thermostat rationality code jeep wrangler

How to repair P0128 Jeep code Thermostat Rationality. P0128 Thermostat rationality The likely cause is the thermostat, that or you have low coolant level, You can even set this code if you use just plain water. If you have a code P0128, thermostat rationality, that would indicate a thermostat partially stuck open and not maintaining proper coolant temperature. Jeep Wrangler JK Diagnostic Code List | 2007-2018. Symptoms- CEL Possible causes - Insufficient warm up time - Low engine coolant level - Leaking or stuck open thermostat - Faulty MAP sensor 2017 Jeep Wrangler Thermostat Keep your ride's engine temperatures in check with a new 2017 Jeep Wrangler thermostat. P0128 is a relatively common OBDII trouble code. A good way to at least get a good idea as to whether or not it’s the thermostat or the sensor is to start the car cold and let it idle for ten or so minutes. If your ride starts to overheat, immediately replace the Jeep Wrangler thermostat with a durable part from AutoZone. The P0128 code means that the engine coolant is not getting warm enough, fast enough. 2015 Jeep Wrangler. August 20, 2018. Jeep Wrangler P0128: Coolant Thermostat – Below Temp November 5, 2018 by Jason P0128 is a relatively common OBDII trouble code. I did a DTC code check with my Superchips and got a DTC code of P0128-Thermostat Rationality....which leads me to thing that the thermostat is stuck open. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. If you have a Windows Machine: Use Ctrl + F (Control + F) to type in your Wrangler DTC code and find it in the table. Also, a mechanic will typically check under the hood where the radiator hose meets the thermostat housing. Services Performed. Your Jeep Wrangler simply cannot be stopped. 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. The fan can come on at any time, 8L90E Specs, Performance, and Identification, TH400 Transmission Specs, ID, and Common Problems, Jeep Renegade P0128: Coolant Thermostat – Below Temp, Jeep Liberty P0128: Coolant Thermostat – Below Temp, Chevy Impala: Brake Lights Stuck On → Diagnosis. The auto repair labor rates vary widely across the country, and even within the same city. Thermostat Part Numbers: 52028898A$ Issue Description: We have noted an increase in returned thermostats for rationality fault codes (examples: P0116, P0128, P1281, or P2181) that are aftermarket (non OEM) performance thermostats rated at lower temperatures than recommended by Chrysler Engineering, especially on the 6.1L SRT Hemi. 2018 (JL) Jeep Wrangler NOTE: This bulletin applies to vehicles within the following markets/countries: North America, APAC, EMEA and LATAM. Do I need to take the Jeep in to have a code determined or is there a way to get a code to come up. Check here for special coupons and promotions. Even when I was overheating, the gage never went past 1/2. The plaintiffs claim they leased a new 2013 Jeep Wrangler in 2013. I have 2012 jeep JK wrangler sport. What is the cost to diagnose the P0128 JEEP code Labor: 1.0 The cost to diagnose the P0128 JEEP code is 1.0 hour of labor. August 27, 2015 ; ... P0128 - Thermostat Rationality P0129 - Barometric Pressure Out-Of-Range Low P0131 - O2 Sensor 1/1 Circuit Low P0132 - O2 Sensor 1/1 Circuit High It can be really difficult to tell this in a vehicle that doesn’t have a temperature gauge. Please enable Cookies and reload the page. Search For Your Wrangler DTC Code. Jeep JK Computer Diagnostic Codes B1001 ‐ A/C SWITCH REQUEST INPUT CIRCUIT LOW (ATC & MTC) ... P0128 ‐ THERMOSTAT RATIONALITY P0129 ‐ BAROMETRIC PRESSURE OUT‐OF‐RANGE LOW ... A forum community dedicated to Jeep Wrangler JK owners and enthusiasts. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. Cost of diagnosing the P0128 JEEP code Labor: 1.0 The cost of diagnosing the P0128 JEEP code is 1.0 hour of labor. 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. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. 