B00A2

Code

Generic B — Body

Passenger Airbag Squib Circuit Malfunction

Brand: Generic

Type: B — Body

Views: UK: 11 EN: 53 RU: 14

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Open circuit in passenger airbag squib wiring
Short to ground or short to battery in squib circuit
High resistance in connector pins or wiring (corrosion, corrosion intrusion, damaged insulation)
Faulty passenger airbag (squib) module or internal squib short
Poor or loose connector mating at passenger airbag or SRS control module
Improper previous repairs or aftermarket equipment damaging wires

Symptoms

SRS/airbag warning lamp illuminated on instrument cluster
Passenger airbag status message may show disabled or fault
Possible disablement of passenger airbag deployment
Stored SRS fault codes and possible reduced system functionality
Some vehicles may log additional related codes (seatbelt pretensioner, occupancy sensor)

What to check

Read SRS module using an appropriate scan tool; record freeze frame and all stored codes
Check for Technical Service Bulletins or recalls related to passenger airbag or wiring
Visually inspect passenger airbag connector, harness routing, and nearby components for damage, corrosion, or water intrusion
Inspect under-seat area and seat track area for pinched or chafed wires
Check connector pin retention and condition; ensure full seating of connectors
Verify battery voltage and grounds are good before electrical tests

Signal parameters

Squib circuit resistance (cold, measured at module or squib connectors): typical low-value range ~1–5 Ω for many passenger airbag squibs (consult OEM spec)
Open-circuit: very high/infinite resistance indicates broken wire or disconnected connector
Shorted circuit: very low resistance (
Voltage on squib firing lines: typically not to be energized for testing; any unexpected steady battery voltage on squib line with ignition ON may indicate short or stuck driver in circuit — consult OEM data
Module input/output status from scan tool: circuit status, activation attempts, and current/voltage supply readings where supported by the tool

Diagnostic algorithm

Connect a capable SRS scan tool and read all airbag system codes and freeze-frame data (document results).
Check for manufacturer TSBs and recall actions for airbag components before proceeding.
Follow vehicle-specific SRS disable procedure (disconnect battery, wait specified time) to prevent accidental deployment.
Perform visual inspection of passenger airbag connector, harness, and routing. Pay attention to areas prone to chafing: seat tracks, carpet plugs, dash seams, and HVAC grommets.
With SRS disabled and per OEM guidance, disconnect the passenger airbag connector and inspect pins for corrosion, bent pins, or pushed-back insulation. Repair or replace connector as required.
Measure squib circuit resistance using a digital multimeter across squib terminals (or module side per service manual). Compare measured value to OEM specification. Replace squib or repair wiring if out of spec.
Check for continuity to ground and short to battery on the squib circuit using appropriate methods described in the service manual; repair any short or open found.
If wiring and connectors are good, verify SRS control module connector pins and grounds. Repair any damaged pins or poor ground points.
After repairs, clear codes with scan tool, perform system checks and readiness tests, and confirm lamp extinguishes and no codes return. If codes return, follow module-level diagnostics: consider module reprogramming or replacement only per OEM procedures.
Always replace airbag/squib components with OEM-approved parts and follow strict safety and disposal procedures for pyrotechnic devices.

Likely causes

Broken/abraded wire in harness under passenger seat or dash
Corroded or pushed-back terminal in passenger airbag connector
Short to ground caused by pinched wire near seat tracks or HVAC/firewall grommet
Damaged passenger airbag module/squib due to impact or water ingress
Faulty SRS control module or incorrect module programming

Fault status

⚠️ Status

Passenger airbag squib circuit malfunction detected (B00A2). SRS warning lamp on; passenger airbag may be disabled. Electrical fault (open, high resistance or short) in passenger squib circuit.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-3.0 hours