What does code P1127 mean on Hyundai vehicles?
The ECU detects a persistently rich air-fuel mixture condition.
OBD-II Code Hyundai
P1127 — Hyundai — Long Term Fuel Trim System Too Rich
The ECU detects a persistently rich air-fuel mixture condition.
Common symptoms
- Check engine light illuminated
Possible causes
- Faulty injector
- fuel pressure regulator malfunction
Initial recommendation
Perform fuel system diagnostics and correct rich mixture condition.
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
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