how to reset p0128 code

If you’re having trouble turning off the check engine light on your Dodge Grand Caravan, there’s no need to worry.Sometimes this light can stay illuminated even if there’s nothing wrong with the engine, but either way, learning how to turn it … Coolant thermostat temperature below regulating temperature. Air conditioning heater might not get hot enough because it uses the engine's coolant to warm up the vehicle's interior, and the coolant never reaches full operating temps. OBD codes (On-Board Diagnostics) let you know something is wrong with your car's engine. I lost maybe a quart including draining the coolant reservoir that I replaced. A bit of a PITA as everything on the Mini. Low engine coolant can cause all sorts of problems in the cooling system. You may see other codes, P0126 or P0128, when you get the P0125 code. Since a P0128 code is defined as Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature, many people automatically replace the thermostat. Brought it to the mechanic, who said it was code P0128. The cost of diagnosing the P0128 code is 1.0 hour of labor. Here is what I found according to my research: P0126 is either replace coolant temperature sensor or replace the thermostat. Code P0128. Code P0128 may trigger if the engine control module (ECM) determines that coolant temperature is lower than desired or does not increase quickly enough. P0128 Causes: Chevy Silverado. How Do I Reset the Check Engine Light on a Dodge Grand Caravan? 165 F stored in freeze frame data, changing the thermostat was fairly easy, ($32.50 from Auto Parts at AutohausAZ - OEM Auto Parts - Discount Replacement Parts, Resources and Car Care Tips) drain some antifreeze out of the system, remove the air tube from infront of the thermostat housing on the front of the engine, … Air conditioning heater might not get hot enough because it uses the engine's coolant to warm up the vehicle's interior, and the coolant never reaches full operating temps. possible causes 1. ect sensor is out of calibration. Took a few hours. how to reset p0128 code, Trouble code P0128 will also be recorded in the ECM ROM memory. I replaced the thermostat and the repeating code cleared immediately. The intent of the P0128 code is to indicate a faulty thermostat. One most common mistake car owners and some mechanic make is to replace the coolant thermostat without running a full diagnosis of the problem and checking the entire car before assuming it is the coolant thermostat. The P0128 is for the Thermostat function. i used my actron cp9145 and read the p-code. Jeep Code P0128 Meaning. When the code P0128 is set in the Powertrain Computer, the engine is either taking too much time to warm up to the proper operating temperature—more than fifteen minutes, as measured by the Coolant Temperature Sensor—or the operating temperature is going below the 160–170º F range during vehicle operation. You can verify this by reading the ECU fault codes. Reason For P0128 Code The reason of P0128 OBD-II Engine Trouble Code is Fuel Rail/System Pressure - … Any of these Best Selling OBD II code readers will be able to scan your Mercedes-Benz. It reappeared again yesterday. I have just purchased an 03 C230 1.8 L. I get the P0128 Eng temp low. I thought it might just need to be cleared so I cleared the code myself, only to find it kept popping back up. I then replaced the ECT sensor. It is triggered when your Chevy Silverado‘s coolant temperature fails to reach the proper operating temperature. Other sensors positioned throughout the vehicle … It was an open t-stat. after each I tried to reset the code with my reader and it will not reset. If you’re having trouble turning off the check engine light on your Dodge Grand Caravan, there’s no need to worry.Sometimes this light can stay illuminated even if there’s nothing wrong with the engine, but either way, learning how to turn it … I tried to diconnect the battery, it as did not work. P0128: This means that the engine's PCM detected that the engine has not reached the required temperature level within a specified amount of time after starting the engine. It showed that when the P0128 code was activated the car had been running 16 mins. The cost to diagnose the P0128 code is 1.0 hour of labor. It should be noted that most modern fuel injected engines to like to run at 200+ degrees. To be fair, the P0128 is not the most difficult of all the codes that you need to consider. Here are the symptoms associated with this trouble code: Fixing P0128 is usually a pretty easy thing to do, since 90% of the time it’s going to be the thermostat that is throwing the code. Save Share. I replaced the thermostat. He replaced the thermostat and coolant and reset the code to turn the the light off. source: what can keep causing check engine code p0128. Does a code p0128 reset itself after repairs or does it have to be cleared? 165 F stored in freeze frame data, changing the thermostat was fairly easy, ($32.50 from Auto Parts at AutohausAZ - OEM Auto Parts - Discount Replacement Parts, Resources and Car Care Tips) drain some antifreeze out of the system, remove the air tube from infront of the thermostat housing on the front of the engine, … The code doesn't go off for a week after we reset. If you feel little to no heat from the heater, then it’s a pretty good indication that the thermostat is the problem, and not a wiring issue. So I took it to my neighborhood mechanic and he told me that the monitors had to be reset at a Mazda dealer. After proper installation, P0126 went away, but P0128 stuck around. posted on jan 06, 2010 If it is easy to pinch the hose, typically water will be flowing through it. If the readings you get in the Coolant Temperature will not go beyond 160° – 170° F in the span of 15 minutes, then try to put your foot on the brake, shift to Drive and then press the throttle for around two to three minutes and see if the readings increase. You may have to register before you can post: click the register link above to proceed. It reappeared again yesterday. If you pinch your hose make sure that you are aware of the belted accessories and the fan. Drive the vehicle to see if the check engine light comes back on. The engine control module (ECM, a type of computer) in the Wrangler keeps track of the engine and its sensors. 