P0442 jeep liberty

2002 Jeep Liberty no check engine light but have 3 codes P0158 P0340 P0443 my 2002 Jeep Liberty Limited Edition 3.7L 4x4 problem is there is no check engine lit up and vehicule has all it's power with no problems, but when I hook up OBD11 scanner it show's 3 Faults PO158 (02 Sensor Circuit High) PO340 (Camshaft Position Sensor Circuit) and ...

Dec 17, 2018 · Te suministramos todo lo que necesitas saber sobre el código DTC P0442 Descripción, causas, síntomas y posibles soluciones. LEER SOLUCIÓN DEL CÓDIGO O... May 13, 2010 · Told a customer 3 days ago his XJ with the 4.0 I6 had 0 compression on cylinder 2 also,the plug electrode broke off and played hell with the cylinder wall and piston. My wife has a 2002 Jeep Liberty Limited w/ a 3.7L V6. I keep getting a misfire in cylinder #2. I replaced the spark plug and the coil already but i keep getting P0302 code. p0456 and p0442 Small/Medium Evap leak. So my CEL has come on and I pulled the codes the other day. Also cleared them and they came back. A 0.020 leak has been detected in the evaporative system. See TSB's 25-001-02A, 18-002-03 and 25-004-01. Also, possible faulty or loose gas cap.May 14, 2023 · The P0445 code indicates that the engine control module recognized a short circuit to the purge control valve. The Purge Control Valve is also called the EVAP valve, and it regulates the fuel vapors between the engine and the fuel tank. The purge control valve is often just a solenoid with two wires, 12v+ and ground. Liberty: I have a Jeep Liberty. DTC codes P0122, P0442. What is the normal voltage range Idle Throttle and WOT? ... The P0442 is "EVAP System Small Leak Detected" - this is a fairly tough one to diagnose, as trying to chase down an EVAP small leak "by eye" is virtually impossible. Best bet here is to have the EVAP system "smoked". …P0443 indicates a problem with the wiring to/from the purge valve or that the purge valve solenoid has a short/open circuit. It typically won’t affect the way that your Grand Cherokee runs. You may smell gas. Most commonly caused by a bad purge valve solenoid. Checking the gas cap may just save a lot of time.

2002 jeep liberty p0442 p0442 diagnostic code clear code p0442 jeep liberty fuel filter 1,119 views . Ask a Question. Usually answered in minutes! ... JEEP LIBERTY CHEROKEE Check Engine Light and Codes P0455 and P0442 on a 02 Jeep Liberty I brought my jeep liberty 2002 to a PepBoys to find out what was causing the check engine light to come on and the results indicated that there is some sort of leakage issue. The guy who checked it out said it was a vacuum leak.The actual codes are …Giới thiệu về Trường Tiểu Học Tân Hiệp B Giới thiệu chi tiết . Trường Tiểu Học Tân Hiệp …South Louisiana. Hi Folks! Just got the P0442 code again so when I get a minute or two, when its dry, and I have enough light, and not too cold, I'm going to check that hose again. The Jeep now has 178,000 + miles on it and is still running strong.© 2023 Google LLC While replacing a bad fuel pump I believe I found the cause of a P0442 Error code. I was able to repair the fuel pump assembly using some JB Weld.What Does Jeep Code P0456 Mean? Jeep P0456 definition: Evaporative emission control system leak (small).; Issue Severity: LOW – Continued driving for a short period of time is okay Repair Urgency: Get this fixed within the next month to prevent drivability problems and excessive fuel consumption. Diagnosis: It is unlikely the driver …OBD2 Code P0440 Jeep definition: This indicates that a part of the EVAP control system is no longer fuctioning correctly. The EVAP system consists of many parts, including (but not limited to) the gas cap, fuel lines, carbon canister, purge valve, and other hoses. The (EVAP) emission control system prevents the escape of fuel vapors from a ...

