B1B02 Driver airbag squib 1 circuit open (Jeep)

Driver airbag circuit open, often the clockspring

B1B02 in short

On Jeep, B1B02 means the driver airbag squib 1 circuit is open: the airbag computer cannot see the first-stage firing circuit of the driver's airbag. The airbag light comes on and that airbag may not deploy. Jeep has clockspring warranty extensions for Wranglers. Have a dealer check it soon; never probe airbag wiring yourself.

The driver's front airbag has firing circuits, called squibs, that the airbag computer checks every time the Jeep starts. B1B02 means squib 1, the first-stage circuit, is open, so the computer turns on the airbag light.

The circuit passes through the clockspring, a coiled ribbon behind the steering wheel that lets the wheel turn. FCA's bulletins replace the clockspring under warranty extensions: X41 for the 2007 Wrangler and X68 for 2011–2016 Wranglers. Wrangler owners report dealers reading "B1B02 Driver Airbag Squib 1 Circuit Open" and replacing the clockspring.

The code shows up on some Chrysler and Dodge models too, but we did not find enough sources to state its meaning for them, so this page speaks only for Jeep.

Pick your make

B1B02 is a manufacturer-specific code: its meaning depends on who built the car.

Other makes: meaning not verified. Check with a scan tool that reads manufacturer definitions.

Most likely causes

  1. Clockspring open inside the steering column

    Supported by vehicle data
    Why it ranks here
    FCA's X41 and X68 bulletins replace the Wrangler clockspring for airbag light concerns, and Jeep dealer readouts pair B1B02 with a clockspring replacement.
    What would change this
    Rises on a Wrangler covered by X41 or X68. Falls if the open is at the airbag or its connector.

  2. Driver airbag connector or terminal fault

    Possible — needs testing
    Why it ranks here
    GM service information lists loose connections, corrosion and unseated connectors as general causes of open airbag circuits; not a Jeep finding for B1B02.
    What would change this
    Rises if the clockspring tests good. Falls if the open is inside the clockspring.

What to test first

Start at step 1. Each result tells you what it means and where to go next.

  1. Have the airbag codes read with a scan tool that can talk to the airbag module, and note every code stored.

    Low riskTool: scan tool with airbag (SRS) access

    • IfB1B02 is stored

      It meansThe driver airbag first-stage circuit is open.

      Go to step 2

    • IfOther airbag codes are stored as well

      It meansA technician should work through them in the order the service manual gives.

      Go to step 3

  2. Give your VIN to a Jeep dealer and ask whether clockspring warranty extension X41 or X68 covers it.

    Low risk

    • IfCovered

      It meansThe dealer diagnoses and replaces the clockspring under the extension.

      Go to step 3

    • IfNot covered

      It meansThe dealer still diagnoses the circuit.

      Go to step 3

  3. Have a dealer or trained technician run the airbag system diagnosis from the service manual.

    Best left to a shopTool: maker's diagnostic tool

    Warning:Never probe airbag connectors or wiring with a test light or meter, and never unplug them yourself. Nissan warns that airbags and pretensioners can still deploy after the ignition is off, and that test equipment must not be used on airbag circuits unless the service manual calls for it. Leave this to a dealer or trained technician.

Symptoms

  • Airbag warning light stays on after the engine starts

How to fix

This is a safety-critical system, so we explain the code but don't give repair steps. Have it inspected by a qualified technician.

Parts and cost context

  • Clockspring:FCA extended clockspring coverage on some Wranglers (X41, X68), so ask before paying. Dealer work. Labour varies; get a quote.

Labor varies by vehicle and shop; get a quote before you approve a repair.

Compare used part prices on PartPriceGuide

On your vehicle

Jeep

  • 2011–2016 · Wrangler

    Supported by vehicle data

    FCA's X68 warranty extension covers the clockspring. Whether it is still current is not verified.

  • 2007 · Wrangler

    Supported by vehicle data

    FCA's X41 warranty extension covers the clockspring for airbag lamp concerns. Whether it is still current is not verified.

  • 2008–2010 · Wrangler

    Supported by vehicle data

    Owners report dealers reading B1B02 and replacing the clockspring.

  • 08-005-17 REV. AStatus unverified

    Clockspring replacement (X68 warranty extension)

    2011–2016wrangler · issued · NHTSA 10140047

    Diagnose the clockspring/steering angle sensor and replace it if the tests call for it.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • 08-119-15Status unverified

    Clockspring replacement due to airbag warning lamp (X41)

    2007wrangler · issued · NHTSA 10160032

    Replaces the airbag clockspring when the airbag warning lamp is on; 10-year/150,000-mile extension.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • B1801Driver airbag (D squib) circuit open (Toyota)

    Same system Possible — needs testing

    B1801 is Toyota's code for an open driver airbag circuit, also often traced to the spiral cable (clockspring).

All Airbags and seat-belt restraints (SRS) codes

B1B02 questions

Is a B1B02 clockspring repair covered on my Wrangler?

Possibly. FCA's X41 (2007) and X68 (2011–2016) warranty extensions cover the Wrangler clockspring. A Jeep dealer can check your VIN.

Sources and review

  1. 2023 Accord Owner's Manual: Airbag System Indicators — American Honda Motor Co.
  2. Camry Owner's Manual (OM06291U) — Toyota
  3. NHTSA complaint ODI 10504285 (2010 Jeep Wrangler) — NHTSA Office of Defects Investigation
  4. FCA 08-005-17 REV. A: clockspring replacement (X68 warranty extension) — FCA US LLC ,
  5. FCA 08-119-15: clockspring replacement due to airbag warning lamp (X41 10-year/150,000-mile warranty extension) — FCA US LLC ,
  6. DTC B0014, B0021, B0031 or B0038 (2011 Saab 9-4X workshop manual, airbag/SRS) — General Motors / Saab Automobile
  7. NHTSA complaint ODI 11425680 (2013 Jeep Wrangler) — NHTSA Office of Defects Investigation
  8. Nissan Supplemental Restraint Systems: damage analysis and repair using Diagnostic Trouble Codes (TechNews, Summer 2016) — Nissan North America ,
  9. NHTSA complaint ODI 10470667 (2008 Toyota RAV4) — NHTSA Office of Defects Investigation
Last reviewed
Written by
Saurabh K.
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