B0089

Code

Generic B — Body

Driver Airbag Squib Circuit Malfunction

Brand: Generic

Type: B — Body

Views: UK: 11 EN: 51 RU: 12

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Open or short in driver airbag squib wiring
Poor or corroded connector at the airbag module, steering wheel, or SRS connector
Faulty clockspring/spiral cable in the steering column
Failed driver airbag module (squib/igniter)
Faulty airbag control module (rare)
Previous improper repairs or pinched wiring after steering column work

Read SRS system with an appropriate scan tool to confirm B0089 and note freeze frame and related codes
Visually inspect wiring and connectors at the driver airbag, clockspring, and under-dash SRS connectors
Verify SRS fuse(s) and primary vehicle battery voltage are within spec
Check for previous repair evidence or harness damage near the steering column
Do not attempt to deploy or power the squib; follow vehicle manufacturer safety procedures before handling

Expected driver squib resistance (typical): ~2–3.5 ohms (vehicle-specific; consult manufacturer spec)
Open circuit: infinite/OL on ohmmeter
Short to ground or low resistance: values well below specified (e.g.,
Intermittent readings or large changes with steering wheel movement suggest clockspring failure
SRS module will report circuit fault if resistance out-of-range or intermittent

Retrieve and record all SRS/airbag codes and freeze-frame data with a compatible scan tool.
Confirm vehicle manufacturer procedures for SRS service. Disable ignition and remove battery negative terminal; wait manufacturer-specified time (commonly 90 seconds or longer) before working near airbag components.
Visually inspect steering wheel airbag connector, clockspring, and wiring harness for damage, corrosion, or loose pins.
With battery disconnected and manufacturer procedure followed, measure resistance of the driver airbag squib circuit at the airbag module connector and at the SRS module connector. Compare to vehicle-specific spec. Do NOT apply external power to the squib.
Perform continuity checks between the SRS ECU connector and steering wheel airbag connector to locate opens or shorts. Wiggle the steering wheel and harness while monitoring continuity to detect intermittent faults.
If resistance is high or intermittent and wiring/connectors are good, remove and inspect the clockspring. Replace if worn, damaged, or intermittent.
If wiring and clockspring are good but resistance remains out of spec at both ends, replace the driver airbag module (squib). Always dispose and handle per safety rules.
After repairs, clear codes with the scan tool and perform a system check. Confirm the SRS lamp extinguishes and no related DTCs return. If codes persist, suspect SRS ECU fault and proceed per manufacturer diagnostics.