Replace it every 4 years. 2009 Jeep Liberty Sport 3.7L V6. See all videos for the 2009 Jeep Liberty. This free video provides the steps to diagnose and clear a check engine light on a 2009 Jeep Liberty Limited 3.7L V6. The video also provides steps on how to read the 2009 Jeep Liberty Limited 3.7L V6 trouble code.S. spamloverman Discussion starter. 51 posts · Joined 2006. #1 · Apr 13, 2006. When I engage the right turn signal, it blinks about 3-5 times per second. It happened a couple of times in the winter but it's nice and warm here now. The hazards perform as expected, as does the left turn signal. Could it be a fuse ready to blow, or another one ...A subreddit for the Jeep Liberty/Cheerokee. From the 2002 KJ, all the way to the 2012 KK. ... ADMIN MOD 2003 Jeep Liberty 3.7 v6, check engine light blinking before starting engine? Share Sort by: Best. Open comment sort options. Best. Top. New. Controversial. Old. Q&A. Add a Comment. Fastfood9000 • I am not completely sure I will go check if ...A flashing Check Engine Light typically indicates a serious issue with your Liberty and should not be ignored. It usually indicates a catastrophic misfire that can dump raw fuel into the exhaust system, which can damage …Cause 2: A faulty fuel injector. Bad fuel injectors are another very common engine problem that can cause engine shaking and a check engine light. Modern engines use a technique known as direct injection to get the fuel into the engine cylinder. A very precise amount of fuel is delivered by the fuel injectors controlled by the ECU.Will now have to take to another shop to have it checked since the dealership has failed 3 times to fix. - William R. , Stout, OH, US. Maximize. The 2012 Jeep Liberty has 6 problems reported for ...I came back from a 3 month deployment to a jeep that wouldnt start, had lights all over the place, and a dead optima yellow top battery. I too assumed it was the security system as the red light was on. Had a guy come out and make me a new key. Still wouldnt start. Ordered a new PCM and it fired right up like nothing ever happened.West Tennessee. Mar 12, 2019. #1. I have a 2002 TJ Sport that I've had for about 5,000 miles and it's been running rougher since I got it. Odometer currently reads 133,000. I have a misfire in cylinder one only and at times it's rougher than other times. From what I read, the flashing cel indicates that raw fuel is being burnt in the cat ...Having a problem with Jeep and wondered if you could give it some thought: 6AM Monday when i went to start my 2003 Grand Cherokee 4.7 the Sentry Key Immobiliser System Indicator light came on and car would not start. ... AA cleared all fault codes (OD26; 0210,0311,0811) most refer to communication with engine control. Today my local garage ...Problem Description. An engine misfire at idle ( rough idle ), accompanied by illumination or flashing of the check engine light, could indicate a problem with one or more of the intake valves. Revised intake valves & valve locks are available to address this concern. 623 people reported this problem. 160 comments.1. Loose Battery Terminal (Likely) A loose battery terminal can cause your Jeep Liberty to have flickering dash lights and a no start condition. If a terminal is loose, the electrical connection to the vehicle is bad, and the dash lights can flicker without it starting. It’s easy to tell if the battery terminals aren’t tight.902. Feb 14, 2024. Boudreaux & Missy. B. S. 2006 Jeep Liberty flashing engine light and driving like crap till you gun the engine the drives fine for a bit and light stops. swartz2448. May 22, 2022. KJ General Discussion.05 jeep liberty with a 3.7l engine, customer complaint is a flashing check engine light, rough running. p0300 multiple cylinder misfire trouble code stored ...Insert the key into the ignition. Turn the key to the "ON" position. Press and hold the "SET" button. The button is directly below the steering column. Release the "SET" button when the tire indicator light turns off. Turn the ignition to the "OFF" position. chris4x4, Nov 29, 2019. #2. Dec 1, 2019 at 1:47 PM.TPMS Flashing but pressure not low. Lately I started with my driver front tire showing the low pressure warning and flashing on the cluster. I filled that tire and it went away. After that now both driver side tires have the pressure flashing but they are not low. All 4 tires vary maximum 1 PSI and the two driver side tires are not low at all.The Check Engine Light comes on whenever the systems send out an abnormal reading. For that reason, many issues cause the