B0002

Code

Generic B — Body

Driver Frontal Stage 2 Deployment Control

Brand: Generic

Type: B — Body

Views: UK: 60 EN: 353 RU: 119

AI status

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Page language: EN

Causes

Open or high resistance in the driver frontal stage 2 squib circuit
Short to ground or battery in the squib wiring
Corroded, damaged, or loose connector at the airbag module, clockspring, or SRS control unit
Faulty driver airbag module (stage 2 squib)
Faulty steering column clockspring (slip ring) or steering wheel connector
Faulty SRS (airbag) control module or internal driver channel electronics

Symptoms

Airbag warning lamp illuminated or flashing on instrument panel
Driver airbag disabled (possible function loss of stage 2 inflator)
Stored SRS fault code(s) including B0002 and possibly related B-codes
Possible loss of related steering-wheel functions (horn, steering switches) if clockspring damaged
Failure of vehicle safety inspection related to SRS lamp

What to check

Read and record all SRS and related codes with a capable scan tool, note freeze frame and DTC history
Verify battery voltage is within specification before and during testing
Visually inspect wiring, connectors, and harness routing to driver airbag, clockspring, and SRS module for damage, corrosion, pin push-out, or repairs
Check for corrosion or bent pins at the airbag connector and SRS control module connector
Measure squib continuity/resistance per vehicle service manual (compare to spec)
Check continuity to ground and for shorts to battery voltage on squib circuit

Signal parameters

Driver stage 2 squib resistance (typical low-ohm value; consult vehicle service manual for exact spec)
Open-circuit (infinite) indicates broken/open wiring or disconnected squib
Very low or near-zero resistance can indicate a shorted squib or short to ground
No communication to SRS control module will show on scan tool if module is not powered or has internal fault
Recorded freeze-frame battery voltage at time of fault (should be within spec)

Diagnostic algorithm

Retrieve and record all SRS codes, freeze-frame data and pending codes using a manufacturer-capable scan tool.
Verify stable battery voltage (recommended >12V) and good grounds before performing tests.
Follow SRS safety procedures: disable battery negative terminal and wait the manufacturer-specified time before touching SRS components.
Perform a careful visual inspection of the driver airbag connector, wiring harness, clockspring, and SRS control module for damage, corrosion, or previous repair work.
With proper safety precautions and service manual procedures, measure resistance of the driver stage 2 squib at the airbag connector and at the SRS module connector. Compare readings to the service specification.
Check for continuity between the squib circuit and chassis ground and for shorts to battery voltage. Wiggle harnesses and connectors while monitoring resistance to look for intermittent faults.
If the squib and wiring are within spec, verify SRS module power, ground, and communications. Re-seat connectors and clear fault codes, then perform an SRS system self-test.
If an open/short is found in wiring or a failed connector, repair or replace the wiring/connector per service manual and re-test.
If measurements indicate a faulty airbag squib, replace the driver airbag module and verify correct part and installation procedures.
If wiring and airbag check good and code persists, consider SRS control module fault—verify module programming and replace only after confirming necessity. Perform all required post-repair SRS initializations and clear codes.
After repairs, clear codes and confirm the SRS lamp extinguishes and no DTCs return. Perform a road test and final scan per manufacturer instructions.

Likely causes

Damaged wiring harness between SRS control module and driver airbag
Failed or shorted stage 2 squib inside the driver airbag
Faulty or contaminated connector at the airbag or clockspring
Worn or broken clockspring contacts causing intermittent open/short
SRS control module fault after impact or surge

Fault status

⚠️ Status

Abnormal condition detected in driver frontal stage 2 deployment control circuit — open, short, or out-of-spec resistance. SRS lamp illuminated; driver stage 2 inflator may be disabled.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-3.0 hours