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Engine light on

Tiny
DANE1962
  • MEMBER
  • 2004 CADILLAC SEVILLE
  • 131,411 MILES
I have had it checked at 2 different service centers. The first told me it was a vaccuum leak in the intake. The second has told me it is the power steering pressure hose leaking and the codes are p0463 and p0507. Would the power steering pressure c
hose cause it to throw these codes?
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Friday, November 25th, 2011 AT 4:56 PM

8 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Are there any driveability issues? P0463 have to do with instrument cluster/fuel level. P0507 has to do with idle speed.
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Friday, November 25th, 2011 AT 6:28 PM
Tiny
DANE1962
  • MEMBER
  • 10 POSTS
It has a rough idle at times. We just had the plugs changed in it and thought that would fix the problem, and they are the ones that told us that it had a vacuum leak.
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Friday, November 25th, 2011 AT 6:57 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Yes, a vacuum leak can effect idle.
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Friday, November 25th, 2011 AT 9:08 PM
Tiny
DANE1962
  • MEMBER
  • 10 POSTS
Yes, I am aware that a vacuum leak can cause it but what I was asking is if the power steering pressure hose can cause it to idle rough and cause the engine light to come on.
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Friday, November 25th, 2011 AT 9:17 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
There may be a power steering pressure sensor, that could cause issues? I can't see much from here. All I can do is make suggestions, the rest is up to you.
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Friday, November 25th, 2011 AT 9:57 PM
Tiny
DANE1962
  • MEMBER
  • 10 POSTS
Thank you for your help
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Friday, November 25th, 2011 AT 10:01 PM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
I feel that the power steering leak will not affect the idle, if it is fitted with a P/steer switch this increase the idle when load is applied to steering at idle as in parking this raises the idle speed to maintain steering feel, I would be investigating vacuum leaks for the issues you have.
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Saturday, November 26th, 2011 AT 1:03 AM
Tiny
DANE1962
  • MEMBER
  • 10 POSTS
Thanks for your help
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Saturday, November 26th, 2011 AT 2:31 PM

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