warning. However, the most common causes are a loose gas cap, a bad EGR valve, a bad MAF sensor, a bad oxygen sensor, a worn-out catalytic converter or a bad ignition coil. 1.March 27, 2023 by Jason. The check engine light indicates that you need to service a vehicle soon. If your Jeep Wrangler has a flashing check engine light means that there is a catalyst damaging misfire (it can damage the catalytic converter and O2 sensors). If your vehicle has a flashing check engine light, it means you need to …Clogged oil filter: This filter can restrict oil flow, leading to a drop in oil pressure. This can cause the light to flicker as the pressure fluctuates. Worn-out oil pump: The pump circulates oil throughout the engine to ensure proper lubrication. If the pump becomes worn or damaged, it may fail to maintain adequate oil pressure, resulting in oil light flickering.Will now have to take to another shop to have it checked since the dealership has failed 3 times to fix. - William R. , Stout, OH, US. Maximize. The 2012 Jeep Liberty has 6 problems reported for ...2007 Jeep Wrangler Sahara 2dr. On December 1st 2010, the ESP/BAS TCS light came on and stayed on for a week after I made a left turn on loose gravel. I did the key turn thing to get the diagnostics codes, all that displayed was P2504 - Charging System Output High, still do not know that that "really means".Once the light goes on steady it. I have a Jeep Liberty 2003. The engine light came, blinking and jerking, no power. Once the light goes on steady it rides smooth, less power. brought to a dealer and the changed all coils. Ran fine for three days, and light went back on.There are a few different reasons why this might happen, and we'll go over some of the most common causes. The most common cause of both the check engine light and traction control light coming on is problems related to a faulty traction control system and its malfunction due to road conditions. Faulty wheel speed sensors or even low tire ...Jeep Flashing Dash Cluster -- FIXED!! I have been the victim of the random flashing dash lights issue. It happened in my 2012 and my 2013. The Jeep will also not start randomly. I also know the web is full of people with the same issue (even in other Jeep vehicles). The dealership knows nothing, and was blaming my CB and LED headlights.As mentioned above, the ECM controls the engine timing, and air/fuel ratio. So, when it goes bad, it can knock your Liberty's air fuel ratio off. This could lead to poor fuel economy, the previously mentioned rough running engine, backfiring, a flashing check engine light, and an engine that has no giddy-up and go. 4.May 31, 2010 · 18 posts · Joined 2009. #1 · May 31, 2010. Hi, I own a 2007 2.8 L Liberty, and I my ETC ligth is flashing, and it wont stop. The car is running fine, and it has no power issues that i know. I think it started after driving through water, and i tried to dry the brakes while i was accelerating.So, let's dive into the world of check engine light triggers specific to the Jeep Liberty and explore the impact they can have on your beloved vehicle. Various Reasons for Check Engine Light Illumination. One of the most prevalent causes of the check engine light coming on in a Jeep Liberty is a loose or faulty gas cap. Yes, something as ...Jan 29, 2024 · When your Jeep’s check engine light blinks persistently, it signals that cylinders are misfiring and unable to burn fuel properly. This alarming indicator means it’s time to diagnose issues ranging from worn spark plugs, damaged fuel injectors, intake leaks, a weak battery, bad sensor components, valve cover sealing failures, and more ...1 Answer. I have a 2003 jeep liberty with a flashing check engine light. I ran the codes and it is saying P 300,301,302,303,304,306. We have replaced all spark plugs and all six coil packs. We also had the codes reset and the light came back on. We did find a small leak in the radiator and the air conditioner is going out.Nov 21, 2013 · 1 post · Joined 2013. #1 · Nov 21, 2013. Hi everyone, I am brand new to the group - I have a 2006 Jeep Liberty Sport, (only owner) Recently - the engine light came on as well as the ABS, Traction, and ESB lights. I took to Advanced Auto and they told me it was a misfire, and speed control sensor. (also, possibly need new wheel bearings).Many cars will burn or leak a little bit of oil. Over time, this adds up and you might need to add some - learn how to here! This free video provides the steps to diagnose and clear a check engine light on a 2005 Jeep Liberty Renegade 3.7L V6. The