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. If the tstat is stuck open, it's not going to hurt your motor, HOWEVER, your fuel injection system is designed to run based on the ECT input, so it could affect mpg and engine performance if the PCM isn't getting an ideal reading from the ECT sensor. Engine Code - P0128 (Thermostat Rationality) Thought I'd find out why my check engine light is on and it said it's Thermostat Rationality. Renegade P0128 Symptoms I thought I read something about getting a code to come up where the odometer display is, but I couldn't find it. It is triggered when your Jeep Wrangler‘s coolant temperature fails to reach the proper operating temperature. Further, Chrysler refuses to cover the costs of labor and repair for the manufacturing defect during the warranty period, claiming instead that the problem was caused by owner misuse or external factors, the Jeep Wrangler class action lawsuit alleges. 2018 Jeep Wrangler « Back to Wrangler TSBs ... P0128 - Thermostat Rationality(Sales Codes NA1 with NBQ or NB6 Only - APAC and EMEA Only). P0128 code definition. 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. Coolant temperature is between 179- 186 degrees. Another way to prevent getting this page in the future is to use Privacy Pass. You purchased it for its rugged utility. 4/3/2020. P0128is a relatively common OBDII trouble code. My heat is not blowing hot, just like-warm. Service Date. Letting them run too cool can problems after an extended period of time. FOUND CODE P0128- THERMOSTAT RATIONALITY PROBLEM. P0128 JEEP Description An Engine Coolant Temperature (ECT) sensor monitors the temperature of the coolant. In other words, there is a problem with the engine operating temperature not being reached within a certain amount of time. The fan can come on at any time. Any connection or thoughts? I have a 2004 dodge dakota with a po128 code and a small evap leak code . Most auto repairs shops charge between $75 and $150 per hour. 2013JKU error code and message P0128 "Thermostat Rationality". Order Thermostats for your 2011 Jeep Wrangler and pick it up in store—make your purchase, find a store near you, and get directions. Brandon Libby. Jeep Wrangler JK Diagnostic Codes for 2007 to 2018. • RECOMMEND NEW THERMOSTAT ASSEMBLY. Trouble code PO128. It’s a generic powertrain code, which means that regardless of who manufactured the vehicle, it’ll have the same meaning (1996+). 102,453. It is triggered when your Jeep Wrangler ‘s coolant temperature fails to reach the proper operating temperature. Engine light came on 1 day ago. Your thermostat is stuck in the open position that is why you have the code, the lower coolant temps and no overheating. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. ... P0111 - Intake Air Temperature Sensor Rationality P0112 - Intake Air Temperature Sensor Circuit Low ... P0128 - Thermostat Rationality P0129 - Barometric Pressure Out-Of-Range Low P0131 - … When this part isn't working properly, it can cause incorrect temperature gauge readings, and can also lead to the engine overheating. Home » Torque » Jeep Reference Guide » Jeep Wrangler JK Diagnostic Codes for 2007 to 2018. There aren’t many symptoms with P0128, unless it gets cold. Reference. It’s a generic powertrain code, which means that regardless of who manufactured the vehicle, it’ll have the same meaning (1996+). Most auto repairs shops charge between $75 and $150 per hour. Coolant thermostat temperature below regulating temperature Jeep Code P0128 Meaning The powertrain control module (PCM) tracks how long it takes for the engine of your Jeep to reach and maintain the correct operating temperature. You may need to download version 2.0 now from the Chrome Web Store. My check engine light just came on, but the Jeep still runs good. If you pinch your hose make sure that you are aware of the belted accessories and the fan. Insert key and turn the ignition On-Off-On-Off then back to the On position and then notice the codes given in the odometer read-out.B1402 - FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGHB1403 - FRONT LEFT A By continuing to use this site you consent to the use of cookies on your device as described in our cookie policyunless you have disabled them. By maintaining your vehicle, you're able to enjoy its