Q: Q: Code P0128

asked by on

The Check Engine Light came on, and I had a diagnostic, which showed code P0128, which has to do with thermostat.

The code has to do with the thermostat not performing as specified, or the temperature sensor is not working correctly. You could first replace the thermostat, since it is the most common cause, and see if the code returns. If it returns, then replace the sensor. Or replace both components and be done with it. I recommend having a mechanic help you with the thermostat replacement, and/or temperature sensor replacement.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Q: Code P0128

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: The car's back rear wheel is bent as if it were hit in the back, which it was. Is the control arm damaged?

If the control arm is bent, almost certainly the wheel will be bent first, not the other way around. If you jack up the rear, block the other wheels to be sure the car can't shift or roll, put the...

Q: Can I have my jump starter plugged in to an outlet as if i was charging, then connect it to a batter and turn it on? Will that cha

If the vehicle battery happens to be more than 5 years (60 months) old, don't bother fooling with it. Buy a new battery and be sure the new battery is fully charged by the store before you install it, otherwise...

Q: My car bogs down abit after a cold start and then accelerates fine after that

There are a number of things that may cause the car to hesitate when accelerating when cold such as low fuel pressure, a dirty or faulty mass air flow sensor, clogged or dirty fuel injectors, or potentially a bad oxygen...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.