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P0507 Diagnostic Trouble Code Discussion for November 2005

Idle Speed Higher Than Expected

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Trouble Ticket Help Requests for DTC P0507
Help Request Posted
2003 Nissan Sentra SE-R 2.5L MIL Lamp on, P0507 VIN: 3N1AB51D73
P0507: Idle Speed Control System RPM Higher Than Expected. This vehicle originally had a misfire on startup for about two to three seconds after it had been off for anything over a few hours (more noticeable overnight). We eventually found a slight head gasket leak to the #1cyl. which would cause the miss on startup. ...
November 26, 2005