P1504 Intake Air Control circuit malfunction??

Blev

New Member
Aug 17, 2003
1,295
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So. Cal. V-Town
I got that code after my headswap. Do I have to change out the IAC now? I had a code reader and the error it gave me was

Auxiliary inputs
Veh. Spd.
Idle Speed Control

Is this something I have to get a tune to fix or did my IAC go bad during the swap from sitting out for a few days?
 
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