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Home / DTC / C1671 — Front Initiator Data Open / Short to GND

C1671 — Front Initiator Data Open / Short to GND

Detailed page for trouble code C1671.

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Code

C1671

HYUNDAI C — Chassis

Front Initiator Data Open / Short to GND

Brand: HYUNDAI
Type: C — Chassis
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open circuit in front initiator (squib) wiring
  • Short to ground in front initiator wiring
  • Poor or corroded connector at squib or SRS module
  • Damaged airbag inflator (deployed or internally failed)
  • Faulty SRS (airbag) control module
  • Faulty clock spring (driver side) or damaged harness through steering column

Symptoms

  • SRS / Airbag warning light illuminated on dash
  • Airbag system disabled for the affected front seat
  • Possible stored additional SRS fault codes
  • No deployment capability for the affected front airbag (until repaired)
  • Possible intermittent SRS light if connection is marginal

What to check

  • Use a capable scan tool to read and record all SRS codes and freeze frame data.
  • Confirm C1671 is current (not history) and attempt to clear then re-scan to see if it returns.
  • Visually inspect connectors and wiring for the front airbag(s), steering column, and under-dash harness for damage or corrosion.
  • Check for aftermarket devices or previous repairs that may have disturbed wiring routing.
  • Verify airbag module part numbers and previous deployment history (vehicle history).
  • Do not probe airbag connector pins with battery connected without following safety procedures.

Signal parameters

  • Front squib (initiator) resistance: typically a low resistance value (manufacturer spec — commonly ~1–5 Ω).
  • Open-circuit condition: measured resistance is very high/infinite when compared to spec.
  • Short-to-ground condition: continuity between squib positive/negative lead and chassis ground where there should be none.
  • Reference service manual for exact resistance and test voltages for this vehicle/airbag type.

Diagnostic algorithm

  1. Safety first: follow manufacturer's SRS safety procedure. Disable SRS by disconnecting battery negative terminal and wait the specified time (refer to service manual) before touching connectors or components.
  2. Connect an OEM-capable scan tool. Read and record all SRS codes, module data, and freeze frame. Note which front initiator (driver or passenger) is reported.
  3. Visually inspect the suspected squib harness, connectors, and grounds for damage, corrosion, loose pins, or signs of heat or previous deployment.
  4. With battery still disconnected and after waiting the required time, measure resistance of the front squib at the airbag connector and at the control module connector using an ohmmeter. Compare to factory spec. (If measured at module connector, ensure no intermediate connections are open.)
  5. Check continuity from each squib lead to chassis ground. There should be no continuity; continuity indicates a short to ground.
  6. If resistance is out of spec or short/open is confirmed, isolate by disconnecting connectors section-by-section to find the damaged segment (steering column/clock spring for driver side, harness under dash or front of vehicle for passenger side).
  7. Inspect and test clock spring if driver squib is involved. Replace clock spring per manufacturer instructions if it shows open/short or physical damage.
  8. Repair wiring or connectors as required (replace harness sections, repair pins, clean or replace connectors). Use correct crimps/terminals and protect with grommets/loom where necessary.
  9. If squib resistance is incorrect and wiring is good, replace the affected airbag module (do not attempt to repair squib/inflator).
  10. After repairs, reconnect battery, clear codes with scan tool, and run SRS system self-tests. Confirm C1671 does not return and that SRS lamp extinguishes and system reports normal.
  11. If code persists after wiring and component checks, consider testing or replacing the SRS control module per factory diagnostic flow and calibrations.

Likely causes

  • Chafed/abraded wiring contacting chassis (short to ground)
  • Disconnected or loose connector at the front airbag or module
  • Corroded terminals inside the connector allowing intermittent open
  • Severed wire from previous repairs or service
  • Failed squib due to aging or moisture ingress
  • Clock spring failure causing open/short (driver airbag)

Fault status

⚠️ Status
Front initiator (airbag squib) circuit open or short to ground detected — SRS system has disabled the affected front squib and set DTC C1671.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

C1650 C1651 C1670 C1680 C1700
371

Browse 371 HYUNDAI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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