Jeep Check Engine Light Error Codes
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will find the most complete list of Jeep trouble codes available. The code definitions are a good starting point when determining the cause of the service engine light but where do you go from there? We have jeep wrangler error codes a large number of resources to help you repair the problem. Here is how we
Jeep Grand Cherokee Engine Codes
suggest you proceed. Look up your code definition. This tells you where to start testing. If you are unsure of any abbreviations,
Jeep Liberty Codes
check out the acronym list by clicking on the link at the left. Next, read our article Automotive Circuit Testing 101, and if there is an article related to the system you are testing, such as Oxygen
Jeep Grand Cherokee Check Engine Light
Sensors or EGR concerns, read these as well. They will provide valuable info! If there is a link to a specific diagnosis strategy for the code then follow that and start testing. If there is no procedure for your manufacturer specific code, then I suggest referring to a similar generic OBD II code (these are listed numerically by system type) to get a good idea of what to look for. If at this jeep cherokee codes point you still need assistance use the "Get Help" link and let us know how we can help. We can provide information on component location, specifications, circuit color/location and more. We do ask that you please read the info available on the site first so that we can help reduce repeat questions. So please read our Disclaimer and when you're ready jump in! Also we value your feedback and like to hear stories of unusual fixes or concerns you may have run into with your Check Engine Light, so feel free to share your experiences by using the "Contact Us" link. Let's go! We do our best to update these Jeep check engine light codes as frequently as possible. If you find one missing let us know and we we'll add it immediately! Please use the form on our Contact Page to get in touch with us. We certainly understand how frustrating it can be to look for a code definition and have it not online when you need it. And lets face it, if the service engine light is on then you need it now! It's easiest to use the "Find On This Page" feature of your browser's "Edit" menu to find codes on this page as the list is quite long. These are listed in numerical
use today. OBD is an electronic system designed to control engine functions and diagnose engine problems or component failures, as well as minimize emissions. OBD-II, a new standard jeep wrangler check engine codes introduced in cars built after January 1, 1996, provides almost complete engine control jeep cherokee check engine light and also monitors parts of the chassis, body and accessory components, as well as the diagnostic control network of jeep obd1 codes the vehicle. OBD-II equipped vehicles have a connector located in the passenger compartment, usually accessible from the driver's seat (under the dash above the hood release lever in the Grand Cherokee https://www.engine-light-help.com/jeep-check-engine-light.html WJ). A cable is plugged into the OBD-II connector and connected to a scanning tool. This can range from a simple hand-held meter that provides a coded read-out of the various diagnostic functions, up to a large console computer-based unit costing thousands of dollars. Fault codes usually appear after the "Check Engine" light has come on. The data provided by the OBD-II system http://www.wjjeeps.com/faultcodes.htm can sometimes pinpoint the specific component that has malfunctioned, saving substantial service time and cost. Scanning OBD-II signals can also provide important information when purchasing a used vehicle. Recent introductions of less costly scanning devices have allowed home mechanics and small shops accessibility to OBD-II signals to use them for their own testing and repairs. Malfunction Indicator Lamp (MIL) In the Grand Cherokee WJ, the MIL gives an indication to the vehicle operator when the Powertrain Control Module (PCM) has recorded a Diagnostic Trouble Code (DTC) for an On-Board Diagnostics II (OBDII) emissions-related circuit or component malfunction. The MIL is controlled by a transistor on the instrument cluster circuit board based upon cluster programming and electronic messages received by the cluster from the PCM over the Programmable Communications Interface (PCI) data bus. The MIL bulb is completely controlled by the instrument cluster logic circuit, and that logic will only allow this indicator to operate when the instrument cluster receives a battery current input on the fused ignition switch output (run-start) circuit. Therefore, the bulb will always be off when the ignition switch is in any position except
Write-Ups, Troubleshooting 114
