Resetting of CEL on 2007 Mazda 3

Asked by Dec 20, 2013 at 10:51 AM about the 2007 Mazda MAZDA3 i Sport

Question type: Maintenance & Repair

Guys
I had a CEL on my 2007 Mazda 3,  2.0L and the code was P0128. I was told to change the thermostat. Now that it has been done the CEL is still there.
How long after the problem is fixed that the CEL goes away. Thanks

6 Answers

217,455

It should have gone away, so it must be something else. Maybe your ECT or IAT sensor is faulty. You will have to do some diagnostic work if you don't want to just replace parts. Here is that link that will help understand what P0128 means....http://www.obd-codes.com/p0128

1 out of 1 people think this is helpful.

Thanks Tom So based on the info in your link: Low engine coolant level (Checked Good) Leaking or stuck open thermostat (New Thermostat Installed) Faulty cooling fan (running too much) (Not the case here) Faulty coolant temperature (ECT) sensor - POSSIBLE Faulty intake air temperature (IAT) sensor - POSSIBLE So I have to check the 2 sensors. One thing to note is that the CEL goes away in the summer time (talking about Arizona), and came back in the winter time. Does that indicate some other issue?

217,455

Probably related since it's temperature dependent.

1,115

You may find this article helpful as well: http://repairpal.com/OBD-II-Code-P0128

20

Did you ever figure this out? I am currently in the same bind you were in. Changed the thermo and engine coolant temp sensor but the light is still on.

2 out of 2 people think this is helpful.

I'm willing to bet the code is still stored in the computer. Unless someone actually cleared the CEL from the computer after the repair, the CEL light won't go out. You have to clear the code and drive the car for XXX miles for the computer to reset itself. If the repair was done, the code was cleared, and computer reset, and still have the CEL light, you may have a different problem

Your Answer

Add photo

Related Questions

MAZDA3

Looking for a Used MAZDA3 in your area?

CarGurus has 28,331 nationwide MAZDA3 listings starting at $1,200.

ZIP:

Search Mazda MAZDA3 Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Mazda MAZDA3 Experts

#1 Tom Demyan
Tom Demyan
Reputation 340
#2 Richard Boettger
Richard Boettger
Reputation 230
#3 FordNut
FordNut
Reputation 190
View All

Related Models For Sale

Used Mazda MAZDA6
195 Great Deals out of 15,694 listings starting at $2,400
Used Honda Civic
857 Great Deals out of 70,839 listings starting at $1,200
Used Toyota Corolla
996 Great Deals out of 68,482 listings starting at $1,595
Used Honda Accord
1,009 Great Deals out of 75,625 listings starting at $899
Used Ford Focus
885 Great Deals out of 58,883 listings starting at $800
Used Toyota Camry
1,237 Great Deals out of 97,273 listings starting at $1,250
Used Mazda MAZDASPEED3
37 Great Deals out of 380 listings starting at $3,500
Used Hyundai Elantra
657 Great Deals out of 53,012 listings starting at $895
Used Nissan Altima
1,091 Great Deals out of 83,137 listings starting at $1,600
Used Volkswagen Jetta
521 Great Deals out of 31,607 listings starting at $1,000
Used Subaru Impreza
180 Great Deals out of 11,185 listings starting at $1,899
Used BMW 3 Series
1,557 Great Deals out of 38,997 listings starting at $1,495

Used Cars For Sale

2016 Mazda MAZDA3 i Sport For Sale
3 Great Deals out of 946 listings starting at $12,278
2015 Mazda MAZDA3 i Sport For Sale
18 Great Deals out of 660 listings starting at $9,977
2014 Mazda MAZDA3 i Sport For Sale
4 Great Deals out of 258 listings starting at $8,591
2013 Mazda MAZDA3 i Sport For Sale
8 Great Deals out of 288 listings starting at $6,995