2018 (JL) Jeep Wrangler NOTE: This bulletin applies to vehicles within the following markets/countries: North America, APAC, EMEA and LATAM. 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. It is triggered when your Jeep Wrangler‘s coolant temperature fails to reach the proper operating temperature. Search For Your Wrangler DTC Code. It’s a generic powertrain code, which means that regardless of who manufactured the vehicle, it’ll have the same meaning (1996+). If your ride starts to overheat, immediately replace the Jeep Wrangler thermostat with a durable part from AutoZone. 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. CHECKED COOLANT LEVEL AND FOUND IT FULL. I have 2012 jeep JK wrangler sport. 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 Windows Machine: Use Ctrl + F (Control + F) to type in your Wrangler DTC code and find it in the table. 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. P0128 is a relatively common OBDII trouble code. I thought I read something about getting a code to come up where the odometer display is, but I couldn't find it. ... A forum community dedicated to Jeep Wrangler JK owners and enthusiasts. If you pinch your hose make sure that you are aware of the belted accessories and the fan. The P0128 code means that the engine coolant is not getting warm enough, fast enough. There aren’t many symptoms with P0128, unless it gets cold. 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. In most cases the cause is a faulty engine thermostat that opens too slowly or too quickly. 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 102,453. Cost of diagnosing the P0128 JEEP code Labor: 1.0 The cost of diagnosing the P0128 JEEP code is 1.0 hour of labor. 2015 Jeep Wrangler. Any connection or thoughts? They're 25 bucks at a hardware store and a general good tool to have. 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. 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. • Order Thermostats for your 2011 Jeep Wrangler and pick it up in store—make your purchase, find a store near you, and get directions. 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 Reference. 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 MONITORED COOLANT TEMP AND FOUND IT NOT GETTING UP TO TEMP. The Jeep is an '03 Rubicon with just over 24,500 miles. 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. Jeep Wrangler JK Diagnostic Code List | 2007-2018. The plaintiffs claim they leased a new 2013 Jeep Wrangler in 2013. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. It is triggered when your Jeep Wrangler ‘s coolant temperature fails to reach the proper operating temperature. If you have a code P0128, thermostat rationality, that would indicate a thermostat partially stuck open and not maintaining proper coolant temperature. The auto repair labor rates vary widely across the country, and even within the same city. By maintaining your vehicle, you're able to enjoy its durability and reliability for years to come. RECOMMEND NEW THERMOSTAT ASSEMBLY. Letting them run too cool can problems after an extended period of time. If it is easy to pinch the hose, typically water will be flowing through it. Check here for special coupons and promotions. Even when I was overheating, the gage never went past 1/2. 2018 Jeep Wrangler « Back to Wrangler TSBs ... P0128 - Thermostat Rationality(Sales Codes NA1 with NBQ or NB6 Only - APAC and EMEA Only). 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. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. P0128 JEEP Description An Engine Coolant Temperature (ECT) sensor monitors the temperature of the coolant. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. August 20, 2018. 2017 Jeep Wrangler Thermostat Keep your ride's engine temperatures in check with a new 2017 Jeep Wrangler thermostat. Brandon Libby. It should be noted that most modern fuel injected engines to like to run at 200+ degrees. Your Jeep Wrangler simply cannot be stopped. ... • P0128 ­ Thermostat Rationality (Sales Codes NA1 with NBQ or NB6 Only ­ APAC and EMEA Only). Diagnostic Codes for 2007 to Current Jeep Wrangler JK To check your JK Codes, use this sequence on your ignition. Jeep Wrangler JK Diagnostic Codes for 2007 to 2018. P0128 code definition. This is a comprehensive list, so to easily search for your Jeep Wrangler check engine light code, check out these keyboard shortcuts. Mileage. Renegade P0128 Symptoms It can be really difficult to tell this in a vehicle that doesn’t have a temperature gauge. It’s a generic powertrain code, which means that regardless of who manufactured the vehicle, it’ll have the same meaning (1996+). 4/3/2020. asked Aug 20, 2017 by Keith Thank You for answering me! August 27, 2015 ; ... P0128 - Thermostat Rationality P0129 - Barometric Pressure Out-Of-Range Low P0131 - O2 Sensor 1/1 Circuit Low P0132 - O2 Sensor 1/1 Circuit High Coolant temperature is between 179- 186 degrees. Engine Code - P0128 (Thermostat Rationality) Thought I'd find out why my check engine light is on and it said it's Thermostat Rationality. Thermostat Part Numbers: 52028898A$ 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. 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. Jeep Wrangler P0128: Coolant Thermostat – Below Temp November 5, 2018 by Jason P0128 is a relatively common OBDII trouble code. In other words, there is a problem with the engine operating temperature not being reached within a certain amount of time. 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. P0128is a relatively common OBDII trouble code. Service Date. ... P0111 - Intake Air Temperature Sensor Rationality P0112 - Intake Air Temperature Sensor Circuit Low ... P0128 - Thermostat Rationality P0129 - Barometric Pressure Out-Of-Range Low P0131 - … Please enable Cookies and reload the page. Most auto repairs shops charge between $75 and $150 per hour. There are NO other codes - P0128-THERMOSTAT RATIONALITY - coolant level in radiator not tank, thermostat issue, AAT issue Many codes will effect other systems - … How to repair P0128 Jeep code Thermostat Rationality. My check engine light just came on, but the Jeep still runs good. You may find a Jeep P0128 –P0128-THERMOSTAT RATIONALITY trouble code on your Jeep, Dodge or Chrysler product. Performance & security by Cloudflare, Please complete the security check to access. 2013JKU error code and message P0128 "Thermostat Rationality". Trouble code PO128. 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. When this part isn't working properly, it can cause incorrect temperature gauge readings, and can also lead to the engine overheating. Symptoms- CEL Possible causes - Insufficient warm up time - Low engine coolant level - Leaking or stuck open thermostat - Faulty MAP sensor P0128 is not a serious threat to the immediate drivability of your Wrangler. Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) What the P0128 code means. Rationality ( Sales Codes NA1 with NBQ or NB6 Only ­ APAC EMEA... What is going on with your Wrangler operating temperature not being reached a... Across the country, and shipping is free on all online orders $! Are a human and gives you temporary access to the web property is 1.0 of... Below TEMP November 5, 2018 by Jason P0128 is not blowing hot, just like-warm,. Just like-warm 2017 by Keith Thank you for answering me dakota with po128. A 2004 dodge dakota with a po128 code and message P0128 `` thermostat Rationality code set! Access to the thermostat rationality code jeep wrangler drivability of your Wrangler cost of diagnosing the P0128 means. 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