Thanks to the advent of technology, just about every single part on your new Jeep JK Wrangler is wired up to a computer. And, if anything goes wrong with any one of these parts, your Jeep's computer will make a note of it and/or even let you know about http://project-jk.com/jeep-jk-write-ups/jeep-jk-wrangler-diagnostic-trouble-codes-dtc-how-to-check-them-what-they-mean/comment-page-3 it by illuminating a Malfunction Indicator Light (MIL for short or ‘check engine' light) or icons on your dash. Unfortunately, the MIL or other icons won't tell you a whole lot other than the fact that your Jeep is having some kind of a problem https://www.reference.com/vehicles/way-clear-check-engine-light-jeep-cherokee-6399b917460d6d3e and unless you take your Jeep into the dealership or have a OBDII reader handy, you're pretty much out of luck, right? Wrong. As luck would have it, the JK Wrangler's come with a Diagnostic Trouble Code (DTC) reader built right into the dash check engine and you can access them by following the 3 simple steps below. Once you have the DTC code(s) in hand, check it/them against the list below and you will be able to find out exactly what problems your Jeep is having. How to Read a DTC A DTC or Diagnostic Trouble Code is made up of 5 digits the first of which is one of the following letters: B - Body C - Chasis P - Power Train U - Network The 2nd digit indicates: 0 - SAE check engine light 1 - MFG The 3rd digit indicates: 1 - Fuel & Air Metering 2 - Fuel & Air Metering (Injector Circuit) 3 - Injection Systems or Misfire 4 - Auxillary Emissions Control 5 - Vehicle Speed Control & Idle Control System 6 - Computer Output Circuit 7 - Transmission 8 - Transmission The last 2 digits indicate: Fault (00-99) Instructions 1. To check your Jeep JK Wrangler's DTC codes, simply insert your key into the ignition, turn it to the ‘ON' position but do not start the engine. Then, push the key into the ignition cylinder and while holding it in, turn it to the ‘OFF' position and then back to the ‘ON' position (3) times straight making sure to end with it in the ‘ON' position. It is important to keep pushing in on the key to prevent it from catching at the different positions along the way. 2. If you do step #1 correctly, all your dash lights will illuminate and your odometer will show up as a series of (6) dashes as shown in the pic to the left. If your Jeep JK Wrangler has any logged in any DTC's, they will be displayed soon after the dashes appear. Write down the DTC(s) and check it/them against the list below to find out what they mean. 3. If your Jeep JK Wrangler has not logged in any DTC's, the dashes on your odometer will be followed by the message ‘-done-‘. Turn your key to the ‘OFF' position and you will in fact be done. Click here to see wCelebrations Home & Garden Math Pets & Animals Science Sports & Active Lifestyle Technology Vehicles World View www.reference.com Vehicles Car Parts & Maintenance Q: What is the way to clear the check engine light on a Jeep Cherokee? A: Quick Answer The light can be cleared by fixing the original malfunction, disconnecting the battery, or resetting the on-board diagnostic, or OBD, system with a scanner. It is important to ascertain the cause of the light before clearing it. Continue Reading Keep Learning What does it mean when my Hyundai's "check engine" light comes on? What does it mean when your car has the "check gauges" light on? How do you turn off a malfunction indicator light? Full Answer A check engine light could indicate a catastrophic problem in the Jeep’s engine, or it may be something as simple as a loose gas cap. The cause should be determined before resetting the light, to avoid potential damage to the vehicle. One option is to take the Jeep to a professional mechanic, who will not only clear the check engine light, but also diagnose and repair the cause of the error.A home mechanic can clear the code with an OBD scanner. Available at any auto supply store, an OBD scanner plugs into the OBD port on the vehicle and reads any error codes the engine has detected. In Jeep Grand Cherokees, the port is usually found under the steering wheel, near the driver’s side door. After reading the code and diagnosing and fixing the problem, the user can select an option on the scanner to clear all diagnostic codes, which should reset the check engine light.A "hard reset" is another option. This involves disconnecting the battery and draining all power from the car’s electrical system by running the lights. This deprives the OBD system of current, erasing its memory. However, if the original issue has not been addressed, the check engine light will simply turn on again soon after power is restored. Learn more about Car Parts & Maintenance Sources: carcarekiosk.com howstuffworks.com Related Questions Q: How do you program a Jeep Grand Cherokee keyless entry? A: To program a keyless entry system for a Jeep Grand Cherokee, special equipment must be connected to the automobile for programming purposes. Therefore, pro... Full Answer > Filed Under: Ca