What does code P1138 mean on Volkswagen vehicles?
The additional long-term fuel trim for bank 2 indicates a lean mixture condition.
OBD-II Code Volkswagen
P1138 — Volkswagen — Long Term Fuel Trim Additional Fuel Bank 2 System Too Lean
The additional long-term fuel trim for bank 2 indicates a lean mixture condition.
Common symptoms
- Loss of power
- hesitation
Possible causes
- Intake air leaks
- airflow measurement errors
Initial recommendation
Check intake system for leaks and verify airflow sensor data.
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 Volkswagen code P1138 with your vehicle's actual symptoms for more complete diagnostic guidance.
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