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Home / DTC / B1468 — Front ABG safing G sensor short

B1468 — Front ABG safing G sensor short

Detailed page for trouble code B1468.

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B1468

MITSUBISHI B — Body

Front ABG safing G sensor short

Brand: MITSUBISHI
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Damaged safing G sensor (internal short)
  • Wiring shorted to ground or battery voltage (chafed or pinched harness)
  • Corroded/loose connector or bent pins
  • Water intrusion or contamination in connector
  • Faulty SRS (airbag) control module or connector
  • Recent collision damage or repair with improperly routed/secured wiring

Symptoms

  • SRS / airbag warning lamp illuminated on instrument cluster
  • Diagnostic trouble code B1468 stored (may be accompanied by other SRS codes)
  • Possible disablement of front airbag deployment logic until fault is cleared
  • Intermittent SRS lamp if wiring contacts are intermittent
  • Failed safety inspection due to airbag warning light

What to check

  • Read and record stored SRS codes with a compatible scanner (note freeze frame/related codes)
  • Visually inspect sensor, harness and connectors for damage, corrosion, moisture, or repair work
  • Inspect routing where harness passes through body/steering/suspension for chafe or pinched areas
  • Backprobe sensor connector and measure reference, ground and signal voltages with ignition ON (follow SRS safety steps)
  • Perform wiggle test on harness while monitoring live data/voltage to reproduce fault
  • Check continuity and resistance between sensor pins and SRS control module pins with ignition OFF and battery disconnected

Signal parameters

  • Typical safing G-sensor supply: approx. 5 V reference (varies by model)
  • Typical sensor output at 0 G: approx. 2.5 V (centered) — short to ground if ≲0.5 V, short to battery if ≳4.5 V (values approximate; confirm with factory data)
  • Expected continuity: sensor signal to module should show open-circuit to other vehicle circuits; short to ground/power indicates fault
  • Resistance: open = very high (kΩ–MΩ) between signal and ground; short = very low (Ω)

Diagnostic algorithm

  1. Read and record all SRS codes and freeze-frame data with a compatible scanner. Note any related codes.
  2. Follow vehicle manufacturer SRS safety procedure: disable battery negative, wait specified time (typically several minutes) before servicing SRS components.
  3. Visually inspect the front safing G-sensor and connector for damage, corrosion, moisture, or evidence of impact. Inspect entire harness routing for chafing or pinching.
  4. Reconnect battery per safety procedure and backprobe the sensor connector with scanner/ DMM connected to live data. With ignition ON (engine OFF), verify reference voltage (≈5 V), ground continuity, and signal voltage (≈2.5 V at rest).
  5. If signal is stuck near 0 V or battery voltage, isolate by disconnecting sensor and re-measuring at harness connector. If the abnormal voltage remains at the harness, suspect wiring short or module. If correct at harness but abnormal at sensor, replace sensor.
  6. With battery disconnected, perform continuity/resistance checks between sensor wires and chassis ground/battery (+) to find shorts. Check continuity between sensor signal and other power circuits.
  7. Repair wiring faults (replace sections, repair connector, seal against moisture). Replace sensor if internal short or if diagnostics point to sensor failure.
  8. If wiring and sensor are good, consider SRS control module or connector fault; consult factory service information and perform module-level tests or replacement as directed.
  9. After repairs, clear codes and perform full SRS system check; verify no new codes and that SRS lamp remains off.
  10. Safety note: Always follow manufacturer SRS disconnect/reconnect intervals and handling procedures. Work on SRS systems only with proper training and tools.

Likely causes

  • Chafed harness where it passes through a body panel or near steering/suspension components
  • Connector pins pushed out, bent, or corroded allowing short between terminals
  • Sensor damaged by impact or moisture
  • Short between sensor signal and vehicle power/ground from damaged insulation

Fault status

⚠️ Status
Stored B1468 — Front ABG safing G sensor circuit short. SRS warning lamp illuminated; airbag deployment logic may be inhibited until the fault is corrected.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B1467 B1469 B1460 B1480 B1500
406

Browse 406 MITSUBISHI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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