What does code P1138 mean on Audi vehicles?
A lean mixture condition has been detected on Bank 2 based on additive fuel trim.
OBD-II Code Audi
P1138 — Audi — Long Term Fuel Trim Additive Fuel Bank 2 System Too Lean
A lean mixture condition has been detected on Bank 2 based on additive fuel trim.
Common symptoms
- Loss of engine power.
Possible causes
- Intake air leak.
Initial recommendation
Check for intake air leaks.
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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