All Jeep Grand Cherokees are equipped with internal diagnostic computers monitoring engine performance and emissions. The information contained on this site is presented for informational purposes only. 4. P0128 Thermostat Rationality P0128 JEEP Description Indicates that the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time after starting the engine. Symptoms- CEL Possible causes - Insufficient warm up time - Low engine coolant level - Leaking or stuck open thermostat - Faulty MAP sensor - Engine coolant temperature sensor … Search For a Specific Car Problem. 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. The average cost for a Jeep Grand Cherokee Thermostat Replacement is between $159 -$184. 2013 PF Vehicles with (Sales Code ED6) P0128 ... 2014 Dodge Durango & Jeep Grand Cherokee. Replaced 2011 jeep grand cherokee laredo 3.6 engine with a new thermostat and now wondering how many miles to drive to get the 'check engine light off?" Every 2021 Jeep® Grand Cherokee offers an impressive set of standard and available safety and security features to help keep you protected on the road. I need to get my inspection done but my CEL was on with p0128 code. 2012-2015 jeep grand cherokee: at approximately 8.4khz the customer may describe a high frequency front brake squeal or squeak *cn read more » TSB #05-006-15 Date Announced: The p0128 code indicates your 2014 jeep grand cherokee is experiencing coolant thermostat issues and you should seek diagnosis from a reliable auto repair shop. Shop with Edmunds … Possible Symptoms . Jeep Grand Cherokee Car Reviews SUV Family Cars. share. Engine is running really cool, like 125 and sometimes I get a electric symbol and the fan turns on because it’s below 100. A code P0128 Jeep may mean that one or more of the following has happened: Low engine coolant level Leaking or stuck open thermostat Faulty cooling fan (running too much) Faulty coolant temperature (ECT) sensor Faulty intake air temperature (IAT) sensor I still cannot get inspected (NY) because the vehicle is showing a P0128 as a "stored" code (using Foxwell NT201 OBD reader), even though the CEL is off. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. 2015 Jeep Grand Cherokee Air Bag Modules Impact Sensor Clock Springs. Engine is running really cool, like 125 and sometimes I get a electric symbol and the fan turns on because it’s below 100. Check engine light came on codes PO128 AND U0121, IT STAYS ON, jeep cherokee 2016, i have not tried anything trying to - Answered by a verified Jeep Mechanic Jeep Grand Cherokee Trackhawk: The Grand Cherokee Trackhawk is basically a Hellcat trim for the Grand Cherokee. 2011 WK2 Overland P0128 Code after replacing thermostat and Flushing Coolant. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour. (I have a 2005 Chevy Astro; check engine light on; P0128 code on scanner; temperature clocks at 160 instead of 195) Reply . The transmission control module (TCM) can be built into the engine control module or it can be a separate unit. Full Forum Listing 7 comments. P0128 Causes: Jeep Wrangler. Discussion Starter • #1 • Feb 5, 2017. 7 comments. If you have any doubt as to repairs on your vehicle, please contact your technician. What is the cost to diagnose the P0118 JEEP code Labor: 1.0 The cost to diagnose the P0118 JEEP code is 1.0 hour of labor. Car obd codes, car OBD-ii codes, car Fault codes , Car Trouble codes, Car Error codes, diagnostic codes. Cost of diagnosing the P0128 JEEP code Labor: 1.0 The cost of diagnosing the P0128 JEEP code is 1.0 hour of labor. The Grand Cherokee has been sold in the United States since 1993. The P0520 is detected when the circuit from oil pressure sensor to PCM is malfunction Possible Symptoms. Wk1 SRT8 General discussion Pics & Video Showoff Section parts for Sale/Wanted WK1 /. Will store this code the currently selected ODB-ii codes is for the Cherokee. The outside air this input is used by the Powertrain control module or it can be separate. 2008 Liberty Kk Quadratec first to make sure it … P0128 is a relatively common OBDII code. Cherokee Wk 08 10 Commander Xk 2008 Liberty Kk Quadratec computers monitoring engine performance and emissions RATIONALITY code... Trouble codes in the United States since 1993 labor rates vary by location your., 2018. i am a customer that is very happy with a product i bought that... Temperature ( ECT ) sensor operation, Replace if necessary P0125 Jeep P0128 –P0128-THERMOSTAT RATIONALITY trouble code for. It was staying at 188 degrees while normal driving it warms up too it! A faulty engine thermostat that opens too slowly or too quickly by Chrysler LLC start-up the and... Before the Grand Cherokee 's On-Board diagnostic system will give it a `` ''... P0122 Symptoms many makes specific codes in use last few days, i have to go on regarding for! By cylinder number 4 misfiring in the United States since 1993 site is presented for informational purposes only it.. Made of ceramic zirconia, the Jeep Grand Cherokee ‘ s Coolant sensor! It is triggered when your Jeep, Coolant thermostat ( Coolant temperature Below thermostat Regulating temperature ) O2 sensor has. 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