Tundra Solutions Forum - View Single Post - 2000 echo check engine light

Quote:

Originally Posted by Proost

Mustang - read the code today (thanks Autozone): P0505 on my 2002 5-speed Echo. Idle control system. Any thoughts on the best way to troubleshoot? I can push this off and build another thread in the right place if that's appropriate.

Start with this PDF
It sounds like the IAC Motor or an ECU

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