C1235Brake pressure sensor circuit fault
- Hyundai/Kia code · ABS / stability control
- Lights a warning lamp
- How the car detects it
- The sensor that measures brake-fluid pressure in the master cylinder has an electrical fault. Stability control needs it, so ESC is switched off.
- What you may notice
- ESC warning light
- Likely causes
- PossiblePressure sensor (often inside the hydraulic unit)
- PossibleWiring or connector
- Sources
Backed by at least two independent sources.
From Obdaryn's Hyundai/Kia pack, exactly as the app shows it, with the public sources above. Guidance only; confirm with a workshop.