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

242,505

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 of 1 people found this 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?

242,505

Probably related since it's temperature dependent.

1,145

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 of 2 people found this 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

  • Resetting of CEL on 2007 Mazda 3 6 answers

    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 C...

    2007 Mazda MAZDA3 i Sport

    -

    Maintenance & Repair

  • 2007 Mazda 3 Replaced Thermostat Now Cool Air on Idle 2 answers

    2007 Mazda 3 - Threw a CEL - (P0128 - Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature) Fixed CEL by Replacing Thermostat - I Flushed Coolant and Replaced Thermostat - ...

    2007 Mazda MAZDA3 GS

    -

    Maintenance & Repair

  • 2007 Mazda 3 Five Speed 1 answer

    Had my AC Compressor replaced last year. Now when i turn on the AC while parked or idle at the stop light I hear a strange scratching/clicking sound. If I rev the engine above 1500 rpm it goes away...

    Mazda MAZDA3

    -

    Maintenance & Repair

  • Mazda 3 1 answer

    Would a Mazda 6 engine fit a Mazda 3? Both engines are 2.3 none turbo.

    2007 Mazda MAZDA3 GS

    -

    Maintenance & Repair

  • can you replace my cd player in my 2007 mazda 3 ? 1 answer

    my 2007 mazda 3 cd player has jammed up and i would like it repaired or replaced as i still love the car.

    2007 Mazda MAZDA3

    -

    Maintenance & Repair

MAZDA3

Looking for a Used MAZDA3 in your area?

CarGurus has 32,511 nationwide MAZDA3 listings starting at $1,000.

ZIP:

Search Mazda MAZDA3 Questions

Mazda MAZDA3 Experts

#1 Tom Demyan
Tom Demyan
Reputation 390
#2 Richard Boettger
Richard Boettger
Reputation 240
#3 Sping
Sping
Reputation 150
View All

Related Models For Sale

Used Mazda MAZDA6
205 Great Deals out of 15,801 listings starting at $1,395
Used Honda Civic
867 Great Deals out of 89,075 listings starting at $1,299
Used Toyota Corolla
942 Great Deals out of 70,489 listings starting at $1,500
Used Honda Accord
1,038 Great Deals out of 77,387 listings starting at $999
Used Ford Focus
690 Great Deals out of 57,469 listings starting at $795
Used Toyota Camry
1,116 Great Deals out of 91,351 listings starting at $1,222
Used Hyundai Elantra
636 Great Deals out of 42,607 listings starting at $700
Used Nissan Altima
1,254 Great Deals out of 79,775 listings starting at $1,500
Used Mazda MAZDASPEED3
19 Great Deals out of 313 listings starting at $4,500
Used Volkswagen Jetta
484 Great Deals out of 44,231 listings starting at $800
Used Subaru Impreza
191 Great Deals out of 19,704 listings starting at $1,295
Used BMW 3 Series
961 Great Deals out of 30,762 listings starting at $1,000

Used Cars For Sale

2016 Mazda MAZDA3 i Sport For Sale
29 Great Deals out of 1,329 listings starting at $10,200
2015 Mazda MAZDA3 i Sport For Sale
29 Great Deals out of 450 listings starting at $8,999
2014 Mazda MAZDA3 i Sport For Sale
34 Great Deals out of 469 listings starting at $8,100
2013 Mazda MAZDA3 i Sport For Sale
15 Great Deals out of 241 listings starting at $5,495

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.