Skip the auto shop - Our mechanics make house calls

Q: Check Engine Light is on - code P0126

asked by on

Check Engine light. Error code P0126. Called Mazda and was told thermostat needs to be replaced
My car has an automatic transmission.

A: Hello there. Many common faults will cause ...

Hello there. Many common faults will cause the P0126 Code with your 2008 Mazda 3. The P0126 code meaning is "Insufficient Coolant Temperature for Stable Operation." This is telling us the car is reading a coolant temperature that is below specifications. Common faults that will cause this code are the coolant temperature sensor, thermostat, a wiring harness fault, or a failing temperature gauge.

A qualified technician, such as one from YourMechanic, can come to your location to determine why the Check Engine Light is on and suggest the needed repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: The Check Engine Light came on after washing my Durango

It sound like you got water into some of the electrical connections from the water that is sprayed sideways and from the bottom of some of these car washes. Also, your car was running, which could cause the water to...

Q: What is wrong with my car?

Is the check engine light illuminated on the dashboard? Stalling problems may come up when there are parts failing like the crankshaft position sensor, worn spark plugs or an old fuel pump. The squealing noise you are hearing may be...

Q: I have replaced the battery and alternator and the charging system light keeps popping on and then the car dies after a day or two

The problems you are describing do seem to lead me back to the charging system circuit. If the vehicle shuts down because of a dead battery, the problem has to be in the charging system as it is designed to...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...