What does code P1309 mean on Hyundai vehicles?
The rough road sensor signal voltage is higher than expected, indicating a possible electrical fault.
OBD-II Code Hyundai
P1309 — Hyundai — Rough Road Sensor Voltage High
The rough road sensor signal voltage is higher than expected, indicating a possible electrical fault.
Common symptoms
- Stability system warnings
- incorrect traction control behavior
Possible causes
- Short to voltage
- damaged wiring
- faulty sensor
Initial recommendation
Check wiring for shorts, inspect connector condition, replace sensor if fault persists.
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 Hyundai code P1309 with your vehicle's actual symptoms for more complete diagnostic guidance.
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