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

223,565

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?

223,565

Probably related since it's temperature dependent.

1,125

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 29,975 nationwide MAZDA3 listings starting at $895.

ZIP:

Search Mazda MAZDA3 Questions

Mazda MAZDA3 Experts

#1 Tom Demyan
Tom Demyan
Reputation 350
#2 Richard Boettger
Richard Boettger
Reputation 240
#3 FordNut
FordNut
Reputation 190
View All

Related Models For Sale

Used Mazda MAZDA6
135 Great Deals out of 16,976 listings starting at $1,900
Used Honda Civic
669 Great Deals out of 77,410 listings starting at $1,000
Used Toyota Corolla
877 Great Deals out of 74,413 listings starting at $1,500
Used Honda Accord
811 Great Deals out of 81,609 listings starting at $899
Used Ford Focus
702 Great Deals out of 58,652 listings starting at $995
Used Mazda MAZDASPEED3
20 Great Deals out of 423 listings starting at $4,990
Used Toyota Camry
1,103 Great Deals out of 96,275 listings starting at $1,250
Used Nissan Altima
1,090 Great Deals out of 82,556 listings starting at $670
Used Hyundai Elantra
568 Great Deals out of 54,991 listings starting at $1,000
Used Volkswagen Jetta
468 Great Deals out of 31,234 listings starting at $150
Used Subaru Impreza
176 Great Deals out of 13,339 listings starting at $1,817
Used Mazda MAZDA5
50 Great Deals out of 1,918 listings starting at $1,200
Used BMW 3 Series
1,387 Great Deals out of 37,824 listings starting at $1,500

Used Cars For Sale

2016 Mazda MAZDA3 i Sport For Sale
3 Great Deals out of 682 listings starting at $11,791
2015 Mazda MAZDA3 i Sport For Sale
14 Great Deals out of 716 listings starting at $9,999
2014 Mazda MAZDA3 i Sport For Sale
257 listings starting at $8,777
2013 Mazda MAZDA3 i Sport For Sale
287 listings starting at $5,850