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Severity: High Code type: Generic (all makes)

B0010 Code: Passenger Frontal Stage 1 Deployment Control

The airbag module found a fault in the first-stage firing loop of the front passenger's dashboard airbag.

Safety first · Consult a professional

  • Airbag (SRS) circuits must only be serviced by a professional. Never probe airbag connectors — accidental deployment causes serious injury.

At a glance

Severity: 4/5 – High4/5

Severity: High

Meaning
Passenger Frontal Stage 1 Deployment Control
System
Body Systems · Body
Safe to drive?
With caution
Typical repair cost
$100–$1,800
DIY difficulty
Professional only

The front passenger airbag sits in the top of the dashboard, usually above the glovebox, and on most modern cars it has one or two igniter stages. B0010 means the airbag control module measured the stage 1 loop out of its allowed range: open, shorted to ground or voltage, or with the resistance too high or too low. The loop is short and does not pass through any moving part, so the usual suspects are the connector behind the glovebox, a harness disturbed during dash work, or moisture from a leak on the passenger side. This is a different problem from a lit PASSENGER AIRBAG OFF lamp: that lamp only reports that the occupant sensing system has switched the bag off on purpose, while B0010 is an electrical fault in the firing circuit itself. With the code active, the passenger airbag should be assumed inoperative.

How to read B0010

How to read B0010B10203104
  1. B Body
  2. 0 Generic (SAE)
  3. 0 Body Systems
  4. 10 Specific fault

Symptoms

  • Airbag warning light stays on after the self-test
  • Code appeared after glovebox, dashboard, stereo, blower motor or heater core work
  • Code appeared after an airbag recall or passenger airbag replacement
  • Wet carpet in the passenger footwell or a damp smell (leaking cowl or windshield)
  • Sometimes stored with an occupant classification fault (B00A0)

Possible causes

Ranked by how often each cause is behind this code (editorial estimate).

  1. Passenger airbag connector behind the glovebox loose or not locked after dash or recall work 32%
  2. Corrosion in the connector or harness from a water leak on the passenger side 20%
  3. Stage 1 igniter of the passenger airbag out of range 17%
  4. Harness pinched or chafed by dash brackets or the glovebox frame 15%
  5. Wrong or incompatible replacement airbag installed 9%
  6. Airbag control module fault 7%

Diagnosis step by step

Diagnostic flow: B00101Read the SRS module2Separate an OFF lamp from a realfault3Recall and repair history4Check the passenger footwell forwater5Leave the loop test to a technician6Repair and confirm

  1. Read the SRS module

    A scan tool with airbag access reads B0010 and the failure subtype. Also check whether stage 2 (B0011 on SAE-based systems) or the occupant sensing system has codes, because a shared connector or harness often explains several at once.

    Tools: OBD-II scanner

  2. Separate an OFF lamp from a real fault

    If only the PASSENGER AIRBAG OFF lamp is lit while the main airbag light is off, the system is working as designed for an empty seat or child seat. B0010 always brings the main SRS warning light on.

  3. Recall and repair history

    Ask whether the passenger airbag was replaced under a recall or after a crash, or if the dash was apart for climate or audio repairs. An unlatched secondary lock on the airbag plug is a typical outcome of such work.

  4. Check the passenger footwell for water

    Lift the floor mat and feel the carpet. Blocked cowl drains and failed windshield seals let water run down behind the glovebox where the airbag harness passes, and the leak has to be fixed first.

    Tools: Flashlight

  5. Leave the loop test to a technician

    Never probe the airbag connector or put a test light across it; the passenger airbag is large and deploys with great force toward the seat. The shop disconnects the battery, waits the specified time and uses an airbag simulator to tell the airbag from the harness.

  6. Repair and confirm

    After the faulty part is replaced or the connector repaired, the code is cleared with nobody in the car during battery reconnection. The SRS light must go out, and the OFF lamp must react correctly to an adult sitting in the seat.

    Tools: OBD-II scanner

Repair options & costs

RepairDIY?Estimated cost
SRS diagnosis No $100–$200
Reseat or repair passenger airbag connector No $100–$300
Fix water leak and repair corroded SRS harness No $200–$600
Replace passenger airbag No $700–$1,800
Replace airbag control module No $500–$1,300

Rough US estimates for parts and labor; shop rates vary by region. Not a quote.

Emissions / smog test impact

Depends

A US emissions test isn't affected. In states with a vehicle safety inspection, an illuminated airbag light can mean a fail.

Frequently asked questions

Is B0010 the same as the PASSENGER AIRBAG OFF light?

No. The OFF light is a status indicator from the occupant sensing system and is normal with an empty seat or child seat. B0010 is an electrical fault in the airbag's firing loop and turns on the main SRS warning light.

Can my passenger ride in front?

It's safer not to until the fault is fixed, because the passenger airbag is probably disabled. If someone must ride in front, keep the seat far back and make sure they wear the belt properly.

Could a recall repair have caused B0010?

It can happen. Replacing the passenger airbag means disconnecting its plug, and if the connector or its locking tab isn't fully engaged afterwards, the module flags the loop. The dealer that did the work should check it.

Why does water matter for an airbag code?

The passenger airbag harness runs behind the glovebox, right where water from a leaking cowl or windshield tends to collect. Corroded pins change the loop resistance enough for the module to set B0010.

Sources