Q: Check Engine code P128

asked by on

I have Check Engine Code P0128. Autozone is telling me that it is my Coolant thermostat sensor. Others are telling me it could be the whole thermostat needing replaced. Is there any way to know which before ordering parts?

My car has 70000 miles.
My car has an automatic transmission.

the most common cause for this code is the thermostat replacement. The computer expects the engine to get to a temperature within a set amount of time and a stuck open thermostat will cause it not to reach operating temperature.

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. Check Engine code P128

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: 2012 Hyundai sonata My brake lights won't come on also the shifter won't move from park unless done manually

Inasmuch as the problem started after the bushing replacement, the cause is most likely a loose connection in one of the wiring harnesses that was removed when you replaced the bushing. The reason the brake lights don't work at the...

Q: Preferred oil for a 2016 Chrysler 200

The type of oil that should be used for a specific application depends largely on the driver's driving habits, the environment in which the car is driven, the mileage on the car's engine, and the limits that the engine may...

Q: My 2015 Dodge Challenger scat pal oil pressure goes up when I'm driving to 53 psi and returns to 30 psi when I come to a stop

Hi there. Typically when you have oil pressure issues like this, it is due to one of two common causes. Either the oil pump or oil pump sensor is faulty or you have an obstruction inside the filter. Since you...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...