B1930 — Air Bag Safing Sensor Output Circuit Short To Ground

B1930 — Air Bag Safing Sensor Output Circuit Short To Ground. A fault in the airbag / restraint system (SRS). Short, gentle driving to a shop is usually possible. Typical causes: depleted backup battery or low system voltage, damaged wiring under seats or in the steering column, SRS control module fault or stored crash data.

body electrical

Is it safe to drive?

Drive with caution The car drives normally, but with the SRS light on the airbags may not deploy in a crash. Treat it as a safety-critical repair: fine to drive to the shop, not fine to ignore for months.

How to diagnose with an OBD scanner

Read the code and freeze frame Connect an OBD2 scanner, confirm B1930 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
Check for companion codes and TSBs Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many B0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
Inspect wiring and connectors Visually inspect the wiring harness and connectors related to the airbag / restraint system (SRS) for damage, corrosion, chafing or poor contact.
Subsystem check Read the SRS module with a scanner that supports airbag systems — generic OBD2 readers cannot see these codes.
Subsystem check Inspect under-seat connectors — they are often disturbed by seat movement or cleaning.
Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm B1930 does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for B1930 (parts and labor, USD, independent shop rates): Reconnect or repair SRS wiring/connectors: $80–$250; SRS module reset or replacement: $300–$1,000; Replace a sensor or clockspring: $150–$500. Overall, fixing B1930 usually costs between $80 and $1,000. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Common questions

What does OBD2 code B1930 mean?

What is the most common cause of B1930?

The most common causes are: depleted backup battery or low system voltage, damaged wiring under seats or in the steering column, SRS control module fault or stored crash data.

How much does it cost to fix B1930?

Reconnect or repair SRS wiring/connectors — $80–$250; SRS module reset or replacement — $300–$1,000; Replace a sensor or clockspring — $150–$500. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.

Is it safe to drive with B1930?

The car drives normally, but with the SRS light on the airbags may not deploy in a crash. Treat it as a safety-critical repair: fine to drive to the shop, not fine to ignore for months.

How do I diagnose B1930 myself?

Start with a scan: confirm B1930, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the airbag / restraint system (SRS), and verify the suspect component against live data before buying parts.

The supplemental restraint system (SRS) in your vehicle relies on a network of sensors, control modules, and squibs to deploy airbags in a crash. One critical component in this chain is the safing sensor, which acts as a final check before the system fires. Code B1930 indicates that the control module has detected a short to ground in the output circuit of that safing sensor — essentially, electrical current is bleeding to the vehicle frame when it shouldn't be.

When the SRS module continuously monitors this circuit while the engine runs, it expects specific resistance values and voltage patterns. If those readings stray outside factory specifications for long enough, the module logs B1930 and illuminates the airbag warning light on the dash. This is a passive fault, meaning the car will still drive, steer, and brake normally — but the restraint system may not protect you if a collision occurs.

Because the stored freeze frame captures engine speed, load, temperature, and vehicle speed at the exact moment the fault appeared, that snapshot becomes your diagnostic starting point. The conditions recorded can point you toward whether the issue is related to seat movement, a wiring chafe, or something triggered by a specific driving situation.

Symptoms of B1930

Supplemental restraint system disabled warning message
Airbag (SRS) warning light illuminated on instrument cluster
No perceptible changes to engine performance, braking, or handling
Possible intermittent warning light behavior
May set alongside other SRS fault codes
Cluster may display diagnostic readiness failures for the restraint system

Common Causes of B1930

Damaged or pinched wiring beneath the front seats
Corrosion or poor contact at SRS harness connectors
Faulty clockspring in the steering column (spiral cable failure)
Failed safing sensor or frontal impact sensor
Crashed or crash-saturated SRS control module requiring reset
Low system voltage or depleted backup capacitor
Connector pins backing out from vibration or previous repairs

How to Diagnose B1930

Connect a scanner capable of reading chassis codes — not just generic powertrain codes — to confirm B1930 is present. Save the freeze frame data before clearing anything.
Check for any related SRS codes stored simultaneously. Clustered codes often point to the actual root cause rather than the symptom.
Perform a thorough visual inspection of the SRS wiring harness, paying close attention to the areas under both front seats, the steering column boot, and the module connections. Look for rubbed insulation, melted wire, or moisture intrusion.
Test the circuit resistance and ground integrity using a multimeter with the battery disconnected and the module unplugged. Compare readings to manufacturer specifications.
If no wiring faults are found, verify the clockspring resistance and continuity — this component fails frequently on vehicles with steering wheel-mounted driver airbags.
Clear the code, then operate the vehicle through a complete drive cycle that replicates the freeze frame conditions. Observe whether B1930 returns.

Repair Options for B1930

Wiring repair or connector replacement: $80–$250
SRS module replacement (new or salvage with reprogramming): $300–$1,000
Clockspring replacement: $150–$500
Safing sensor or impact sensor replacement: $150–$350

Total Cost to Fix B1930

Most shops charge between $80 and $250 for diagnosis and wiring repairs. If the module itself is at fault, expect $300–$1,000 including programming. Clockspring and sensor replacements typically land in the $150–$500 range. The total bill hinges entirely on which component is actually faulty, and an accurate diagnosis before purchasing parts is the best way to avoid overspending. In most cases, the safing sensor output short to ground stems from damaged wiring — the least expensive fix — so work through the cheaper possibilities before committing to module replacement.

Can You Drive with B1930?

Yes, the vehicle remains mechanically drivable with B1930 stored. The engine, transmission, and chassis systems are unaffected. However, with the SRS warning light active, the airbags will not deploy in a collision. This is classified as a safety-critical concern — acceptable to operate briefly while arranging repairs, but not something to leave unresolved for weeks or months. Schedule service promptly and avoid modifying the restraint system yourself due to the risk of accidental deployment.