0 votes . You can verify this by reading the ECU fault codes. P0128 code definition. Engine will take too long to warm up (especially on cold days). Same code. P0128 Code- Replaced TSTAT and Coolant, Light is still on If this is your first visit, be sure to check out the FAQ by clicking the link above. Most auto repairs shops charge between $75 … Couple of weeks ago my 2006 LR3 ran a p0128 fault code so I changed the T-stat and also the ECT sensor my problem is the mechanic told me to drive it so it can cycle thru on the computer and clear the code so the check engine light will shut off well the problem is the engine temp gauge on my dash board still is barely moving up usually sits between half and a quarter so what else could it be Engine will take too long to warm up (especially on cold days). All is good now. The P0128 code means that the engine coolant is not getting warm enough, fast enough. the price to change the thermostat depends on the shop. It can be really difficult to tell this in a vehicle that doesn’t have a temperature gauge. P0128 is not a serious threat to the immediate drivability of your Silverado. It could be one or more of the following problems: 2. check the operation of the thermostat it may be stuck open.3.inspect for low coolant level or for an incorrect coolant mixture. I reset the code and it hasn't been back since. It is not necessary to drain all the coolant despite what some writeups say. 0 votes . In most cases you will get a P0128 – Coolant temperature below thermostat regulating temperature fault code. OBD codes (On-Board Diagnostics) let you know something is wrong with your car's engine. Last time we reset we had a few days of extremely cold temps (-2) and it was good but then went off a week later again when temps were actually in the 30's. What causes a P0128 code on GM How to fix a P0128 code and service engine soon light on GM vehicles. The wirings should receive the proper signal from the sensors to get a proper reading. Since a P0128 code is defined as Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature, many people automatically replace the thermostat. It's inadvisable to reset an OBD code without addressing the problem that caused it, … Do I need to reset the ECU for the other code to clear or will it on its own after more driving? Ambient temp 34f. Good luck figuring out what is going on with your Silverado! It's inadvisable to reset an OBD code without addressing the problem that caused it, … You may see other codes, P0126 or P0128, when you get the P0125 code. The engine control module (ECM, a type of computer) in the Wrangler keeps track of the engine and its sensors. Reply. Most auto repairs shops charge between $75 and $150 per hour. The code doesn't go off for a week after we reset. You can reset your Jeep Wrangler's trouble codes right in your driveway if you have a socket set. Check coolant level 2. Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) What the P0128 code means. The P0125 code indicates a problem in the cooling system, likely with the Engine Coolant Temperature (ECT) sensor. Same as you, my heat was working fine, operating temp was in the right spot. Ambient temp 34f. The two codes from the check engine light are: P0126 & P0128. Air conditioning heater might not get hot enough because it uses the engine's coolant to warm up the vehicle's interior, and the coolant never reaches full operating temps. According to my research, 99% of the people who had this code needed to replace the thermostat. The fan can come on at any time. Here are the most common causes of P0128: Thermostat Stuck Open– Far and away, the most typical cause for the P0128 code is going to be a thermostat that is stuck open. hi, my "service engine soon" light came on 2 weeks ago. BAT Team Discussions for P0128. Like you too, a few months ago I replaced all of the same things you did! It’s a generic powertrain code, which means that regardless of who manufactured the vehicle, it’ll have the same meaning (1996+). So I took it to my neighborhood mechanic and he told me that the monitors had to be reset at a Mazda dealer. If not, the P0128 code may show up at any time and without even notifying where the actual problem lies. Here are the most common causes of P0128: A good way to tell if it’s a sensor issue or an issue with the thermostat is going to be whether or not the engine is running at its proper operating temperature or not. P0128 code. Last time we reset we had a few days of extremely cold temps (-2) and it was good but then went off a week later again when temps were actually in the 30's. You may have to register before you can post: click the register link above to proceed. Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) What the P0128 code means. Probable cause: 1. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. How To Diagnose And Repair Code P0128? The P0125 code indicates a problem in the cooling system, likely with the Engine Coolant Temperature (ECT) sensor. Its sensors aren ’ t many symptoms with P0128, when you get P0125... There is a problem with the engine control module ( ECM, a few months ago i replaced of... Extended period of time the mechanic, who said it was code P0128 will also be in! Engine type a temperature gauge to see if the check engine light in 2005... With my scan tool / ECU fault codes under the hood where radiator! Possible causes 1. ECT sensor is out of calibration proper installation, P0126 went away but. Sensors positioned throughout the vehicle to verify P0128 is the thermostat it be. 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