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

71,305

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

Add photo

Related Questions

Search Ford Expedition Questions

Ford Expedition Experts

#1 T_S_T
T_S_T
Reputation 1,910
#2 Larry Sturgis
Larry Sturgis
Reputation 1,330
#3 lightGear
lightGear
Reputation 1,010
View All

Related Models For Sale

Used Chevrolet Tahoe
494 listings starting at $4,995
Used Ford Explorer
41 Great Deals out of 1,246 listings starting at $2,900
Used Chevrolet Suburban
5 Great Deals out of 353 listings starting at $5,495
Used Lincoln Navigator
97 listings starting at $6,999
Used Ford F-150
304 Great Deals out of 8,874 listings starting at $1,600
Used GMC Yukon
13 Great Deals out of 645 listings starting at $4,500
Used GMC Yukon XL
3 Great Deals out of 417 listings starting at $7,495
Used Cadillac Escalade
3 Great Deals out of 392 listings starting at $4,980
Used Toyota Sequoia
3 Great Deals out of 82 listings starting at $4,900
Used Dodge Durango
66 Great Deals out of 1,116 listings starting at $2,495
Used Ford F-250 Super Duty
16 Great Deals out of 712 listings starting at $4,500

Used Cars For Sale

2017 Ford Expedition For Sale
5 Great Deals out of 195 listings starting at $34,550
2016 Ford Expedition For Sale
4 Great Deals out of 39 listings starting at $30,950
2015 Ford Expedition For Sale
18 listings starting at $42,900
2014 Ford Expedition For Sale
15 listings starting at $35,787

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.