error code p1507

FORD EXPEDITION
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KALLINSTEVE
  • MEMBER
  • 1 POST
2001 expediton 85000
I got the code today. Auto zone doesnt know what it is.
The paper said Idle Air Control System Underspeed error. What does it mean. Thanks, Steve
Nov 17, 2007 at 3:20 AM
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MERLIN2021
  • ✓Experienced Mechanic
  • 17,250 POSTS
What it means is the RPM's are lower than the PCM wants, IAC valve or circuit should be checked, and or a clogged intake airway? how is your air filter?
Nov 17, 2007 at 3:39 AM
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