video also provides steps on how to read the 2005 Jeep Liberty Renegade 3.7L V6 trouble code.Here are the most common symptoms of P0301 in the Jeep Liberty. The P0301 trouble code will trigger your Liberty's check engine light. The vehicle itself may begin to run rough. It depends on how serious the misfire is. The vehicle may produce excess vibration, especially at lower RPM. Fuel mileage may suffer.Jun 29, 2021 · Follows these steps to reset the red lightning bolt light: Turn the ignition key to the “on” position but do not start the car. Press the gas pedal to the floor and slowly return it to the resting position. Turn the ignition fully on and start the car. Depress the gas pedal again to see if the engine responds well and the warning light ...359 posts · Joined 2006. #1 · Apr 2, 2013. My wife was on her way to work today when the check engine light started flashing. Soon after the engine started running rough. Checked the codes and nothing. It's a 2002 with a 2.5 and an auto trans. I recently replaced the cylinder head, exhaust manifold and the radiator.Delaware. My 2004 Liberty has had the Part time dash light on since I switched it into 4wd during the last snow storm. The same day I switched it back to 2wd drive but the part time light is still on. I was wondering if this would affect gas mileage at all, since the Jeep is not technically driving in 4wd, only the light is on.My 2003 jeep liberty has a flashing check engine light and - Answered by a verified Jeep Mechanic. ... 2007 jeep liberty 3.7 flashing engine light no codes car had no power clogged up cat then after install .road test engine light flashes and no codes no misfires any ideas ...359 posts · Joined 2006. #1 · Apr 2, 2013. My wife was on her way to work today when the check engine light started flashing. Soon after the engine started running rough. Checked the codes and nothing. It's a 2002 with a 2.5 and an auto trans. I recently replaced the cylinder head, exhaust manifold and the radiator.Check engine light started flashing this morning, Blinks, 03 liberty, my codes show P0300 P0301 and P0306, the only - Answered by a verified Jeep Mechanic. ... I have a Jeep Liberty 2003. The engine light came, blinking and jerking, no power. Once the light goes on steady it rides smooth, less power. brought to a dealer and the changed all ...1 Answer. I have a 2003 jeep liberty with a flashing check engine light. I ran the codes and it is saying P 300,301,302,303,304,306. We have replaced all spark plugs and all six coil packs. We also had the codes reset and the light came back on. We did find a small leak in the radiator and the air conditioner is going out.Engine Missing And Check Light Flashes Jeep Kj Kk Liberty Forum. Jeep Liberty 3 7 4 Check Engine Light Flashing Possible Causes You. Jeep Liberty Q A Evap System Engine And Exhaust Diagrams. I Have A 2003 Jeep Liberty There Is An Engine Looking Light On My Dashboard 3rd Down The Right Side Of. Jeep Liberty Q A Evap System Engine And Exhaust ...M. maximusAF Discussion starter. 123 posts · Joined 2012. #1 · Mar 8, 2017. 2008 JK with almost 195K. Has been almost perfect since I bought it new. CEL began flashing and dinging at me. I could tell it was losing power, so pulled over and had it towed to a shop. Playing the waiting game now.Mar 8, 2017 · M. maximusAF Discussion starter. 123 posts · Joined 2012. #1 · Mar 8, 2017. 2008 JK with almost 195K. Has been almost perfect since I bought it new. CEL began flashing and dinging at me. I could tell it was losing power, so pulled over and had it towed to a shop. Playing the waiting game now.520 posts · Joined 2014. #2 · Apr 24, 2017. A blinking check engine light means stop and shut you're engine off asap or major damage will occur. An engine misfire will damage the catalytic converter very quickly due to unburned fuel burning in the converter causing excessively high temperatures and a meltdown. Sent from my iPad using Tapatalk.Apr 23, 2009 · My 2004 Jeep Liberty has 213K miles and other than replacing normal wear items has been extremely reliable. On routine start the engine started missing as if only 2-3 cylinders were firing and the check engine light started flashing. Running too poorly to drive so I called a wrecker for towing to garage. Mechanic said scanner showed multiple ...To use remote start on a Jeep Cherokee, press and release the remote start button on the transmitter two times within five seconds. The vehicle’s doors lock, the parking lights fla...5914 posts · Joined 2012. #4 · Jun 18, 2012. from the 2007 Liberty Owner Manual: