P0506 is rated as medium severity. Schedule service — affects performance or emissions.

P0506

Idle Air Control System RPM Lower Than Expected

Q: What does code P0506 mean?

Idle Air Control System RPM Lower Than Expected: Idle speed is lower than the ECM expects. Could indicate a dirty throttle body, vacuum leak, or faulty IAC valve.

Powertrain Code · Medium

What does P0506 mean?

Idle speed is lower than the ECM expects. Could indicate a dirty throttle body, vacuum leak, or faulty IAC valve.

System: Idle Control

P0506 is a powertrain diagnostic trouble code indicating idle air control system rpm lower than expected. This code is classified as medium severity, which means: schedule service — affects performance or emissions.

Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your vehicle.