B0048 high Severity

B0048: Third Row Right Side Airbag Deployment Control (Subfault)

May disable or inhibit proper deployment of the right‑side airbag in the third row and illuminate the SRS/airbag warning lamp.

Overview

DTC B0048 refers to a diagnostic trouble code related to the third row right side airbag deployment control circuit or module fault; it involves the SRS/airbag system and electrical circuits.

Common Symptoms

  • Airbag warning light illuminated on the dashboard
  • SRS / supplemental restraint system warning
  • Possible front passenger airbag deactivation
  • Error stored in ECU memory

Most Common Causes

Faulty airbag control circuit or module medium

Control module or circuit has an internal fault affecting correct airbag deployment signals.

Wiring harness damage or short/open circuit high

Broken, shorted or high resistance wiring in the airbag deployment circuit often triggers the code.

Connector contact corrosion or poor connection medium

Corroded or loose connector contacts at airbag or SRS module can lead to signal faults.

Airbag component failure low

Physical damage or internal fault in the airbag unit itself can contribute, though less common.

Diagnostic Steps

  1. Connect a properly rated diagnostic scanner and retrieve stored codes from the SRS/airbag module.
    Expected: Presence of B0048 along with any related SRS codes.
    Interpretation: Confirms that the right side SRS circuit fault is active in ECU memory.
  2. Visually inspect airbag wiring harness and connectors under the third row/right side seat for damage, corrosion, or loose connections.
    Expected: No broken wires, no detached or corroded connectors.
    Interpretation: Visible damage indicates likely cause; absence requires deeper testing.
  3. Measure continuity and resistance of the suspect airbag deployment circuit with a multimeter.
    Expected: Circuit should have continuity within OEM specification, no shorts to power or ground.
    Interpretation: Open or shorted circuits indicate electrical fault in harness or connectors.
  4. Test or replace the SRS control module if circuit and connectors pass inspection.
    Expected: No faults present after module replacement and reset.
    Interpretation: Persistent code after wiring and connector repair suggests module failure.

Repair Solutions

Repair or replace damaged wiring and connectors medium
Estimated Cost: $50 - $300

Cost and time vary depending on access and level of wire harness disassembly.

Replace SRS/airbag control module if faulty hard
Estimated Cost: $300 - $800

Module replacement requires programming/calibration on many vehicles.

Replace the affected airbag component medium
Estimated Cost: $200 - $600

Only if component tests confirm failure; often last resort.

Common Misdiagnoses

Avoid these common diagnostic mistakes:

  • Interpreting B0048 as a generic engine or transmission error due to numeric similarity
  • Attempting to clear the code by disconnecting the battery instead of addressing circuit/sensor issues

Frequently Asked Questions

Can you explain the meaning of B0048?

When your OBD-II scanner reads B0048, it means: Third Row Right Side Airbag Deployment Control (Subfault). This code is related to the vehicle's Sensors.

Should I stop driving if I have B0048?

This is a high priority issue. May disable or inhibit proper deployment of the right‑side airbag in the third row and illuminate the SRS/airbag warning lamp.

Common signs of the B0048 error code

Common symptoms include: Airbag warning light illuminated on the dashboard, SRS / supplemental restraint system warning, Possible front passenger airbag deactivation. You might also notice the Check Engine Light is on.

Potential causes for OBDII code B0048

It can be caused by several factors, most notably: Faulty airbag control circuit or module, Wiring harness damage or short/open circuit, Connector contact corrosion or poor connection.

What is the price difference for fixing B0048?

It depends on what needs to be fixed. Repair or replace damaged wiring and connectors repairs are cheaper (~$300), while Replace SRS/airbag control module if faulty repairs are on the higher end (~$800).

Is the B0048 code specific to Dodge?

The B0048 code is a generic powertrain code, meaning it applies to almost all makes and models, such as Honda, Toyota, VW, Ford, and Chevy.

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