2003 Jeep Liberty: P0455 and P0442 on the odometer..engine lite..Jeep. My 2003 Jeep Liberty has codes P0455 and P0442 on the odometer. What does these codes indicate? The engine lite is always on in the Jeep. I am so used to seeing it there I just ignore it now.Jun 7, 2014 · CEL code P0440, P0441, P0442, P0446 explanation and common fix.Join our Facebook Group! https://www.facebook.com/groups/wrenchsense/Good EVAP leak tester: ht... Jun 17, 2019 · In this video we show the process for replacing a coil pack on a 2004 Jeep Liberty showing code P0304. This is no gaurantee to fix your problem, but in this ... I did check the evap purge solenoid and found that after the engine starts and warms up i can hear the solenoid activate. it is repeatedly clicking. I wasnt sure if this is normal or if it should only be clicking every minute or so. I removed the lines and pulled a vacuum on it and it held. Any input on how to accurately test it would be awesome.Dec 13, 2013 · p1684 code mean 2004 jeep liberty - Jeep Cars & Trucks question. Search Fixya. Browse Categories ... Dodge Caravan 2003 P1684 P0442 P0455 P0456 - OBD-Codes.com

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P1494 (M)Leak Detection Pump Sw or Mechanical Fault. Incorrect input state detected for the Leak Detection Pump (LDP) pressure switch. The Evaporative LDP switch may be bad or the pump itself has a problem. Check the pump, the wire connections, and the hoses attached to it. The Evaporative emissions system is design to prevent the escape of ...May 30, 2020 · The P0442 code means that the control module has detected a small leak in the Evaporative Emission (EVAP). Loose fuel tank filler cap is the most common cause that triggers the P0442 code. User Submitted Video. Check if Jeep has issued a Factory Service Bulletin for the P0442 code (2013 - Up Models): → Check here. 2002 jeep liberty p0442 p0442 diagnostic code clear code p0442 jeep liberty fuel filter 1,119 views . Ask a Question. Usually answered in minutes! ... The Jeep Wrangler is a car that bills itself on its fearless character. Jeep has sought to portray the car as the ultimate vehicle for adventure seekers who love exploring the uncharted path. This has proven to be more than marketing talk, ...May 14, 2023 · The P0445 code indicates that the engine control module recognized a short circuit to the purge control valve. The Purge Control Valve is also called the EVAP valve, and it regulates the fuel vapors between the engine and the fuel tank. The purge control valve is often just a solenoid with two wires, 12v+ and ground.

How To : Smoke test an EVAP leak (code P0442) in a 2002 Jeep Liberty After running a diagnostics test on a 2002 Jeep Liberty, if you get the code P0442, that means you have an Evaporative Emission Control System (EVAP) leak detected, which is just a small leak, but a leak nonetheless.The P0456 is a generic code stating that the Engine Control Module (ECM) detected a small leak from the evaporative system. This leak was detected during a self-test. For the code to come on, the test must fail two times …This page is meant to help you troubleshoot the Jeep Liberty P0420 trouble code. It covers the P0420 code’s meaning, symptoms, causes, and possible solutions. ... Related: P0442 Jeep Liberty. P0420 Causes . Here are the most common causes of P0420 in the Jeep Liberty: Likely Causes. Bad catalytic converter; Bad O2 sensor; Other Causes.What does this mean? Code P0442 Jeep Tech Notes The P0442 code means that the control module has detected a small leak in the Evaporative Emission (EVAP). Loose fuel tank filler cap is the most common cause that triggers the P0442 code. User Submitted Video ⚠ Does your Jeep have Safety Recalls? → Check here How to Fix the DTC P0442 Jeep?2002 Jeep Liberty EVAP P0455 & P0442 | Jeep Enthusiast Forums How To Retrieve Your Jeep’s Diagnostic Code | Quadratec. P0442 and P0455 evap emission repair for 2002 TJ | Jeep Wrangler TJ Forum. Jeep TJ OBDII Code List – YouTube. Check engine light on code P0455 large evap leak | Jeep Wrangler TJ Forum. P0455 and P0456 (2002 …Te suministramos todo lo que necesitas saber sobre el código DTC P0442 Descripción, causas, síntomas y posibles soluciones. LEER SOLUCIÓN DEL CÓDIGO O...The most common cause of a P0445 code is a failed purge control valve or the wiring to it. It could either be a broken wire or, more likely, a shorted wire. In some cases, it can also be caused by a software problem in the engine control module. Faulty EVAP Purge control solenoid. Wirings to EVAP purge control solenoid.Hey Folks, Got a check engine light a couple weeks ago and took my car …Sep 14, 2015 · If so, than check the O2 sensor voltage first. It should jump up and down from 0.2-0.8V. Than also check the fuel trim for the 1-1 sensor. Normally its +- 5, but with a faulty sensor it can become -30. Regarding the hard start, try to prime the fuel system first. Switch ignition to run two times and than start. Mar 9, 2012 · Unplug the vacuum supply hose at the purge solenoid and cap the hose. 3. Disconnect the electrical connector from the purge solenoid. 4. Connect a smoke machine to check for leaks. 4. The most likely leak area on this vehicle is the rubber hose ends at the evaporative canister. The ends crack.

