B0035

Code

Generic B — Body

Driver Airbag Squib Circuit Fault

Brand: Generic

Type: B — Body

Views: UK: 11 EN: 77 RU: 13

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Open circuit in driver airbag squib wiring
Short to ground or short to battery/ignition in squib circuit
Faulty driver airbag (squib) or connector
Damaged/failed clockspring (steering wheel spiral cable)
Corroded or poorly seated connector pins at the airbag or SRS module
Faulty airbag control module or internal driver circuit fault

Symptoms

SRS/Airbag warning lamp illuminated on instrument panel
Driver airbag indicator may show as fault in scan tool
Possible intermittent SRS light (wakes with movement or temperature change)
Vehicle fails safety inspection / airbag system disabled for driver side

What to check

Use a CAN-capable scan tool to read SRS codes and freeze-frame data; note any additional B-codes
Visually inspect steering wheel area, clockspring, and driver airbag connector for damage, corrosion or loose pins
Check for signs of recent steering/airbag work or aftermarket components
With ignition OFF and battery disconnected per OEM procedure, inspect wiring for chafing or breaks in the harness between steering column and airbag
Measure squib resistance with connector disconnected (see signal_params)
Check for continuity between squib circuit and chassis ground or battery (+12V) to detect shorts (with power removed)

Signal parameters

Driver airbag squib (typical): low resistance, commonly around 2–5 ohms when measured across the squib terminals (exact spec varies by vehicle — consult OEM)
Open circuit: very high resistance / infinite (OL) — indicates broken conductor or open connector
Short to battery/ground: near 0 ohms to +12V or to chassis ground respectively (indicates short in harness or damaged squib)
SRS module will show DTC B0035 and may log related historical data (voltage, ignition state) in freeze-frame

Diagnostic algorithm

Safety: consult OEM service manual. Disable SRS power by disconnecting battery negative and wait the manufacturer-specified time before touching airbag components.
Scan and document all SRS codes and freeze-frame/failure counts with a capable scan tool.
Perform visual inspection of steering column area, driver airbag connector (behind wheel), and wiring harness for damage, corrosion, disconnected connectors, or aftermarket alterations.
Disconnect driver airbag connector (with power removed). Measure resistance across the squib terminals using a digital ohmmeter. Compare to OEM specification (typically low ohms; an open or very high reading indicates a break).
Check for continuity from the squib circuit to chassis ground and to vehicle battery +12V with connectors disconnected to detect unwanted shorts.
If resistance is out of range, inspect and repair wiring between the airbag and SRS module; pay particular attention to the clockspring — remove steering wheel per service manual to inspect/replace as required.
If wiring and clockspring test OK but resistance indicates a faulty squib, replace the driver airbag module (do not attempt internal repairs).
After repairs, clear codes with the scan tool, reconnect battery per OEM procedure, and perform SRS system self-test. Confirm that the SRS lamp extinguishes and no related codes return.
If fault persists after wiring and component checks, consider replacement or bench testing of the airbag control module per OEM guidance or consult a dealership/airbag-specialist.
Document repairs and verify system is fully functional before returning vehicle to service.

Likely causes

Broken or pinched wire in steering column wiring harness
Worn or broken contacts in clockspring from steering wheel movement
Corrosion or bent pins in the airbag connector under the steering wheel
Open or high-resistance squib (broken conductor inside airbag)
Shorted squib due to damaged insulation contacting chassis or power

Fault status

⚠️ Status

B0035 — Driver airbag squib circuit fault. SRS warning light on; driver airbag circuit shows open/short/incorrect resistance. Driver airbag may be disabled until repaired.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1-3 hours