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Guest Message by DevFuse
 

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P1507 trouble code


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7 replies to this topic

#1 mdjdc

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Posted 02 June 2009 - 07:53 PM

My 99 OBW died yesterday and ran like it had jumped timing. Today i tried to start it to put in the shed so I could check and replace the TB. It ran like a champ, but the check engine light was on. I went to advance auto and the code pulled a P1507. I looked it up and it came back as an Idle control malfunction (fail safe). The tech cleared the code and it has been running fine, but I would like to know what happened yesterday so I can prevent it from happening again. Where do I go from here? Do I just wait and see if it happens again.

One thing I did was to clean and re-oil my K/N air filter on Saturday. Could that have caused a problem. I used very little oil and only on the airbox side.

Thanks Guys

#2 OB99W

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Posted 02 June 2009 - 10:28 PM

One thing I did was to clean and re-oil my K/N air filter on Saturday. Could that have caused a problem. I used very little oil and only on the airbox side.

Check for intake air leaks, and also see this: http://endwrench.com...gTroubSum04.pdf .

#3 mdjdc

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Posted 03 June 2009 - 05:22 AM

Thank you for that info. I will check the switch tomorrow. It is funny, since I just put this tranny in this past Saturday. I might just replace the switch with the one in my old tranny to be safe.

#4 OB99W

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Posted 03 June 2009 - 09:11 AM

You're welcome. It does seem like the neutral switch itself (or its operation/connection) is the likely cause of the code in your case -- the ECU thinks the car is in neutral when it isn't, and acts accordingly. When the ECU triggers the P1507 code, it also puts the system into a ''limping'' mode, and that's probably the poor-running condition you experienced.

Edited by OB99W, 03 June 2009 - 10:02 AM.
Corrected grammar!


#5 mdjdc

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Posted 03 June 2009 - 09:35 AM

Thanks Again.

I'm glad it is going to be a simple fix. I have a friend who wants to buy her from me and I am going to move into a 99 Forester manual with 144K on it.

#6 Powerfun

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Posted 01 March 2011 - 04:13 PM

Thank you for that info. I will check the switch tomorrow. It is funny, since I just put this tranny in this past Saturday. I might just replace the switch with the one in my old tranny to be safe.


What switch on the tranny caused this? The link no longer works. I have the same problem and just replaced the tranny, it a manual.

#7 mdjdc

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Posted 01 March 2011 - 07:11 PM

Once I replaced the switch the code went away. It was a real easy fix.

#8 bstone

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Posted 01 March 2011 - 08:24 PM

I had this code and went crazy with it for weeks.

I replaced the TPS, IACV, checked over and over vacuum leaks, replaced the neutral safety switch. In the end I brought it to the local independent subaru specialist who replaced the throttle body and adjusted the TPS which took care of it.




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