how to reset the check engine light

faith
0

Asked by Aug 05, 2007 at 12:20 AM about the 2002 Mazda Millenia 4 Dr S Supercharged Sedan

Question type: Maintenance & Repair

How do you reset the check engine light on a Mazda Mellenia 2002?

7 Answers

lightGear
27,475

Not exactly sure how to reset the computer. I know on my car if you unhook the battery from the car and then reconnect it resets the system.

1 out of 1 people think this is helpful.
Andrzej Michalski
270

the light comes on when 1) the emmision excedes the 1.5 goverment standards, 2) component faliure, 3) or if the PCM can't "see" a component. so if the light is still on after a "fix" then you did not fix it, because the car will do a self test and if everything is correct then the light will turn off.

5 out of 5 people think this is helpful.
Steven Cisneros
665

The light will not turn off by itself, it stores the codes for diagnosis even if the problem went away. To reset it disconnect your negative battery cable and step on the brake to make sure everything is discharged. Reconnect and it should be good, if the light comes on again, go get your codes read and you can visit MazdaWorld.org and we can help you solve the problem.

9 out of 9 people think this is helpful.
PeteandKatie Gray
110

Sometimes Disconnecting the negative battery cable resets, but on newer cars you have to hook up a scan tool and clear the codes depending on the code that was set. some codes do not go away until so many drive cycles have completed which can take a long time. Some times that car has to run that test again and it has to pass it so many times before it goes away.

1 out of 1 people think this is helpful.
PeteandKatie Gray
110

It could be fixed codes do not always turn off after you fix the component. the PROPER way to shut the light off is to clear the codes with a scan tool. if the light returns then it wasn't fixed.

1 out of 1 people think this is helpful.
Daniel Reed
2,605

Disconnecting the battery will not clear the codes, you need a scan tool. The ECM has an internal battery to keep the codes in case the battery gets disconnected. By the way, when the light comes on, that means your car has an emissions control issue, and that should be fixed, not cleared and ignored. Also, your car has almost 2000 different codes available, so it needs to be scanned to find the issue.

Steven Cisneros
665

We are not talking about "most cars" we are talking about a Mazda Millenia in this case. I own one and know for a fact that disconnecting the battery and draining the capacitors will clear the codes the same way that clearing the codes with a code scanner would. Yes a CEL light does mean you have a problem that should be fixed but sometimes before fixing the problem you should clear the codes and see if the problem comes back and then diagnose the problem from there.

19 out of 19 people think this is helpful.

Your Answer

Add photo

Related Questions

Millenia

Looking for a Used Millenia in your area?

CarGurus has 98 nationwide Millenia listings starting at $3,995.

ZIP:

Search Mazda Millenia Questions

Mazda Millenia Experts

#1 Steven Cisneros
Steven Cisneros
Reputation 630
#2 Keith12345
Keith12345
Reputation 340
#3 littlehorn
littlehorn
Reputation 200
View All

Related Models For Sale

Used Mazda MX-5 Miata"
38 Great Deals out of 4,009 listings starting at $2,900
Used Acura RL"
37 Great Deals out of 672 listings starting at $2,290
Used BMW 5 Series"
552 Great Deals out of 20,758 listings starting at $1,000
Used BMW 7 Series"
113 Great Deals out of 5,393 listings starting at $1,995
Used Honda Accord"
637 Great Deals out of 75,765 listings starting at $1,400
Used Chevrolet Impala"
442 Great Deals out of 30,097 listings starting at $1,595
Used Lincoln LS"
10 Great Deals out of 703 listings starting at $1,000
Used Acura TL"
120 Great Deals out of 4,933 listings starting at $1,925
Used Mazda MPV"
442 listings starting at $2,500
Used Lexus ES 300"
18 Great Deals out of 1,084 listings starting at $2,500
Used Mazda 626"
347 listings starting at $2,495
Used Mazda MAZDA6"
131 Great Deals out of 18,077 listings starting at $2,000
Used Nissan Maxima"
260 Great Deals out of 23,407 listings starting at $1,500
Used Mazda B-Series Pickup"
3 Great Deals out of 198 listings starting at $2,300
Used Lexus IS 300"
15 Great Deals out of 2,136 listings starting at $2,999