JEEP LIBERTY CHEROKEE Check Engine Light and Codes P0455 and P0442 on a 02 Jeep Liberty I brought my jeep liberty 2002 to a PepBoys to find out what was causing the check engine light to come on and the results indicated that there is some sort of leakage issue. The guy who checked it out said it was a vacuum leak.The actual codes are …

P0443 definition: Evaporative Emission Control System Purge Control Valve Circuit Malfunction. Issue Severity: LOW – Continued driving for a short period of time is okay. Repair Urgency: Get this fixed within the next month. Diagnosis: This trouble code severely impacts the drivability of your vehicle. The most common problems consist of ...2002-2003 JEEP LIBERTY 3.7L RELUCTOR RING ... - eBay https://www.ebay.com > itm FOR SALE IS A 2002-2003 JEEP LIBERTY / 2002-2003 DODGE DAKOTA 3.7L V6 ENGINE 12 TEETH RELUCTOR RING. THIS ITEM IS ALSO KNOWS AS A TONE WHEEL. WILL FIT: 3.7L ... Missing: 4x4 ‎' Must include: 4x4 2002 …KJ General Discussion. Replies. 0. Views. 776. Jul 24, 2022. Mr L. Hey Folks, Got a check engine light a couple weeks ago and took my car to autozone to get it checked out. Diagnostic machine read: DTC (Codes) P0455 EVAP Emission Control System Leak (Large) DTC Pending (Codes) P0442 EVAP Emission Control System Leak (Small) Any ideas what...Jeep Liberty Forums. KK Liberty Forum. 2008 gascap... 13452 Views 19 Replies 8 Participants Last post by VMF, Jun 10, 2011 Jump to Latest J ... I think P0442 is small EVAP leak, P0455 is large EVAP leak, etc. Here's a couple links I quickly found. If you search, you should be able to find info you need on the codes you pulled off. ...Sep 26, 2011 · p0456 and p0442 Small/Medium Evap leak. So my CEL has come on and I pulled the codes the other day. Also cleared them and they came back. A 0.020 leak has been detected in the evaporative system. See TSB's 25-001-02A, 18-002-03 and 25-004-01. Also, possible faulty or loose gas cap. The evaporative emission control system (EVAP) prevents the escaping of gasoline vapors from the fuel system into the atmosphere. It redirects the vapors to a charcoal canister and then to an engine intake manifold. ECM checks the valves’ tightness and system pressure, and if the 0.2-0.4 inches leakage is detected, you can see the …Code P0442 Definition. P0442 – Evaporative Emission Control System Leak Detected (Small Leak) What Does the P0442 Code Mean? The P0442 trouble code shows a minor leak in the EVAP system. While it’s referred to as a leak, what it really means is that the EVAP system isn’t holding the proper amount of vacuum for a particular amount of time.Jeep Hire Izmir. Welcome to the Izmir Jeep Hire specialist online! We are the leading website for 4 wheel drive and jeep hire Izmir has to offer, finding you the best price rental from the leading suppliers. From the Suzuki Jimny to Jeep Grand Cherokee, we have the widest range of jeeps and 4 wheel drive rental vehicles available on the market.May 4, 2010 · A code P0442 most likely means one or more of the following has happened: * A loose or improperly affixed gas cap * A non-conforming gas cap (i.e. not factory/original brand) * A small leak/hole in a fuel vapor hose/tube * Other small leak in EVAP system * Faulty vent o-ring seal Possible Solutions With a P0442, the most common repair is to:

