Code p0128

In some cars, however, the problem could be solved by reprogramming the engine computer (PCM) with an updated software. See common problems below. An Engine Coolant Temperature ( ECT) sensor monitors the temperature of the coolant. The air flow coming into the engine is accumulated and used to determine if the vehicle has been driven within.

The Engine Control Module (ECM) determines this length of time based on ambient temperature. The powertrain control module (PCM) tracks how long it takes for the engine of a vehicle to reach and maintain the correct operating temperature. When the correct engine operating temperature is reache the powertrain control module orders the fuel system to enter “closed loop” where readings from the oxygen sensors are used.

Experience: Ase Master Certifie GM Master Certified Tech. Hello, code PO1is for thermostat. An engine coolant temperature (ECT) sensor monitors the temperature of the coolant. Leaking or stuck open thermostat. In other words the engine is running too cold – or at least the PCM thinks it is.

L engines where the temperature gauge stays on COL but the cooling fans are on. Faulty intake air temperature (IAT) sensor. Fault codes that can be triggered due to engine coolant thermostat failures.

Mercedes thermostat part numbers.

Choose your car for a more accurate estimate. If you would like to get a precise diagnosis of the fault codes,. Leave a comment below or tell us if the information above help you fix the code. Thermostat rationality) The Dealer replaced the thermostat and after drive cycles, it came on again for the same code. SAVE MONEY and buy Motor Oils and Car Parts online - FREE SHIPPING!

I have replaced the thermostat two times drive approximately two hundred miles light comes back on and throwing same code.

Replaced ECT sensor drove approximately fifty miles same thing! Hate to keep throwing parts please advise. There is a low level of engine coolant. The warm-up time is not enough.

The Coolant Temperature Sensor (ECT) may be defective. The ECT (Engine Coolant Temperature) cable system can be short. BUT they are auto diagnostics 101. I do have the 180TS and CAI modified Diablo tune with my fan settings lowered.

For proper and efficient warm up, the coolant needs to stay trapped inside the engine to absorb the heat until it reaches the right temperature. A skewed IAT sensor can cause this DTC to set. This is the thermostat’s job.

Confusing part is that the Temperature is where it has always been without the Trouble Code. Possibly not even the thermostat. It could be the sensor but is much more likely to be the thermostat itself. Welcome to Reddit, I bought my mini yesterday, took a long drive today, on the way home the check engine light comes on. Next day, Check Engine Light came back on while cruising about 70mph on the highway.

Brought to Dealer and the thermostat was replaced. Anyone had this issue and how was the issue resolved. Will have to bring back to Dealer. With this code it is possible the thermostat is the issue or the coolant temp sensor.

Windows Error Bad Image. Repair done prior = A year ago hired a mechanic to supposedly change thermostat due to overheating engine. The truck had the MIL came on Sunday then by Tuesday, it turned off. However, the temperature gaughe is working normal. The check engine light is on.

It goes up only when driving up hill. Other than that it is just normal. That code sets when the engine does not reach a certain temperature within a given amount time.

While the car is standing still the car will warm up quickly even without a thermastat. No Airflow through the radiator until the fan comes on. SPEED Up Your PC FREE Scan Now! A bit of a PITA as everything on the Mini.

I read various DIY articles and glanced through Bentley. It is not necessary to drain all the coolant despite what some writeups say. I lost maybe a quart including draining the coolant reservoir that I replaced.

It could mean that the thermostat is stuck in the open position, and. Basically means it is running too cool.