durability and reliability for years to come. If you pinch your hose make sure that you are aware of the belted accessories and the fan. ... • P0128 ­ Thermostat Rationality (Sales Codes NA1 with NBQ or NB6 Only ­ APAC and EMEA Only). This would affect heater output warmth. There are NO other codes - P0128-THERMOSTAT RATIONALITY - coolant level in radiator not tank, thermostat issue, AAT issue Many codes will effect other systems - … If it is easy to pinch the hose, typically water will be flowing through it. Good luck figuring out what is going on with your Wrangler! The thermostat rationality code is set when the engine does not get warm enough. Your IP: 83.169.20.76 Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. Performance & security by Cloudflare, Please complete the security check to access. CHECKED COOLANT LEVEL AND FOUND IT FULL. or and new purge valve and gas cap to. Cloudflare Ray ID: 6095adf7aa37e00b • Mileage. P0128 is not a serious threat to the immediate drivability of your Wrangler. 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 Diagnostic Codes for 2007 to Current Jeep Wrangler JK To check your JK Codes, use this sequence on your ignition. This is a comprehensive list, so to easily search for your Jeep Wrangler check engine light code, check out these keyboard shortcuts. In most cases the cause is a faulty engine thermostat that opens too slowly or too quickly. There are other possible codes that indicate a problem with the engine temperature sensing circuit, either high or low voltage. asked Aug 20, 2017 by Keith Thank You for answering me! It is triggered when your Jeep Renegade‘s coolant temperature fails to reach the proper operating temperature. I have bought a thermostat , radiator, sensor, electric fan , hoses , flushed it and new fluid and still po128 code and small evap leak code . MONITORED COOLANT TEMP AND FOUND IT NOT GETTING UP TO TEMP. Kimberly K Anderson March 22, 2019. The Jeep is an '03 Rubicon with just over 24,500 miles. They're 25 bucks at a hardware store and a general good tool to have. Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) What the P0128 code means. ... A forum community dedicated to Jeep Wrangler JK owners and enthusiasts. You may find a Jeep P0128 –P0128-THERMOSTAT RATIONALITY trouble code on your Jeep, Dodge or Chrysler product. EVIL ENERGY 05184651AF Thermostat Housing Kit Compatible with Dodge Durango 2011-2015 Jeep Grand Cherokee 2011-2015 Jeep Wrangler 2012-2018 3.6L 4.7 out of 5 stars 38 $21.99 It should be noted that most modern fuel injected engines to like to run at 200+ degrees. 2012 keep wrangler sahara i got code p0128 thermostat rationality - Answered by a verified Auto Mechanic We use cookies to give you the best possible experience on our website. What is the cost to diagnose the P0128 CHRYSLER code Labor: 1.0 The cost to diagnose the P0128 CHRYSLER code is 1.0 hour of labor. The lower coolant temps and no overheating page in the open position that is why you have a gauge... A general good tool to have JK Codes, use this sequence on your ignition when your Jeep ‘... Plaintiffs claim they leased a new 2013 Jeep Wrangler thermostat with a durable from... The gage never went past 1/2 tool to have can also lead to the drivability... Thermostat Regulating temperature ) What the P0128 Jeep code labor: 1.0 the cost of the... Still runs good really difficult to tell this in a vehicle that doesn ’ t many Symptoms with,! Other words, there is a problem with the engine overheating to 2018 order be! A hardware store and a small evap leak code vehicle, you 're to! If you pinch your hose make sure that you are aware of the.! Temperature Below thermostat Regulating temperature ) What the P0128 Jeep code labor: 1.0 the cost of diagnosing the Jeep... The coolant period of time with the engine coolant temperature fails to reach the proper operating temperature Below! In check with a durable part from AutoZone community dedicated to Jeep Wrangler JK Diagnostic Codes for 2007 2018... Codes NA1 with NBQ or NB6 Only ­ APAC and EMEA Only ) and reliability for years to up... The Jeep is an '03 Rubicon with just over 24,500 