Pilot 2004 engine check lot and vtm light on dash error code p1491 reset still comes back car runs fine?


Asked by Aug 08, 2016 at 08:43 PM about the 2004 Honda Pilot

Question type: General

EGr issue not gas cap prob new one error p1491 don,t know what to do next
reset several times

3 Answers


Normal lift sensor voltage on a closed EGR valve is 1.1 or 1.2 volts. Watch the voltage on the scan tool or back probe the White/Black (WHT/BLK) wire. Remove the Pink (PNK) wire out of the connector at the EGR valve and apply battery voltage to that terminal to operate the EGR valve manually, the EGR valve should open and the lift sensor voltage should increase from 1.1 volts to around 4.0 volts. Always verify that the voltage does not drop out when the valve is operated, or the code will also set. The EGR valve is a common failure. Also if the EGR passages are restricted, it can set this code.

1 people found this helpful.
Best Answer Mark helpful

Will try this. Thank you

1 people found this helpful.

Replaced Egr valve all is good .couldnt get pins out of plug to check. Thanks for the help

1 people found this helpful.

Your Answer


Looking for a Used Pilot in your area?

CarGurus has 647 nationwide Pilot listings starting at $3,495.

Postal Code:

Honda Pilot Experts

  • #1
  • #2
  • #3
    Patrick Jay R
View All

Related Models For Sale

Used Toyota Highlander
11 Great Deals out of 1,107 listings starting at $3,995
Used Honda CR-V
43 Great Deals out of 3,196 listings starting at $1,550
Used Acura MDX
17 Great Deals out of 413 listings starting at $2,500
Used Toyota 4Runner
515 listings starting at $4,995
Used Honda Odyssey
21 Great Deals out of 939 listings starting at $2,500
Used Nissan Pathfinder
16 Great Deals out of 1,344 listings starting at $3,888
Used Ford Explorer
38 Great Deals out of 1,631 listings starting at $2,900
Used Honda Accord
58 Great Deals out of 1,429 listings starting at $2,444
Used Chevrolet Tahoe
7 Great Deals out of 870 listings starting at $8,979
Used Toyota Sienna
23 Great Deals out of 777 listings starting at $2,495
Used Toyota RAV4
39 Great Deals out of 3,520 listings starting at $2,653
Used Jeep Grand Cherokee
148 Great Deals out of 4,491 listings starting at $1,800
Used Kia Sorento
144 Great Deals out of 2,494 listings starting at $4,800

Used Cars For Sale

2018 Honda Pilot For Sale
294 listings starting at $40,590
2017 Honda Pilot For Sale
25 listings starting at $34,888
2016 Honda Pilot For Sale
65 listings starting at $32,900
2015 Honda Pilot For Sale
49 listings starting at $23,588
2014 Honda Pilot For Sale
40 listings starting at $18,999

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.