What does code P1168 mean on Hyundai vehicles?
The ECU detects a malfunction in the heater control circuit of the downstream oxygen sensor on Bank 1.
OBD-II Code Hyundai
P1168 — Hyundai — Heated Oxygen Sensor (HO2S) 2 Bank 1 Heater Control Circuit Malfunction
The ECU detects a malfunction in the heater control circuit of the downstream oxygen sensor on Bank 1.
Common symptoms
- Check engine light illuminated
Possible causes
- Faulty heater circuit
- damaged wiring
Initial recommendation
Inspect heater circuit wiring and replace oxygen sensor if heater failure is confirmed.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
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