P0155

DTC P0155 / O2 SENSOR HEATER CIRCUIT MALFUNCTION (BANK 2 SENSOR 1)

Hyundai does not provide a trouble code diagnostic procedure.
Refer to the component, Oxygen Sensor.
Oxygen Sensor

- Open or short between sensor and ECM.
- Bad connection of connectors / bad wiring.
- Malfunction of sensor (B2/S1).