Code
B1425
MITSUBISHI
B — Body
FR side ABG active circuit open
Views:
UK: 15
EN: 31
RU: 15
AI status
Completed
Completed
100%
Causes
- Open or broken wiring in FR airbag squib circuit
- Disconnected or poorly seated connector at the FR airbag or SRS control unit
- Corroded or contaminated connector pins
- Damaged airbag squib (high resistance or open)
- Improper repair or pinched harness after previous collision repair
- Faulty SRS control unit or internal connector fault
Symptoms
- SRS/Airbag warning lamp illuminated on dash
- Possible passenger airbag disabled or system showing fault
- Related SRS DTC(s) stored in the airbag control unit
- Vehicle fails airbag lamp self-test at key-on
What to check
- Read SRS module fault codes and freeze frame with a compatible scan tool
- Visually inspect FR airbag connector, harness routing, and seat area for damage or loose connectors
- With vehicle power off and SRS system disabled per manufacturer procedure, measure resistance of the FR squib circuit at the airbag connector and at the SRS unit to check continuity
- Check connector pins for corrosion, bent pins, or pushed-out terminals
- Verify proper ground connections for the SRS system
Signal parameters
- FR airbag squib resistance — normal: low ohms (squib present); fault: open/infinite ohms
- SRS control unit status: open circuit detected for FR squib
- Key ON self-test: SRS lamp should extinguish; if B1425 stored, lamp remains on
- Connector continuity between FR airbag and SRS ECU
Diagnostic algorithm
- Safety first — follow manufacturer SRS safety procedures: disconnect battery negative terminal and wait required time for the airbag system capacitors to discharge before touching connectors or measuring squib resistance
- Use an OEM-capable scan tool to confirm B1425 and check for related codes and freeze frame data
- Visually inspect the FR airbag connector (under seat/passenger side), wiring harness and nearby components for damage, corrosion, or loose connectors
- With SRS power disabled per service manual, measure squib circuit resistance at the airbag connector and compare with expected (open = infinite). If open at airbag connector, replace/repair harness or airbag
- If resistance is normal at the airbag connector but open at the SRS unit plug, trace and repair wiring between connector points; check splice joints and harness routing
- Clean and reseat connectors; repair corroded pins or replace connector assemblies as needed
- If wiring and connectors are good but fault remains, test/replace the FR airbag module (squib) only with OEM part and reconnect
- If fault persists after replacing airbag and repairing wiring, suspect SRS control unit internal fault and refer to manufacturer for module testing/replacement
- Clear codes with scan tool and perform final system check; verify SRS lamp stays off and no DTC returns
Likely causes
- Damaged wiring between FR airbag and SRS ECU (chafing, pinched, cut)
- Loose/disconnected connector at the FR seat/passenger airbag or floor harness
- Corroded connector terminals at the squib or SRS module
- Failed squib inside the FR airbag (infinite resistance)
- Connector damage after seat removal or service
Fault status
Status
SRS control unit reports an open (open circuit or high resistance) in the front right airbag activation (squib) circuit; airbag deployment circuit is not continuous.
Repair difficulty: Medium
Diagnostic time: 0.5-2.5 hours
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