surfdwn Posted December 30, 2005 Share Posted December 30, 2005 My wife's '98 Outback has suddenly decided to thow a code. It is code P0507, saying that the idle control system RPM is higher than expected. It has never done this before. I reset it and the car is running fine right now. What are the ususal suspects for this code? A sensor issue? David Nolen Link to comment Share on other sites More sharing options...
ferret Posted December 30, 2005 Share Posted December 30, 2005 The Subaru diagnostics section 1st asks "were there any other codes?" Since you didn't specify, I'll guess not. Then it states 2 or more driving cycles with the idle at a higher RPM then the ECU specified. Check for: Air leaking into the intake manifold at the throttle body, any loose components, hoses all connected and not cracked. In short any intake leaks. No Faults found there, then: Ensure the throttle cable has enough play allowing the throttle plate to close and the Idle Air Solenoid to do it's job at the ECU request. No fault found there, then: Remove the Idle Air Solenoid and inspect it for any foreign particles which may hold the passages open. No Fault found there, then: Replace the Idle Air Solenoid. Link to comment Share on other sites More sharing options...
surfdwn Posted December 30, 2005 Author Share Posted December 30, 2005 Thanks for the info. There were no other codes and after reset, the problem went away (for the time being). As we all know, it will be back! Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now