2003 jeep grand cherokee check engine light P1499 P1685

Asked by Jun 03, 2017 at 11:27 PM about the 2003 Jeep Grand Cherokee Laredo 4WD

Question type: General

I have these codes too

3 Answers

610

P1499 is referring to hydraulic fan control solenoid. It's for your cooling fan. All you need to do is replace the hydraulic fan solenoid. P1685 is referring to the anti theft system (SKIM) at some point it seen an invalid key code. I would do a hard reset. Take both battery terminals off and touch together for about 30 seconds and then reattach. Should reset code 1685.

77,905

You never want to touch the battery cables together, you would be creating a direct short in the electrical system. Any residual voltage built up could blow the computer or other electrical components. P1499 JEEP - Hydraulic Cooling Fan Solenoid Circuit Condition...Possible causes: Faulty Hydraulic Cooling Fan Hydraulic, Cooling Fan harness is open or shorted, Hydraulic Cooling Fan poor electrical connection......P1685 JEEP - Invalid SKIM Key...Possible causes: Reprogram Smart Key Immobilizer Module (SKIM) key, Faulty Immobilizer Key, Faulty Immobilizer Module...The P1685 code means that there is something wrong with either your ignition key or your Immobilizer Module.

610

Or three back to back key cycles with multiple keys. Its a Chrysler product. I have fixed numerous Chrysler products with a hard reset to computer. Doing a hard reset on this 2003 jeep may clear up both issues that it is experiencing. Touching terminals together on a Chrysler made product kills residual voltage. That is the main problem with Chrysler computers and there integrated systems they still continue to use today. I should have reworded what I said because any time a part such as the the cooling. Always check fuses and relays. If a Chrysler will not crank. The first thing I check is the ads relay. If that relay doesn't power up. You have a shit computer.

Your Answer

Grand Cherokee

Looking for a Used Grand Cherokee in your area?

CarGurus has 67,889 nationwide Grand Cherokee listings starting at $950.

ZIP:

Jeep Grand Cherokee Experts

  • #1
    inuevafreak
    Reputation
    2,150
  • #2
    Tom Demyan
    Reputation
    2,010
  • #3
    thejeepdoctor
    Reputation
    2,000
View All

Related Models For Sale

Used Dodge Durango
340 Great Deals out of 23,784 listings starting at $1,495
Used Ford Explorer
1,198 Great Deals out of 64,657 listings starting at $1,499
Used Toyota 4Runner
315 Great Deals out of 27,463 listings starting at $1,900
Used Jeep Wrangler
463 Great Deals out of 20,044 listings starting at $3,000
Used Chevrolet Tahoe
905 Great Deals out of 39,854 listings starting at $1,990
Used Ford F-150
3,338 Great Deals out of 225,658 listings starting at $1,250
Used Chevrolet Silverado 1500
3,004 Great Deals out of 162,980 listings starting at $1,500
Used BMW X5
329 Great Deals out of 15,297 listings starting at $1,995
Used Honda Accord
909 Great Deals out of 78,522 listings starting at $1,295
Used Chevrolet Camaro
534 Great Deals out of 31,193 listings starting at $1,450

Used Cars For Sale

2018 Jeep Grand Cherokee Laredo 4WD For Sale
5,290 listings starting at $24,192
2017 Jeep Grand Cherokee Laredo 4WD For Sale
17 Great Deals out of 761 listings starting at $21,973
2016 Jeep Grand Cherokee Laredo 4WD For Sale
17 Great Deals out of 512 listings starting at $18,500
2015 Jeep Grand Cherokee Laredo 4WD For Sale
38 Great Deals out of 1,206 listings starting at $16,750
2014 Jeep Grand Cherokee Laredo 4WD For Sale
23 Great Deals out of 665 listings starting at $12,995

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.