Dtc P0505 Idle Air Control (Iac) Malfunction (Scan Diagnostics) - Briggs & Stratton VANGUARD M490000 Repair Manual

DTC P0505 Idle Air Control (IAC) Malfunction (Scan Diagnostics)

Step
1 1. Select the Dashboard icon in the left sidebar to view
the Dealer tab.
2. Observe the Engine Speed display while idling.
2
NOTE: An Engine Speed display can also be viewed under
the Troubleshooting tab.
3. Is reading 750-950 RPM?
NOTE: Cold engine temperatures and low battery voltages can
cause high engine idle speeds. For example, at -18° F (-28° C),
idle speed can be as high as 1350 RPM, while low battery voltages
at normal engine operating temperatures can cause the engine idle
speed to reach 1200 RPM.
64
Action Yes
IAC circuit OK. Go to DTC P0505 Non-
Scan Diagnostics.
No