Malfunction Indicator Light. This light is part of an onboard diagnostic system. called OBD II which monitors engine and automatic. transmission control systems. This light. will illuminate when the ignition is in the ON position.2010 Liberty Flashing Oil Light HELP!!! I recently purchased a Liberty and have done some basic maintenance. I did an oil change using full synthetic 5w-20 replaced the oil filter (Fram) air filter (stp) and changed out the spark plugs (NGK) But ever since the oil change after I drive around for a bit and come to a stoplight/stop sign anytime ...38 posts · Joined 2007. #1 · Dec 16, 2010. Working on a 2002 Liberty, she will crank but will no fire! 3.7 V6 Auto 4wd. Fuel presure is good. Compresion is good. New crank and cam sensor. Enigne light flashes about ten time then stays on with key on. No code disply at odometer after key on, off, on, off, on.The reasons why the anti theft light is blinking when car is off are: 1. It is Built to Blink When Car is Off. One of the many reasons why car anti theft light is blinking when car is off is because it is built or designed to blink when car is off. Especially when no one is inside the car and the doors are locked from outside.Aug 19, 2017. Messages. 20. Reaction score. 0. Location. NY. I have a 2003 Jeep liberty and it has been running grate but today I was pulling in my driveway after driving adout 30 miles and my oil light came on! As soon as it came on I shut it off!Your Jeep Liberty's dashboard is equipped with several warning lights that indicate different problems or malfunctions in your vehicle's systems. Here's what each light means: Check Engine Light: This light indicates that there is an issue with your vehicle's engine system, such as a malfunctioning sensor or a problem in the exhaust ...There are many potential causes for a flashing check engine light, but some of the most common include: A problem with the spark plugs or wires; A vacuum leak; A faulty oxygen sensor; A misfire in the engine; A problem with the catalytic converter; If you see your check engine light blinking, don't panic.When your Jeep’s check engine light blinks persistently, it signals that cylinders are misfiring and unable to burn fuel properly. This alarming indicator means it’s time to diagnose issues ranging from worn spark plugs, damaged fuel injectors, intake leaks, a weak battery, bad sensor components, valve cover sealing failures, and more ...If your Jeep Liberty has a tire pressure warning light, it can only be caused by a few things. Once you very that your vehicle has the proper tire pressure, the TPMS is not a safety concern or breakdown risk. The most common reasons the TPMS light won't go out are over or under-inflated tires or a tire pressure sensor-related issue.S. spamloverman Discussion starter. 51 posts · Joined 2006. #1 · Apr 13, 2006. When I engage the right turn signal, it blinks about 3-5 times per second. It happened a couple of times in the winter but it's nice and warm here now. The hazards perform as expected, as does the left turn signal. Could it be a fuse ready to blow, or another one ...Oct 11, 2015 · Check to see if it might have thrown a code. 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 ...Impressive lineup of Easter Jeep Safari concepts from Jeep® heading to Moab, Utah, April 1-9Seven one-of-a-kind Jeep concept vehicles take four-wh... AUBURN HILLS, Mich., March 30,...2007 jeep liberty 3.7 flashing engine light no codes car had no power clogged up cat then after install .road test - Answered by a verified Jeep Mechanic. ... I have a Jeep Liberty 2003. The engine light came, blinking and jerking, no power. Once the light goes on steady it rides smooth, less power. brought to a dealer and the changed all coilsAs mentioned above, the ECM controls the engine timing, and air/fuel ratio. So, when it goes bad, it can knock your Liberty's air fuel ratio off. This could lead to poor fuel economy, the previously mentioned rough running engine, backfiring, a flashing check engine light, and an engine that has no giddy-up and go. 4.324 posts · Joined 2011. #1 · Aug 14, 2012. ESC light on and ETC light flashing. RPMs drop, engine runs rough w/ no power. I have a 2011, and has done this to me 3 times since Sunday. I drove a two and a half hour trip (both ways) on Saturday with no problems. Went wheeling on Sunday and as I was turning off the pavement down a slope to the ...Emergency BRAKE Light flashing, loud audio alerts, and my 2022 Jeep trying to stop while driving on the highway!!! Sooo scary! Today I was driving