U3565Hydrogen Supply Line A Pressure Sensor 2 Circuit
- Generic OBD-II code · Network
- Turns on the check-engine light
- Can trigger limp mode
- How the car detects it
- U3565 signals that the second pressure sensor of hydrogen supply line A has a wiring problem. Two sensors on one line let the controller cross-check them, and Hyundai's Nexo shows how such a pair is handled in service: when hydrogen pressure sensor 1 or 2 (P315200, P315300) set codes, campaign T4E from 2019 had both swapped for a revised part at an outdoor venting spot, followed by an offset reset and a leak test; the thin metal membrane of the sensors must touch nothing. A later Hyundai update (20-01-029H) reworked the MIL logic in the Nexo's fuel cell controller and names the sensor 1 code P315292 in that context. No maker documents U3565. A warning is likely; relying on sensor 1 alone, the system may keep running, perhaps with less power. Sensor 1 on this line is U3564.
- What you may notice
- Fuel cell system warning, MIL on
- Often no noticeable change while sensor 1 still works
- Reduced power
- Likely causes
- LikelyOpen, short or corrosion in wiring or connector of pressure sensor 2
- PossiblePressure sensor 2 faulty internally
- RareSensor membrane damaged during a previous repair
- RareFuel cell control unit faulty or needing a software update
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €200 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.