without isolating specific third‑row right frontal circuit issues
  • Replacing only the SRS control module without wiring inspection

Frequently Asked Questions

Can you explain the meaning of B0049?

Technically, the B0049 code represents Third Row Right Frontal Stage 1 Deployment Control (Subfault). It usually points to a fault within the Sensors.

Should I stop driving if I have B0049?

This is a medium priority issue. No direct impact on engine or drivetrain performance but affects safety restraint system operation.

Common signs of the B0049 error code

Common symptoms include: SRS/Airbag warning light illuminated, Code B0049 present on SRS scan, Possible third‑row right frontal airbag disarm or inactive. You might also notice the Check Engine Light is on.

Potential causes for OBDII code B0049

The most common causes are: Wiring harness damage or poor connection in SRS third‑row right frontal circuit, Faulty SRS control module or internal Stage 1 driver failure, Corroded contacts or poor connector seating.

What is the price difference for fixing B0049?

It depends on what needs to be fixed. Clean and secure corroded connectors; apply dielectric grease repairs are cheaper (~$50), while Replace SRS control module with VIN matched unit and reprogram repairs are on the higher end (~$1500).

What cars are affected by the B0049 code?

Yes, B0049 is a generic code that applies to all OBD-II compliant vehicles, including Ford, Toyota, Honda, Chevrolet, Nissan, Dodge, BMW, and more.

User Comments (0)

Share your experience or ask a question about this code.

Be the first to share your experience with B0049!