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Diagnostic knowledge / B004A — Third Row Right Frontal Stage 2 Deployment Control
B004A

Third Row Right Frontal Stage 2 Deployment Control

B004A is described as “Third Row Right Frontal Stage 2 Deployment Control” in the Generic OBD2 reference.

Some scan tools (for example GM and Ford dealer tools) display this code with a failure-type suffix, such as B004A-00 or B004A:00; the base code B004A is the same.

Generic OBD2

Generic OBD2: B004A

en

Third Row Right Frontal Stage 2 Deployment Control

Reference namespace
obd2
Source revision
legacy-2.2.20

Generic OBD2 definition; confirm the protocol and vehicle-specific service information.

What should I check before using this definition?

Keep the full code, module, status and freeze-frame data. Confirm the vehicle’s make, model, year and current manufacturer service information before choosing a repair. This entry does not identify a failed part by itself.

Organize a scan report or recording
Source and applicability

OBD Lens production library legacy-owner-2026-11-02-v84-evidence. This is a scoped technical reference, not a scan of your car. A catalog relationship does not certify that every ECU, year or engine returns the same signal or code definition.

Read the reference method

OBD Lens reference library · catalog legacy-owner-2026-11-02-v84-evidence. Sources and scope