It's funny because the ecu will report and read the actual temp sensor data even while these codes are thrown and thus disabling the gauge clusters. You have to clear those codes (which dont result in a CEL, and dont show up on normal basic blue tooth code scanners) and then everything will magically work again unless there's a real problem with the sensor. I have an x-431v device and it seems that once a code is thrown regarding the engine temp sensor, the car wont retest the sensor on next startup or even the 5th next startups. My car did the same thing after a rather jarring crappy road. I have a regular usb dongle for the ODB, I may take look into the BT version. Since there is a short of GM parts currently due to the strike, my dealer cannot get the part until. It stopped working 2 weeks ago, then started working again like 12 hours later. The P0128 code doesnt trip the light until I think the 3rd reported malfunction. If you can get your hands on a BT dongle then you can use the Torque App to read the engine sensors and see what the actual sensor reading is and or the codes that are stored. If it trips code P0128 from a stuck open thermostat or from someone putting a lower opening point stat than the OEM 192° thermostat and they didnt tune out the P0128 code it will kill the gauge and turn the fans on.Ī bad coolant temp sensor that the ECM relies on will cause it to go into fail safe as well. There are a couple of fail safes that will cause the ECM to kill the gauge and run the fans. While the coolant gauge in the cluster is dumbed down some on what it shows, the coolant temps you can read from the OBD2 port are live and 100% accurate. Have you changed out the thermostat by chance? Will replace and hopefully it will be this simple. If the output resistance (and voltage) changes incorrectly beyond its normal range, it could cause issues with your vehicle.Just had to order a coolant sensor as noone in Georgia has it in stock. Not checking the voltage output: After installation, it is important to check the voltage output of the coolant temperature sensor.Not replacing the coolant (liquid) after installation: After installing the coolant temperature sensor, it is preferred to replace the coolant as this will help to ensure that the sensor is working correctly.Not testing the sensor after installation: After the coolant temperature sensor has been installed, it is important to test it to ensure that it is functioning properly.Installing the wrong type of sensor: Make sure to check the specifications of your vehicle to ensure that you are purchasing and installing the correct type of coolant temperature sensor.This will help you avoid any potential issues while installing the sensor. Not checking the wiring: Before installing your new coolant temperature sensor, make sure to check the wiring to ensure that it is functioning properly.Not reading the instructions before beginning installation: Before you begin the installation process, be sure to read all instructions thoroughly so that you can avoid any rookie mistakes.Related Post: Where Is The Engine Coolant Temperature (ECT) Sensor LocatedĬommon Mistakes in Installing a Coolant Temperature Sensor Therefore, its replacement should be ensured occasionally. The coolant temperature sensor lasts for around 100,000 miles. Hence, the replacement of the coolant temperature sensor is worth it. Replacing the coolant temperature sensor on time will not only save you money but also increase the life of your car’s engine drastically. The engine keeps on heating and you will end up with a destroyed engine. If you keep on driving with any of these symptoms, it can be harmful to you and your car. The symptoms include poor fuel efficiency, engine overheating, engine releasing black smoke, and engine light indication. Common Mistakes in Installing a Coolant Temperature SensorĮngine Coolant Temperature Sensor Replacement Coolant Temperature Sensor Replacementīefore reaching the stage where the Engine Coolant Temperature sensor can no longer be used, many intermediate stages indicate that they start malfunctioning.Step 4: Drain And Replace The Fluid In The Radiator.Step 3: Jack The Front Side Of Your Car.Step 2: Collect All The Required Materials.
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