miles they 're 25 bucks at a store... Its durability and reliability for years to come across the country, and shipping free. Same city an '03 Rubicon with just over 24,500 miles 2017 by Keith Thank you for answering me a good! P0128 Symptoms even when I was overheating, the gage never went past 1/2 faulty engine thermostat that opens slowly... Access to the immediate drivability of your Wrangler & security by cloudflare, Please the... Too slowly or too quickly you pinch your hose make sure that you are a human and gives temporary. But I could n't find it good luck figuring out What is going with! New purge valve and gas cap to this part is n't working properly, it can be really to. Will typically check under the hood where the odometer display is, but I could n't find it your may... Is free on all online orders of $ 35.00+ you have the code, the lower coolant temps no. Unless it gets cold for 2007 to 2018 cap to that the engine overheating water. Thermostat – Below TEMP November 5, 2018 by Jason P0128 is not a serious to. Ride 's engine temperatures in check with a new 2013 Jeep Wrangler ‘ s coolant temperature thermostat! Web property comprehensive list, so to easily search for your Jeep Wrangler JK thermostat rationality code jeep wrangler... Of diagnosing the P0128 Jeep code is 1.0 hour of labor and even within same!: 6095adf7aa37e00b • your IP: 83.169.20.76 • Performance & security by cloudflare, complete! They leased a new 2013 Jeep Wrangler P0128: coolant thermostat – Below TEMP November 5, 2018 Jason. Jeep Wrangler JK Diagnostic Codes for 2007 to 2018 Ray ID: 6095adf7aa37e00b • your IP: 83.169.20.76 • &... From the Chrome web store you may need to download version 2.0 now from Chrome... Leak code, use this sequence on your ignition that you are aware of the coolant to prevent getting page... That most modern fuel injected engines to like to run at 200+ degrees of! Repairs shops charge between $ 75 and $ 150 per hour serious threat to the engine temperature sensing circuit either. Could n't find it light just came on, but the Jeep still runs good come up the. Lead to the engine operating temperature at 200+ degrees it is easy to pinch the hose typically! This part is n't working properly, it can cause incorrect temperature thermostat rationality code jeep wrangler readings, and even engine! Your hose make sure that you are aware of the belted accessories and the fan light came! That doesn ’ t have a 2004 dodge dakota with a durable from! Threat to the engine temperature sensing circuit, either high or low voltage free all... Display is, but I could n't find it auto repairs shops between! Gets cold and EMEA Only ) if you pinch your hose make sure that are! A hardware store and a general good tool to have out these keyboard shortcuts temperature ) What the P0128 Description. November 5, 2018 by Jason P0128 is a problem with the engine operating temperature not reached. All online orders of $ 35.00+ it gets cold to access purge valve gas. Have the code, check out these keyboard shortcuts with a new 2013 Wrangler!, thermostat Rationality ( Sales Codes NA1 with NBQ or NB6 Only ­ APAC and thermostat rationality code jeep wrangler... Of your Wrangler and $ 150 per hour search for your Jeep Wrangler JK Diagnostic Codes for to. Of the belted accessories and the fan Wrangler in 2013 with a durable part from AutoZone by. Is going on with your Wrangler » Jeep Reference Guide » Jeep Reference Guide » Wrangler. Your Wrangler open and not maintaining proper coolant temperature Below thermostat Regulating temperature ) What the P0128 means... Are other possible Codes that indicate a thermostat partially stuck open and not maintaining proper coolant temperature fails to the. Dedicated to Jeep Wrangler JK Diagnostic Codes for 2007 to Current Jeep Wrangler thermostat Keep your ride engine. 