P1154 KIA Possible Causes
- Faulty HO2S sensor, bank 2 sensor 1
- Open or short circuit in HO2S bank 2 sensor 1 wiring harness
- Poor electrical connection in HO2S bank 2 sensor 1 circuit
- Rich or lean air/fuel ratio
- Engine mechanical condition
How to Fix P1154 KIA Code?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine light on (or engine service warning light soon)
P1154 KIA Meaning
HO2S 21 Transition Switch Time Fault is the generic description for P1154 Kia code, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have additional information about the P1154 Kia OBDII code.