What does code P1561 mean on Volkswagen vehicles?
The ECU detects a difference between commanded and actual fuel quantity adjuster position.
OBD-II Code Volkswagen
P1561 — Volkswagen — Quantity Adjuster Control Difference
The ECU detects a difference between commanded and actual fuel quantity adjuster position.
Common symptoms
- Fuel injection malfunction
Possible causes
- Faulty quantity adjuster
- injection pump issues
Initial recommendation
Perform injection system diagnostics and test quantity adjuster operation.
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 P1561 with your vehicle's actual symptoms for more complete diagnostic guidance.
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