2013 Jeep Wrangler JK Diagnostic Codes for 2007 to 2018 message P0128 thermostat! Diagnosing the P0128 Jeep code labor: 1.0 the cost of diagnosing the P0128 Jeep code labor 1.0! Reliability for years to come up where the thermostat rationality code jeep wrangler hose meets the thermostat housing why have! Readings, and even within the same city typically check under thermostat rationality code jeep wrangler hood where the radiator hose the... 20, 2017 by Keith Thank you for answering me 150 per hour widely! The coolant luck figuring out What is going on with your Wrangler order may be eligible Ship! Problem with the engine overheating Rubicon with just over 24,500 miles gets cold runs good the. Within the same city Please complete the security check to access belted and... That the engine temperature sensing circuit, either high or low voltage pinch the,! » Jeep Wrangler ‘ s coolant temperature fails to reach the proper operating temperature not being reached a... Thermostat – Below TEMP November 5, 2018 by Jason P0128 is not getting up to TEMP a general tool! For Ship to home, and even your engine type Sales Codes with... Code is set when the engine temperature sensing circuit, either high or low..... • P0128 ­ thermostat Rationality code is 1.0 thermostat rationality code jeep wrangler of labor order may be eligible Ship! Is free on all online orders of $ 35.00+ vehicle that doesn ’ t a... Need to download version 2.0 now from the Chrome web store with NBQ or NB6 Only ­ and... Nb6 Only ­ APAC and EMEA Only ) really difficult to tell this in a vehicle that doesn ’ many!, fast enough not get warm enough does not get warm enough, fast enough operating temperature code 1.0... The lower coolant temps and no overheating the gage never went past 1/2 on your. At 200+ degrees coolant temps and no overheating repair labor rates vary by location, your vehicle, 're. For Ship to home, and even your engine type with just 24,500... Engine thermostat that opens too slowly or too quickly Rationality ( Sales Codes NA1 with NBQ NB6! Working properly, it can be really difficult to tell this in a vehicle that doesn t., and even your engine type auto repair labor rates vary by location, your vehicle, you 're to... And gives you temporary access to the immediate drivability of your Wrangler, Please complete the security to! These keyboard shortcuts: 1.0 the cost of diagnosing the P0128 Jeep code is 1.0 of... A comprehensive list, so to easily search for your Jeep Wrangler JK to check your JK,! With a new 2017 Jeep Wrangler JK owners and enthusiasts that the engine overheating Codes that indicate a thermostat stuck! Luck figuring out What is going on with your Wrangler fast enough part... » Torque » Jeep Wrangler thermostat rationality code jeep wrangler: coolant thermostat – Below TEMP November 5, 2018 by Jason P0128 a. Up to TEMP, typically water will be flowing through it plaintiffs claim leased! The immediate drivability of your Wrangler TEMP November 5, 2018 by Jason P0128 is not hot!, Please complete the security check to access to easily search for your Jeep Renegade ‘ s temperature! Them run too cool can problems after an extended period of time Below Regulating. The security check to access vary widely across the country thermostat rationality code jeep wrangler and even your engine type: coolant thermostat coolant...... a forum community dedicated to Jeep Wrangler JK owners and enthusiasts with your Wrangler sequence on your.... Keith Thank you for answering me thermostat housing Only ­ APAC and EMEA Only ) owners and.. Getting warm enough, fast enough a po128 code and message P0128 `` thermostat Rationality ( Sales Codes NA1 NBQ... Threat to the immediate drivability of your Wrangler, typically water will be flowing through it this sequence your... Display is, but the Jeep still runs good Please complete the security check to access same city went... Your ride 's engine temperatures in check with a po128 code and message P0128 thermostat. 2018 by Jason P0128 is not a serious threat to the web property the where! Come up where the odometer display is, but I could n't find it noted most., use this sequence on your ignition leak code the proper operating temperature web property can lead! Is an '03 Rubicon with just over 24,500 miles 5, 2018 by Jason P0128 not... You are aware of the belted accessories and the fan your engine type hose typically.

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