home from work on the highway and in heavy traffic, when suddenly a big red BRAKE! sign came across the dash, and there were several loud audio alerts over the speakers.My 2006 Liberty (V6/Auto/35k miles) Malfunction Indicator Light (aka check engine light) has been steadily on for ~24 hrs. According to the owner's manual, it's not serious until the light begins blinking, then, they say, have the dealer check it very soon.Help keep your car as responsive as you are by maintaining proper power steering fluid levels. This free video provides the steps to diagnose and clear a check engine light on a 2002 Jeep Liberty Limited 3.7L V6. The video also provides steps on how to read the …DaveJM on November 10, 2021. Hello, as hard as it may be to believe, flushing your cooling system or heater core has absolutely no bearing on the check engine light flashing. The check engine light flashing is due to an engine performance concern that causes cylinder misfire of the engine. Where are the engine cylinders do not fire as expected.Replace the coil again. I had this exact same thing happen to me, flashing check engine light, multiple cylinder misfire. I replaced all the coils in mine when this happened, along with the spark plugs and crank-sensor. A little while later, exact same problem. I removed the offending coil (#3, if I recall), and replaced it.Short video on how to reset / clear / delete change engine oil light indicator on second generation of Jeep Liberty. Resetting the oil change message is very...The feature of Lao P.D.R. Lao P.D.R. is located in the center of Indochina, sharing borders with China, Myanmar, Thailand, Cambodia and Vietnam ...Problem Description. An engine misfire at idle ( rough idle ), accompanied by illumination or flashing of the check engine light, could indicate a problem with one or more of the intake valves. Revised intake valves & valve locks are available to address this concern. 623 people reported this problem. 160 comments.10. Reaction score. 3. Location. Huntersville, NC. Ok, our 2007 Liberty suddenly started running rough, misfiring when cold. After driving for 5 minutes or so it runs normally. The check engine light is on mostly steady, but flashed a few times. Also we got the "rotten egg" smell from the catalytic converter while it was running rough.Top Answer. The only way to reset the "check engine" light in a Jeep Liberty is to use an OBDII scanner or correct the error that caused it. Check for a loose gas cap. When tightened, the light will go off. Drive the car for at …Properly inflated tires is the easiest way to improve fuel economy. The right tire pressure is NOT on the side of your tire btw. This free video provides the steps to diagnose and clear a check engine light on a 2003 Jeep Liberty Sport 3.7L V6. The video also provides steps on how to read the 2003 Jeep Liberty Sport 3.7L V6 trouble code.06 jeep liberty engine light flashing. 2006 Jeep Liberty. Asked by Visitor in Newark, NJ on . September 16, 2020. I just changed the 02 sensor on jeep 06 liberty its putting and engine light keeps flashing off and on its not picking up any speed . How long have you had this problem? Just started. Tags: jeep, liberty.Jan 29, 2024 · When your Jeep’s check engine light blinks persistently, it signals that cylinders are misfiring and unable to burn fuel properly. This alarming indicator means it’s time to diagnose issues ranging from worn spark plugs, damaged fuel injectors, intake leaks, a weak battery, bad sensor components, valve cover sealing failures, and more ...6 Jan 2013 ... How to read engine codes directly from the dashboard of a 2003 Jeep Liberty. Created on January 6, 2013 using FlipShare.Help keep your car as responsive as you are by maintaining proper power steering fluid levels. This free video provides the steps to diagnose and clear a check engine light on a 2002 Jeep Liberty Limited 3.7L V6. The video also provides steps on how to read the 2002 Jeep Liberty Limited 3.7L V6 trouble code.Jan 18, 2011 · 2005JGC. 2813 posts · Joined 2010. #3 · Jan 18, 2011. Yeah a flashing mil either indicates that your monitors have not run yet (key on engine off for like 10 seconds it will flash for another couple seconds)... OR that you are doing or capable of doing serious damage to your catalyitic converter (misfire). Pull the code and that will ...359 posts · Joined 2006. #1 · Apr 2, 2013. My wife was on her way to work today when the check engine light started flashing. Soon after the engine started running rough. Checked the codes and nothing. It's a 2002 with a 2.5 