Why is P0128 still around after changing thermo?

20

Asked by Jun 17, 2015 at 01:35 PM about the 2007 Mazda MAZDA3 s Touring Hatchback

Question type: Maintenance & Repair

Hey guys I'm a 2007 Mazda3 Hatchback owner looking for some help with a trouble
code. Hope you guys can solve my problem.

I had codes P0126 and P0128 pop up. I like to do work myself to save money so I did
my research and after diagnosing the problem, I realized I need to replace the
Thermostat and the Engine Coolant Temperature Sensor.

After proper installation, P0126 went away, but P0128 stuck around. I thought it might
just need to be cleared so I cleared the code myself, only to find it kept popping back
up. So I took it to my neighborhood mechanic and he told me that the monitors had to
be reset at a Mazda dealer.

The other day I took it to the Mazda dealer and they reset the monitors which cleared
the trouble code... until about 45 miles later the code came back.

I have run diagnostics to see if the engine is reaching the correct temp. After 5-10
minutes of idol I am reading 170-190 degrees near the place where the engine meets
the thermostat and about 205 degrees at the top of the engine.

I'm truly stuck here and late on my smog check for my vehicle registration. Any help
would be appreciated, thank you!

1 Answer

210,665

http://www.obd-codes.com/p0128

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Mazda MAZDA3 Questions

Mazda MAZDA3 Experts

#1 Tom Demyan
Tom Demyan
Reputation 330
#2 Richard Boettger
Richard Boettger
Reputation 220
#3 FordNut
FordNut
Reputation 180
View All

Related Models For Sale

Used Mazda MAZDA6
232 Great Deals out of 14,536 listings starting at $1,450
Used Honda Civic
1,179 Great Deals out of 66,808 listings starting at $695
Used Toyota Corolla
1,401 Great Deals out of 69,171 listings starting at $988
Used Honda Accord
1,260 Great Deals out of 78,205 listings starting at $969
Used Mazda MAZDASPEED3
34 Great Deals out of 427 listings starting at $4,500
Used Ford Focus
1,258 Great Deals out of 60,029 listings starting at $1,295
Used Toyota Camry
1,526 Great Deals out of 101,100 listings starting at $700
Used Nissan Altima
1,334 Great Deals out of 84,997 listings starting at $1,795
Used Hyundai Elantra
941 Great Deals out of 52,930 listings starting at $895
Used Volkswagen Jetta
735 Great Deals out of 29,915 listings starting at $1,100
Used Subaru Impreza
204 Great Deals out of 7,920 listings starting at $1,795
Used Mazda MAZDA5
51 Great Deals out of 1,604 listings starting at $2,999
Used BMW 3 Series
1,797 Great Deals out of 40,973 listings starting at $1,250

Used Cars For Sale

2016 Mazda MAZDA3 s Touring Hatchback For Sale
24 listings starting at $23,966
2015 Mazda MAZDA3 s Touring Hatchback For Sale
24 listings starting at $17,900