Possible causes

– Faulty HO2S Sensor Bank 1 Sensor 1
– HO2S Sensor Bank 1 Sensor 1 harness is open or shorted
– HO2S Sensor Bank 1 Sensor 1 electrical circuit poor connection

Tech notes

For 1996 and Up Kia models the P1115 Code is for the Engine Coolant Temperature Sensor Short Circuit- Intermittent High Input

Read more: P1115 Kia

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)