What does code P1390 mean on Isuzu vehicles?
The ECU detects intermittently low voltage in the G-sensor circuit used for stability control.
OBD-II Code Isuzu
P1390 — Isuzu — G Sensor Circuit Intermittent Voltage Low
The ECU detects intermittently low voltage in the G-sensor circuit used for stability control.
Common symptoms
- Erratic stability control operation
Possible causes
- Faulty G-sensor
- wiring intermittently open
Initial recommendation
Inspect G-sensor wiring and signal integrity.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine Isuzu code P1390 with your vehicle's actual symptoms for more complete diagnostic guidance.
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