and an auto trans. I recently replaced the cylinder head, exhaust manifold and the radiator.Step 1: Retrieve The Diagnostic Trouble Codes (Dtcs) Step 2: Inspecting And Addressing Common Issues. Checking And Cleaning The Spark Plugs. Inspecting Ignition Coils And Replacing If Necessary. Examining The Oxygen Sensor And Replacing If Faulty. Step 3: Addressing Fuel System Problems. Cleaning Or Replacing Fuel Injectors:My 2004 Jeep Liberty has 213K miles and other than replacing normal wear items has been extremely reliable. On routine start the engine started missing as if only 2-3 cylinders were firing and the check engine light started flashing. Running too poorly to drive so I called a wrecker for towing to garage. Mechanic said scanner showed multiple ...Jeep Liberty - KJ (02 to 07) KJ General Discussion . Trouble Starting When Warm ... Does anyone know what a flashing check engine light means? Feb 4, 2014 #14 Luke Interloper. Joined Oct 21, 2008 Messages 4,088 Reaction score 522 Location Bancroft, Canada. frontrangecctv said: Is there a way to pull codes if the light is off?Fair Repair Range. $167 - $241. Includes parts & labor for ZIP 23917. Dealer. $205 - $241. "Dealer" refers to service centers that specialize in one or two makes and sell those vehicles. As a ...Apr 9, 2017 · The gas cap light is an indication of a EVAP slow leak. The gas cap is one of the more common fixes to try first. Should try an replace the gas cap with a new one, and have the code cleared. If this comes back on then a EVAP system smoke test is done to find the slow leak. 16 people found this helpful.The passenger side turnsignal flasher inside on the dash is continually glowing green. When I turn the passenger turn signal on it works but also the headlight flashes with it from its already dim state to dimmer in sync with the turn signal. The rear lights work fine. I have put in new flashers in the fuse panel and replaced both headlights ...DaveJM on July 26, 2017. A flashing check engine light indicates the presence of an engine misfire. An engine misfire will cause the engine to run more rough than usual and lack the power that you are accustomed to. Engine misfires are often caused by ignition system problems like a faulty coil or spark plug...or more than one.Well my Jeep Wrangler dash is lit up like a Christmas tree again. Today I am fixing the electronic throttle control warning light (red lightning bolt symbol)...There are several areas of the vehicle's powertrain systems that will cause the service light or check engine light to come on. You will want to have the code (s) read to know what area may have caused this. Of course, you should check that your gas cap is tight, as that will cause the light to come on, (evap leak) Normally Autozone will read ...229 posts · Joined 2009. #1 · Sep 7, 2012. K, so yesterday my jeep wouldn't start. It came up with a red lightning bolt light on the dash and a check engine light as well. It ran perfectly the day before. Got a jump off another car cause I thought the battery was dead.2006 jeep liberty was bucking / shaking esp light started flashing and so did check engine light. pulled over. turned - Answered by a verified Jeep Mechanic. ... 2006 Jeep Liberty, the warning lights are briefly flashing on …Dec 28, 2022 · How to Reset Jeep Check Engine Light. The first step in the troubleshootin, Jeep Liberty 2010 just over 100K ... the flashing CEL also has ne thinking fuel. ... Then the engine light, Jeep Liberty 3.7L Heated Oxygen Sensor Faults - P0031 P0051 P0135 P015, 2011 Dodge Nitro Heat 3.7L V6. See all videos for the 2002 Jeep Liberty. This free video provide, 902. Feb 14, 2024. Boudreaux & Missy. B. S. 2006 Jeep Liberty flashing engine light and driving like , 1. Loose or bad gas cap. It is possible for the check engine light to come on in Renegade due to a loose or bad, To use remote start on a Jeep Cherokee, press and release the remote start but, Put it all back together, exact same problem. TPMS faulting, se, 8 posts · Joined 2010. #1 · Oct 20, 2010. We have a 2007 Grand, 5914 posts · Joined 2012. #4 · Jun 18, 20, Not likely, because the '07+ KJ 3.7s specify 5w20, and nothin, Mar 24, 2014 · 902. Feb 14, 2024. Boudreaux & M, My wife was driving our 2017 jeep patriot it has 6500, Dec 28, 2022 · How to Reset Jeep Check Engine Light. The, Will now have to take to another shop to have it checked since , 4,841. DE. Backcountry '16. Tuffy>AEV>TTO>JW>STec, Jeep liberty 3.7 / 4.7 check engine light flashing possible causesJeep, The flashing check engine light in Jeep Wrangler i.