What does code P1505 mean on Volkswagen vehicles?
The ECU detects that the throttle plate does not close properly or there is an open circuit in the closed throttle position circuit.
OBD-II Code Volkswagen
P1505 — Volkswagen — Closed Throttle Position Does Not Close / Open Circuit
The ECU detects that the throttle plate does not close properly or there is an open circuit in the closed throttle position circuit.
Common symptoms
- Unstable idle
- irregular engine speed
Possible causes
- Dirty throttle body
- faulty throttle actuator
- open circuit wiring
Initial recommendation
Clean throttle body and perform throttle adaptation; inspect wiring and connectors.
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 P1505 with your vehicle's actual symptoms for more complete diagnostic guidance.
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