Does the coolant temperature sensor control the thermostat?
On most vehicles, the coolant temperature sensor (CTS) can be found somewhere near the engine thermostat, which allows it to function optimally. The sensor works by measuring the temperature that’s being given off by the thermostat and/or the coolant itself. The temperature is then sent to the on-board control system.
What does code po128 mean?
The P0128 code means that the engine coolant is not getting warm enough, fast enough. In other words, there is a problem with the engine operating temperature not being reached within a certain amount of time. The Engine Control Module (ECM) determines this length of time based on ambient temperature.
What can cause insufficient engine warm up?
Damaged coolant temperature sensor wiring or connection. Low coolant levels. Coolant leaks. Thermostat is stuck open.
What does a code p0125 mean on a car?
A code P0125 may mean that one or more of the following has happened: Insufficient warm up time Low engine coolant level Leaking or stuck open thermostat Faulty coolant temperature sensor The simplest thing to do is to reset the code and see if it comes back.
Can a thermometer be used on a p0125?
The P0125 is properly diagnosed with a scan tool and infrared thermometer capable of sensor readings (more advanced than what you might find at an auto parts store). A qualified technician will read the data from the scan tool and can compare it with the temperature readings, ensuring they match,…
What is the p0125 code on a Toyota Matrix?
Discovered that a new clue might be that the sputter, under… I’m also getting a recurring P0125 code on a 2003 Toyota Matrix. The engine remains in open loop and the CTS reading from the scanner shows approximately 180 deg F while running.
What causes an OBD-II trouble code to come back?
If the code comes back, the problem is likely going to be the result of the above causes (faulty thermostat, faulty ECT sensor, or a low coolant level). Other ECT sensor and circuit related DTCs: P0115, P0116, P0117, P0118, P0119, P0128