WebJun 17, 2024 · The P0128 code is set when the engine control module (ECM) determines that coolant temperature is lower than the original equipment thermostat’s opening temperature. In this mode, when … WebOct 2, 2024 · In most cases, if the thermostat is stuck closed or open, the Check Engine light will come on. The most common Check Engine light codes related to the thermostat are P0128 and P0126. Mechanic …
Q: Check Engine light revealed thermostat problem
WebSep 27, 2016 · If you have an ODB reader that will give you realtime data, look at the coolant temp on both sides of the thermostat. If at operating temp, the temps are the same, and less than about 200 than the thermostat is stuck open. If the temps are really different, like 200 and 250 or more, then it's stuck closed. WebJan 7, 2024 · How to Diagnose the P0128 Trouble Code Start with the engine coolant thermostat. Cool the car down completely. Start the engine and put your hand on the... One of the hoses from the radiator, should … horse head marking descriptions
Q: Check Engine Light on again after thermostat replacement.
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. See more This generic trouble code can affect most makes and models of vehicles. The code is signaled when your powertrain control moduledetects an … See more Your thermostat is an essential component for regulating coolant temperature and checking for more serious issues with your engine. However, a damaged thermostat won’t typically cause any performance issues. So, what … See more Start with the easiest repair solution, which is low coolant levels. Before you start, turn off your engine and wait until it’s sufficiently cool to … See more The most likely cause is a leaking or stuck open thermostat. Related issues would typically signal another error code, so this should be one of the … See more WebOct 25, 2016 · Check Engine Light is on Inspection. $94.99 - $114.99. Get a Quote. Or For Any Other Auto Repairs. Get a Quote. Kevin Gainer. Automotive Mechanic. 35 years of experience. If you can write back in with the exact Diagnostic Trouble Code (DTC) that Autozone downloaded for you, we can give you a more precise answer. WebFeb 6, 2024 · The first thing you should do for diagnosing is to scan your car and can check whether the P0128 code is existing or not. Then, check out whether there are some error codes or not. If there are some issues, you should fix them first. After that, scan the coolant levels and see what’s the situation of it. ps4 disc player