how to reset the check engine light

faith
0

Asked by faith 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
23,925

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
230

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
595

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
90

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
90

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
2,115

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
595

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.

18 out of 18 people think this is helpful.

Your Answer

Add photo

Related Questions

Millenia
Looking for a Used Millenia in your area?
CarGurus has 104 nationwide Millenia listings starting at $3,450.
ZIP:

Search Mazda Millenia Questions

Mazda Millenia Experts

#1 Steven Cisneros
Steven Cisneros
Reputation 560
#2 Keith12345
Keith12345
Reputation 300
#3 littlehorn
littlehorn
Reputation 160
View All

Related Models For Sale

Used Honda Accord"
1,059 Great Deals out of 71,562 listings starting at $999
Used Mazda MAZDA6"
178 Great Deals out of 16,184 listings starting at $1,500
Used Toyota Camry"
1,327 Great Deals out of 74,048 listings starting at $1,200
Used Hyundai Sonata"
795 Great Deals out of 58,189 listings starting at $1,595
Used Mitsubishi Galant"
65 Great Deals out of 1,949 listings starting at $2,500
Used Nissan Maxima"
347 Great Deals out of 16,217 listings starting at $995
Used Ford Ranger"
255 Great Deals out of 6,197 listings starting at $1,500
Used Nissan Altima"
1,065 Great Deals out of 72,724 listings starting at $1,495
Used Chrysler Sebring"
131 Great Deals out of 4,224 listings starting at $1,499
Used Chevrolet Impala"
1,453 Great Deals out of 52,989 listings starting at $600
Used Ford Mustang"
657 Great Deals out of 31,351 listings starting at $1,399
Used Lexus GS 300"
32 Great Deals out of 776 listings starting at $2,898
Used Toyota Corolla"
1,066 Great Deals out of 51,587 listings starting at $1,800
Used Ford Taurus"
335 Great Deals out of 18,328 listings starting at $995