What does code P1124 mean on Hyundai vehicles?
The ECU detects a lean air-fuel mixture based on long-term fuel trim data.
OBD-II Code Hyundai
P1124 — Hyundai — Long Term Fuel Trim (Additive) Mixture Too Lean
The ECU detects a lean air-fuel mixture based on long-term fuel trim data.
Common symptoms
- Loss of power
- hesitation
Possible causes
- Vacuum leaks
- dirty or faulty MAF sensor
Initial recommendation
Inspect intake system for vacuum leaks and clean or test MAF sensor.
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.
Analyze this code with MecaOBD
Use the app to combine Hyundai code P1124 with your vehicle's actual symptoms for more complete diagnostic guidance.
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