P0135

DTC P0135 / O2 SENSOR HEATER CIRCUIT MALFUNCTION (BANK 1 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 (B1/S1).