Often asked: Code P0128 Bmw?

Code P0128 – Coolant Temperature Below Thermostat Regulating Temperature. The code P0128 – Coolant Temperature Below Thermostat Regulating Temperature means that the engine does not reach expected temperature after running for sufficient time, or in other words, it takes too long to warm up.

How do I fix code P0128?

What repairs can fix the P0128 code?

  1. Replacing the thermostat (most common repair)
  2. Replacing the coolant temperature sensor, or the wiring and connector associated with the sensor being damaged.

Can I drive my car with a 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.

Can low coolant cause 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.

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What can cause a P0128 code?

The most common cause for P0128 is the engine coolant thermostat is stuck open. When the thermostat does open, the hot coolant should start to flow and quickly warm up the radiator hose. If the radiator hose heats up slowly, the thermostat is stuck open or opening prematurely and needs to be replaced.

Where is the ECT sensor located?

The ECT sensor is located in the left of the cylinder head and is connected to the Engine Coolant Temperature Sensor. Underneath the air intake pipe and behind the right cylinder head is where the Engine Coolant Temperature Sensor is located.

How much does it cost to fix P0128?

For example, if the faulty component triggering a P0128 code is related to a bad coolant temperature sensor, repair costs ranged from $140.00 to $190. Although hand, if the problem is coming from a bad thermostat and requires replacements, expect to pay somewhere between $220 and $250.

How do I know if my coolant temperature sensor is bad?

Symptoms of a bad or failing coolant temperature switch (sensor)

  1. Poor fuel economy. One of the first symptoms associated with a problem with the coolant temperature sensor is poor fuel economy.
  2. Black smoke from engine.
  3. Overheating engine.
  4. Check Engine Light comes on.

What are signs of a bad thermostat?

5 Symptoms of a Bad Thermostat (and Replacement Cost)

  • #1 – Temperature Gauge Reading Higher (or Lower) Than Normal.
  • #2 – Sudden Air Temperature Changes Inside Vehicle.
  • #3 – Coolant Leaking.
  • #4 – Rumbling Noises.
  • #5 – Heater Malfunction.
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How do I know if my thermostat is stuck?

Checking For the Signs of a Bad Thermostat Look to see if the coolant is swirling/flowing immediately — that means the thermostat’s stuck open. If the coolant doesn’t flow after 10 minutes or so and continues to be stagnant after the temperature gauge indicates it’s hot, the thermostat’s likely stuck closed.

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 is a ECT sensor?

A coolant temperature sensor (CTS) (also known as an ECT sensor or ECTS (engine coolant temperature sensor) is used to measure the temperature of the coolant/antifreeze mix in the cooling system, giving an indication of how much heat the engine is giving off.

How do I fix code P0137?

What repairs can fix the P0137 code?

  1. Replacing the O2 sensor for bank 1 sensor 2.
  2. Repairing or replacing the wiring or connection to the O2 sensor for bank 1 sensor 2.
  3. Repairing exhaust leaks before the sensor.

How do I fix code P0014?

What repairs can fix the P0014 code?

  1. Resetting the fault codes and performing a road test.
  2. Replacing the oil and filter using the proper oil viscosity for the engine.
  3. Repairing or replacing the wiring to the camshaft oil control valve for bank 1 exhaust camshaft.
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What causes code P0138?

What causes the P0138 code? The engine control module (ECM) sees the voltage of the O2 sensor for bank 1 sensor 2 above 1.2 volts when the ECM has commanded the fuel to a targeted lean condition on that bank of the engine. The ECM detects the voltage high problem and turns on the Check Engine Light.

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