how do i reset the check engine light after the fix

5

Asked by Nov 01, 2015 at 12:48 PM about the 2004 Ford F-150 Lariat SuperCrew

Question type: Maintenance & Repair

12 Answers

465

Bi-directional scanner

2 of 2 people found this helpful.
97,125

A scan tool is the easiest way, but you can also reset it by removing all of the ECM and KAM fuses for a few minutes before putting them back in, you will loose any presents you may have made like radio stations etc. The 3rd way is to disconnect a battery cable, and wait a few minutes before putting it back on, but people have had problems with newer vehicles turning on the antithieft systems, so if you opt for this plan make sure you know how to deactivate it before hand. HTH

1 of 1 people found this helpful.
68,725

If the repairs solved the problem the light will go out on it's own. To speed up this process keep your gas tank between 3/4 and 1/4 full. No more and no less. That way the computer can run all the diagnostics. If it's still on after a week of normal driving there's something else going on. HTH. -Jim

1 of 1 people found this helpful.
19,390

If you purchased the part at a national auto parts chain, they have bi-directional scanners. Just ask them to clear all the codes.

1 of 1 people found this helpful.
465

Disconnecting all the electricity to an ECM will never "erase" codes in an OBD-2 system. A lightning bolt might do it, if it's a direct hit, but modern ECMs are designed to not allow any owner or parts house to do it without a bi-directional scanner. The last ECMs that dumped data by disconnecting the battery were the old systems that were pretty much fazed out around 1994-5.

4 of 4 people found this helpful.
97,125

I have to disagree with you there JPV, even my 05 Yukon will reset back to factory settings if all the power is removed and allowed to sit for a few minutes, I have even rechecked with my scanner just to make sure the codes are gone, but a scanner is still the best way to do it.

465

I see. Kinda odd though.... not disbelieving you, but I've been an MVPC/INSTALLER-INSPECTOR in California for many years ... over 47 ... and this as been debated a lot. However, having never seen that happen myself, and not had any close associates say they saw it either. .........., makes me wonder why this might not be able to replicate on any vehicles I worked on in days past. I just finished a '98 Suburban today that the customer repeatedly tried to erase his codes like that. It didn't work for him either, but i'm keeping a slightly open mind on this yet

1 of 1 people found this helpful.
97,125

JPV the biggest mistake they make is not removing the KAM power so the code stays put.

1 of 1 people found this helpful.
70

I have a 2002 f150 my eng. lighte keeps come on what wood it be

7 of 7 people found this helpful.
15

my f150 4.6 check engine light stays on. sometimes it flashes while driving on the highway. I know it's a misfire. I am considering changing the spark plugs. has anyone else had this issue? Did changing the spark plugs work?

1 of 1 people found this helpful.
10

If its flashing, it means its a major misfire. Could be the plugs, but doubtful. Is more than likely a shot ignition coil or a bad injector. Seeing as how we dont have distributors.

1 of 1 people found this helpful.

My 09 f150 was doing the same thing until a few min ago. It needed new pugs. Ichanged the plugs and woohoo!!! No ore skip while accelerating. No more flashing eng light. now, i just need to get the eng light turne off.

Your Answer

Add photo

Related Questions

F-150

Looking for a Used F-150 in your area?

CarGurus has 192,330 nationwide F-150 listings starting at $290.

ZIP:

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 8,530
#2 dandyoun
dandyoun
Reputation 4,420
#3 tennisshoes
tennisshoes
Reputation 2,950
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,935 Great Deals out of 182,334 listings starting at $999
Used GMC Sierra 1500
789 Great Deals out of 67,999 listings starting at $1,700
Used Dodge Ram 1500
399 Great Deals out of 10,887 listings starting at $1,000
Used Ford F-250 Super Duty
330 Great Deals out of 43,932 listings starting at $1,450
Used Toyota Tundra
415 Great Deals out of 34,265 listings starting at $1,950
Used Toyota Tacoma
549 Great Deals out of 42,264 listings starting at $1,995
Used Ford Mustang
680 Great Deals out of 44,480 listings starting at $1,500
Used Nissan Titan
175 Great Deals out of 18,876 listings starting at $3,995
Used Chevrolet Colorado
250 Great Deals out of 27,515 listings starting at $1,000
Used Ford Explorer
913 Great Deals out of 63,684 listings starting at $799
Used Chevrolet Tahoe
591 Great Deals out of 33,009 listings starting at $1,500
Used Ford Ranger
182 Great Deals out of 5,559 listings starting at $900
Used Ford F-350 Super Duty
380 Great Deals out of 24,015 listings starting at $3,000

Used Cars For Sale

2018 Ford F-150 Lariat SuperCrew For Sale
6 listings starting at $49,217
2017 Ford F-150 Lariat SuperCrew For Sale
1,546 listings starting at $34,789
2016 Ford F-150 Lariat SuperCrew For Sale
7 Great Deals out of 159 listings starting at $28,923
2015 Ford F-150 Lariat SuperCrew For Sale
8 Great Deals out of 213 listings starting at $25,995
2014 Ford F-150 Lariat SuperCrew For Sale
9 Great Deals out of 148 listings starting at $18,500

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.