✅ Possible Causes of Hyundai P1123 Code
- Leak at the fuel pressure regulator or injectors
- Internal mechanical engine problem
- Faulty oxygen sensor (HO2S)
🔧 How to Diagnose and Repair P1123 Code?
Start by examining the possible causes mentioned above. Perform a thorough visual inspection of the wiring harness and associated connectors. Look for any signs of damage, bent pins, broken, pushed-in, or corroded pins.
⚠️ Common Associated Symptoms
- Engine light illuminated on the dashboard (Check Engine)
- Possible decrease in performance or excessive fuel consumption
📘 Meaning of Hyundai P1123 Code
The P1123 code generally corresponds to a long-term rich air/fuel mixture (Fuel Trim Rich). This is a generic description, and depending on the year and model of your Hyundai vehicle, the manufacturer may use a more specific designation.
Note: Precise information about this code may vary by model. If in doubt, it is recommended to consult the manufacturer’s technical documentation or seek professional assistance.