Question about 2001 Toyota 4Runner
Codes p0505 and p0442
Posted by Anonymous on
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Posted on Jan 02, 2017
P0505 Idle Control System Malfunction
IACV or Idle Air Control Valve if equipped is malfunctioning.
P0420 Catalyst System Efficiency Below Threshold (Bank #1)
The Catalytic converter is not working up to par in Bank#1.
I think this will point you in the right direction..
Posted on Jul 16, 2010
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