What does code P1559 mean on Volkswagen vehicles?
The ECU detects a failure during idle speed throttle position adaptation.
OBD-II Code Volkswagen
P1559 — Volkswagen — Idle Speed Control Throttle Position Adaptation Malfunction
The ECU detects a failure during idle speed throttle position adaptation.
Common symptoms
- Unstable idle speed
Possible causes
- Incorrect throttle adaptation
- dirty throttle body
Initial recommendation
Perform throttle body cleaning and idle adaptation procedure.
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 P1559 with your vehicle's actual symptoms for more complete diagnostic guidance.
Go to the app View more brands