Quick checklist
Use OBD2 scanner to read code details, check related systems
OBD2 Codes
P0509 – P05XX – Vehicle Speed Control and Idle Control
P05XX – Vehicle Speed Control and Idle Control related diagnostic code
Details
OBD2 diagnostic code P0509 indicates a problem with p05xx – vehicle speed control and idle control. Use an OBD2 scanner to read detailed information and diagnose the specific issue.
Typical causesMultiple possible causes - use scanner for specific diagnosis
SymptomsCheck engine light, possible performance issues
SeverityMedium
DIY checksUse OBD2 scanner to read code details, check related systems
ToolsOBD2 scanner
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FAQ
Common questions
What does P0509 mean?
P0509 is related to p05xx – vehicle speed control and idle control. Use an OBD2 scanner for detailed diagnosis.
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