- Replacing the thermostat (most common repair)
- Replacing the coolant temperature sensor, or the wiring and connector associated with the sensor being damaged.
Is it safe to drive with P0128 code?
Can I drive my vehicle with a P0128 trouble code and illuminated CEL? You may drive your vehicle with a P0128 trouble code. You will not notice any issue except for maybe the temperature gauge never reaching normal levels, and possibly the Check Engine light being illuminated.
What causes a P0128 code?
Causes of a P0128 code include: A bad coolant temperature sensor. The cooling fan is stuck on. A bad intake air temperature sensor. A thermostat that’s malfunctioning or stuck open (electronically controlled or traditional)
Can low coolant cause a P0128 code?
Low engine coolant can alter the engine running temperature enough to signal trouble code P0128. Your intake air temperature sensor, coolant temperature sensor and coolant fan could also signal this trouble code, so these should be inspected after you look over your thermostat and coolant level.
How much does it cost to fix a P0128?
Depending on the root cause of the issue, the costs of fixing the code P0128 will most likely range from $150-$250.
How do you fix low coolant temp?
The easiest way how to fix low coolant is to begin filling your coolant back to acceptable levels and allow the coolant to soak back into the system. Upon opening your radiator cap, you will see indicators such as “max” and “min” which indicates the level of the coolant mixture currently in your tank.
How do I know if my coolant temp sensor is bad?
- Poor Fuel Economy.
- Irregular Temperature Readings.
- Black Smoke from Your Exhaust.
- Your Engine is Overheating.
- Your Check Engine Light is On.
What happens if engine runs too cold?
If you run your engine cold all the time, you’ll most likely experience increased fuel consumption across the board. Additionally, you’ll find higher amounts of carbon buildup at various parts of the engine. The most damaging effect of feeding a fuel-rich mixture to the engine is excess fuel reaching the exhaust.
What causes low coolant temp?
External leaks from radiator hoses, connections between hoses, or from the radiator itself. Radiator cap leaks due to a faulty seal on the cap where the pressurized coolant can leak out. Internal leaks where coolant may leak out of places such as the engine’s head gasket.
How do I know if my thermostat is stuck open?
Symptoms of a bad thermostat Thermostat stuck open: When the thermostat is stuck open, the engine temperature drops below normal when driving, especially on the highway in cold weather. A stuck-open thermostat can also cause a lack of heat from the heating system. The Check Engine light may come on too.
Will a stuck thermostat throw a code?
the most noticeable issues occur when the thermostat gets stuck in either the open or closed position. a malfunction can result in a trouble code, generated by the engine’s computer, which can turn on your check engine light.
Where is the temperature sensor located?
It is often located behind the front bumper, but on some vehicles can be found in the door mirror behind the glass. It is used to estimate air density and by the air conditioning system – the system will not function if the air outside is too cold.
How much does it cost to replace a coolant thermostat?
So fixing a car thermostat will usually cost somewhere in the range of $200 to $300. But you’ll need to speak with your mechanic to get a more exact estimate. More than labor costs, the price will depend on your car.
How much is a coolant temperature sensor?
On average, the cost of a coolant temperature sensor ranges from $20-$80, while the cost of labor ranges from $50-$250. In total, one could expect to pay $70-$330 to have their engine coolant temperature sensor replaced.
What does coolant temperature below thermostat mean?
The generic P0128 code stands for “Engine Coolant Temperature Below Thermostat Regulating Temperature”. This basically means that the coolant in the engine isn’t reaching the ideal operating temperature and that the engine is essentially running cold.
How do I know if my BMW thermostat is bad?
- High temperature readings. The main symptoms of a failing thermostat are related to engine overheating.
- Erratic changes in temperature.
- Leaking coolant.
- Increased fuel consumption.
- Unusual noises.
How do you tell if a thermostat is bad in a car?
- The temperature gauge reads high and the engine overheats.
- The temperature changes erratically.
- The vehicle’s coolant leaks around the thermostat or under the vehicle.
How do you know a thermostat is bad?
- Thermostat Has No Power.
- AC or Furnace Won’t Turn On.
- Heater or AC Won’t Turn Off.
- Thermostat Doesn’t Match Room Temperature.
- Thermostat Doesn’t Respond.
- Short Cycling.
- Thermostat Forgets Programmed Settings.
Is there a fuse for coolant temperature sensor?
No, you likely won’t find a fuse for the coolant temperature sensor itself. You can find a fuse for the engine control module though, which sends the signal to the coolant temperature sensor.
How do you reset the coolant light on a BMW?
Why is my coolant light on but my coolant is full?
your radiator cap is bad the radiator cap keeps the coolant inside the system, and at the right pressure. a faulty cap can allow coolant to escape, which can turn on the warning light. solution: you or a mechanic can replace the bad cap with a new one.
Can you drive with a bad coolant temp sensor?
Yes, you can drive with a bad coolant temperature sensor. When the coolant temperature sensor goes bad the ECU of the car defaults to a static reading. But it is not recommended to keep driving with a bad engine coolant temperature sensor since it performs critical cooling, heating, and fuel adjustment functions.
Can you clean a coolant temperature sensor?
In most cases, there is little to clean and reuse as when a sensor goes out of calibration from wear or mechanical damage, or fails due to heat damage, the only repair is to replace them.
Does coolant temp sensor affect AC?
Inconsistent cooling If the ambient temperature sensor fails or is sending out an inconsistent signal, then the AC system may have trouble maintaining cool and comfortable cabin temperatures.
How long should it take for a car to reach operating temperature?
In most cars, the temperature needle will be at or near the center when the engine is at normal operating temperature, which usually takes at least a minute or two to reach after starting a cold engine.