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P1180 — G sensor 2 open or short circuit

Detailed page for trouble code P1180.

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Code

P1180

DAIHATSU P — Powertrain

G sensor 2 open or short circuit

Brand: DAIHATSU
AI status
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Page language: EN

Causes

  • Open circuit in G sensor 2 wiring (broken wire, connector pin out)
  • Short to ground or short to battery voltage in the sensor signal or supply circuit
  • Corroded, loose or contaminated connector at the sensor or ECU
  • Failed G sensor (internal short or internal open)
  • Poor ground or reference supply to the sensor
  • Damage from water ingress, impact, or previous repair

Symptoms

  • Malfunction Indicator Lamp (MIL) / CEL illuminated
  • Stability/traction control warnings or reduced functionality (if system uses G sensor)
  • Reduced or erratic throttle/acceleration response in systems that use G input
  • Logged freeze-frame data showing abnormal or missing G sensor values
  • Intermittent faults that may clear with movement of wiring/harness

What to check

  • Read freeze-frame and all stored codes with a scan tool; record live G sensor data and compare to expected values
  • Check for additional related codes (ECU, ABS, TCS)
  • Visually inspect sensor, connector, and wiring for damage, corrosion, pin push-out, or water ingress
  • Wiggle-test wiring and connector while monitoring live data to reproduce the fault
  • Backprobe the sensor connector and measure supply voltage, signal voltage, and ground continuity with a multimeter
  • Inspect/measure continuity and resistance between sensor ground and vehicle chassis ground

Signal parameters

  • Typical reference supply: ~5.0 V (varies by model)
  • Typical signal idle/0G output: approx. mid-rail (~2.5 V) — should vary smoothly with applied G
  • Expected signal range: ~0.5–4.5 V depending on sensor design
  • Sensor supply resistance: should not be open; infinite ohms indicates open circuit
  • Ground continuity: near 0 ohms to chassis ground

Diagnostic algorithm

  1. Retrieve P1180 and any related codes; note freeze-frame and live G sensor values.
  2. With ignition ON (engine off), inspect connector for corrosion, bent pins, or water. Repair or replace connector if needed.
  3. Backprobe connector: verify reference supply voltage (≈5V) to sensor, verify good ground, and measure signal voltage. If supply or ground missing, trace wiring to ECU.
  4. If supply and ground are correct but signal is open/short, check wiring continuity between sensor and ECU pins for open circuit or short to ground/12V. Repair any damaged wiring.
  5. Wiggle harness while monitoring live data to find intermittent breaks. Secure, repair or replace harness sections as required.
  6. If wiring checks good, substitute a known-good G sensor (if available) and re-test.
  7. After repair or replacement, clear codes, perform a test drive or reproduce conditions to confirm the code does not return.
  8. If fault persists after sensor and wiring verified/replaced, consider ECU-side fault and consult dealer-level diagnostics or wiring repair manuals.

Likely causes

  • Wiring chafed at harness flex point (doors, engine mounts)
  • Connector terminals pushed out or bent from servicing
  • Sensor exposed to water/oil causing internal failure
  • Aftermarket work disturbed the harness or connector pins

Fault status

⚠️ Status
P1180 - G SENSOR 2 OPEN OR SHORT CIRCUIT (DAIHATSU)
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

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