What does code P1139 mean on Volkswagen vehicles?
The additional long-term fuel trim for bank 2 indicates a rich mixture condition.
OBD-II Code Volkswagen
P1139 — Volkswagen — Long Term Fuel Trim Additional Fuel Bank 2 System Too Rich
The additional long-term fuel trim for bank 2 indicates a rich mixture condition.
Common symptoms
- High fuel consumption
- reduced efficiency
Possible causes
- Faulty fuel injectors
- fuel delivery issues
Initial recommendation
Inspect injectors and perform fuel system diagnostics.
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 P1139 with your vehicle's actual symptoms for more complete diagnostic guidance.
Go to the app View more brands