B1129 Right side airbag module circuit fault (Nissan and Infiniti)

RH side air bag module circuit malfunction

B1129 in short

On Nissan and Infiniti, B1129 means the airbag computer found a fault in the right side airbag module circuit, such as an open or short. An Infiniti G35 bulletin covers it with B1134. That side airbag may not deploy, so have a dealer check it soon.

B1129 is the right-side counterpart of B1134. The tat.net.au listing describes it as a right side air bag module circuit malfunction: an open, a short to ground or battery, or resistance out of range.

Infiniti bulletin ITB-12-034 covers the 2003-2005 G35 sedan and coupe with side module opening codes B1129 or B1134. I could not read the repair itself, only the summary.

Nissan warns that airbags and pretensioners can still deploy with the ignition off, so this is dealer work.

Pick your make

B1129 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

These are general causes for this code across vehicles. None is specific to one make or model.

  1. Side airbag connector not fully attached or poorly connected

    Possible — needs testing
    Why it ranks here
    Nissan names a loose side airbag connector for the left side code B1134; B1129 is the right-side twin and the Infiniti bulletin covers both, but no page I read states this cause for B1129 specifically.
    What would change this
    Rises if a technician finds the connector loose. Falls if it is tight.

  2. Damaged seat harness or side airbag module

    Possible — needs testing
    Why it ranks here
    The tat.net.au preview lists open, short and out-of-range circuit faults, which a damaged harness or module could cause.
    What would change this
    Rises if the connector is seated and the circuit is still faulty.

What to test first

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

  1. Have a Nissan or Infiniti dealer read the SRS codes and check the right side airbag connector and harness with the service manual procedure.

    Best left to a shopTool: Nissan CONSULT 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. Leave this to a dealer or trained technician.

Symptoms

  • Airbag (SRS) light on

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

  • Passenger seat side airbag connector and harness:Under or inside the passenger seat. Dealer work only. 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

Infiniti

  • 2003–2005 · G35

    Supported by vehicle data

    Infiniti bulletin ITB-12-034 covers B1129 and B1134 side module open codes on the G35 sedan and coupe.

  • ITB-12-034Status unverified

    Side module open, B1129 or B1134

    2003–2005g35 · NHTSA 10044443

    Updated repair procedures for side module open codes on the 2003-2005 G35 sedan and coupe.

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

  • B1134Front left side airbag module circuit open (Nissan and Infiniti)

    Same system Supported by vehicle data

    Infiniti bulletin ITB-12-034 covers B1129 (right) and B1134 (left) side module open codes together.

All Airbags and seat-belt restraints (SRS) codes

B1129 questions

Is it safe to drive with B1129?

The car drives normally, but the right side airbag may not deploy. Have a dealer check it soon.

Sources and review

  1. 2023 Accord Owner's Manual: Airbag System Indicators — American Honda Motor Co.
  2. Camry Owner's Manual (OM06291U) — Toyota
  3. Nissan Supplemental Restraint Systems: damage analysis and repair using Diagnostic Trouble Codes (TechNews, Summer 2016) — Nissan North America ,
  4. Infiniti ITB-12-034 side module opening, B1129 or B1134 — NHTSA (manufacturer communication)
  5. Nissan NTB-09-064 B1134 side module LH (open) — NHTSA (manufacturer communication)
  6. B1129 fault code view (Nissan, RH side air bag module circuit malfunction) — The Automotive Technician (tat.net.au)
Last reviewed
Written by
Saurabh K.
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