Engine code p1509

Asked by Mar 06, 2017 at 01:22 AM about the 2000 Ford Expedition

Question type: Maintenance & Repair

Check engine

1 Answer


P1509 - Idle Air Control Valve System High RPM...Possible causes; Faulty Idle Air Control Valve, Idle Air Control Valve harness is open or shorted, Idle Air Control Valve circuit poor electrical connection...The target idle speed is in the Engine Control Module (ECM) memory for various engine conditions (coolant temperature, A/C operation and so on). The ECM keeps the actual idle speed at the target idle speed by switching the Idle Air Control Valve IACV) ON/OFF to control the intake airflow. If the IACV output duty cycle (the length of ON time) is out of a specified range, a malfunction is detected and a DTC is stored.

Your Answer

Ford Expedition Experts

  • #1
  • #2
    Larry Sturgis
  • #3
View All

Related Models For Sale

Used Chevrolet Tahoe
660 Great Deals out of 38,085 listings starting at $995
Used Ford Explorer
891 Great Deals out of 64,257 listings starting at $1,995
Used Chevrolet Suburban
429 Great Deals out of 22,459 listings starting at $2,495
Used Lincoln Navigator
89 Great Deals out of 3,464 listings starting at $2,900
Used Ford F-150
2,602 Great Deals out of 221,772 listings starting at $1,222
Used GMC Yukon
401 Great Deals out of 18,688 listings starting at $1,800
Used GMC Yukon XL
234 Great Deals out of 12,732 listings starting at $2,395
Used Cadillac Escalade
262 Great Deals out of 11,941 listings starting at $2,995
Used Dodge Durango
233 Great Deals out of 24,346 listings starting at $1,500
Used Toyota Sequoia
89 Great Deals out of 4,890 listings starting at $3,495
Used Ford Excursion
7 Great Deals out of 787 listings starting at $4,395
Used Ford F-250 Super Duty
413 Great Deals out of 45,526 listings starting at $1,500

Used Cars For Sale

2018 Ford Expedition For Sale
6,718 listings starting at $43,676
2017 Ford Expedition For Sale
182 Great Deals out of 4,983 listings starting at $22,400
2016 Ford Expedition For Sale
63 Great Deals out of 1,321 listings starting at $18,991
2015 Ford Expedition For Sale
35 Great Deals out of 905 listings starting at $18,500
2014 Ford Expedition For Sale
39 Great Deals out of 900 listings starting at $12,990

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.