B0023

Code

Generic B — Body

Airbag Squib Circuit Short to Ground

Brand: Generic

Type: B — Body

Views: UK: 27 EN: 24 RU: 24

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Page language: EN

Causes

Damaged or chafed wiring harness contacting chassis ground
Shorted or corroded squib/connector pins
Faulty airbag inflator (squib) internal short
Defective or damaged clockspring (driver airbag circuits)
Poor or missing connector insulation, water intrusion or corrosion
Faulty SRS control module or internal connector short

Symptoms

SRS/Airbag warning lamp illuminated on instrument cluster
Possible related DTCs for other SRS components
Loss of airbag function for the affected circuit
Possible intermittent SRS lamp when harness is moved or steering wheel turned

What to check

Confirm the SRS warning lamp is illuminated and retrieve diagnostic trouble codes with a scan tool that supports SRS.
Record any freeze-frame or related codes before clearing.
Visually inspect airbag harnesses, connectors, clockspring area (if driver airbag), and under-dash/seat wiring for chafing, pin damage, corrosion, or aftermarket wiring taps.
Ensure vehicle battery is disconnected and SRS capacitors are allowed to discharge per manufacturer recommendation before touching airbag wiring (common safe practice: disconnect negative battery and wait at least 10 minutes, or follow OEM procedure).
Check connector pin condition and for presence of moisture or corrosion.
Measure squib circuit resistance with the SRS harness disconnected from the airbag module (ohmmeter).

Signal parameters

Typical airbag squib resistance (measured with circuits disconnected and battery off): low single-digit ohms (commonly around 0.5–5 Ω depending on vehicle). Refer to OEM spec for exact value.
Open/infinite resistance indicates an open circuit; near-zero or near 0 Ω suggests a direct short.
With ignition on (do not attempt with connectors connected when performing live firing tests): SRS wiring may see battery voltage on certain terminals during system checks — do not attempt to trigger a squib.
Continuity test between squib circuit and chassis ground should be high (open). Low resistance indicates a short to ground.

Diagnostic algorithm

Retrieve codes and note any related SRS codes and freeze-frame data with an SRS-capable scan tool.
Follow safety: disable the SRS system per OEM procedure — disconnect battery negative and wait recommended time (commonly 10 minutes) before touching connectors. Use manufacturer instructions when available.
Visually inspect connectors, wiring runs, and harnesses for damage, chafing, pin corrosion, or aftermarket splices starting from the affected airbag back to the SRS module.
Identify which squib circuit/connector the code references (driver, passenger, side, seatbelt pretensioner) and isolate that circuit by disconnecting the airbag connector at the inflator or seat module.
With harness disconnected from the airbag and battery still disconnected, measure resistance across the squib terminals using an ohmmeter. Compare to OEM spec; a very low resistance suggests a short, very high/infinite suggests an open.
Measure resistance from the squib circuit conductor to chassis ground. Low resistance indicates a short to ground in harness wiring or connector.
If short to ground is present at the connector, trace wiring toward the SRS module, inspecting and disconnecting intermediate connectors to localize the short location (steering column, under-dash, seat harness).
If diagnostics isolate the fault to a clockspring, replace the clockspring assembly following OEM procedures (alignment and center position required).
If the squib/inflator shows an internal short (confirmed at connector with inflator disconnected from harness and tests per OEM), replace the inflator/airbag assembly only using OEM parts and safety procedures.
Repair wiring or connector faults using appropriate SRS-approved repair methods (replace damaged wiring, use OEM replacement harnesses or terminals). Avoid makeshift splices on squib circuits.
After repairs, reconnect battery, clear codes with the scan tool, and perform SRS system self-check. Verify that the SRS warning lamp goes out and no related codes return.
If SRS control module replacement or reprogramming is required, perform initialization/adaptation with the proper diagnostic tool and procedures.

Likely causes

Chafed/damaged wiring contacting chassis ground in the steering column or under dash (most common)
Damaged squib connector or corroded pins at the airbag connector
Faulty clockspring (for driver/front airbag circuits)
Defective squib/inflator (internal short)

Fault status

⚠️ Status

B0023 — Airbag Squib Circuit Short to Ground. SRS controller detected a ground fault on an airbag squib circuit. SRS warning lamp is likely on; inspect wiring, connectors, clockspring, and squib/inflator for faults.

🔴 Repair difficulty: Hard

⏱️ Diagnostic time: 1-3 hours