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Jeep Liberty Forums. KJ Liberty Forum 03 Liberty codes P0158, P0455 and P0442 ... P0455 and P0442 I disconnected the battery and waited 5 minutes to clear the codes off the fault register. Drove the kids around town all day Saturday for about 20 miles worth of driving with multiple starts and stops at the store and friends homes etc. …EVAP System Leak Repair Cost, Symptoms #3. Difficulty In Starting Up The Engine. Difficult starting is also among the symptoms showing your vehicle has an EVAP system leak. This is because of a vacuum leak developed from issues with your charcoal canister, and it might make your vehicle’s engine difficult to kick off.If your Jeep Wrangler has the P0442 OBD II code, you should first check the fuel cap. If it’s missing or broken, replace it. If the fuel cap seems ok, you must check the EVAP system for a leak. One of the most common issues that happens with the Jeep Wrangler is the P0442 trouble code. This code appears when connecting the vehicle to an OBDII ...#1 · Dec 31, 2021 (Edited) Happy New Year all. I know there are a lot of posts about both P0455 & P0442 and I've read them all but had a question. I have a 2002 Jeep Liberty 4WD 3.7L that I really don't drive much. 145k miles.Whether you’re in the market for a mid-sized SUV or want to learn more about the Jeep brand, this simple guide will help you gain a basic understanding of the Jeep Grand Cherokee. From Grand Cherokee problems to the model’s history, learnin...Oct 4, 2018 · When there is a large leak in the Jeep Liberty’s EVAP system, it will throw the P0455 OBDII Code. P0455 indicates a large leak in the evaporative emission control system. (EVAP). There are different leak size codes. For example, P0456 means your Liberty has a small EVAP leak. While the trouble code may state that there is a “large leak ... What the P0432 code means. The P0432 code means that your catalytic converter for bank 2 of your engine is performing below what it should be. Generally, this is a sign that the converter has failed, but the problem may be related to an oxygen sensor. The catalytic converter is responsible for burning harmful emissions in your exhaust, and if ...Usually this P0456 Jeep code is caused by an incorrect or faulty gas cap. Filling the fuel tank with the engine running could conceivable cause this code as well or if the cap wasn’t properly tightened. Any of the following could also be the cause: A small leak in any of the EVAP hoses or fuel tank hoses A small leak in the purge valve or ...I have two codes for my 2002 Jeep Liberty P0455 and P0442. What does this mean … read more Ron Z. Vocational, Technical or Tra... 25,649 satisfied customers 2003 jeep TJ. warning light stays on. I went to Auto Zone. 2003 jeep TJ. warning light stays on. ….

What Does Jeep Code P0303 Mean? P0303 definition: Cylinder 3 misfire detected. Issue Severity: SEVERE – Stop driving immediately. Repair Urgency: Fix this code immediately (same-day if possible) to avoid ignition failure, catalytic converter damage, and dangerous conditions. Diagnosis: A cylinder 3 misfire can be caused by anything from …What the P0432 code means. The P0432 code means that your catalytic converter for bank 2 of your engine is performing below what it should be. Generally, this is a sign that the converter has failed, but the problem may be related to an oxygen sensor. The catalytic converter is responsible for burning harmful emissions in your exhaust, and if ...we have 2002 Jeep Liberty,the check engine lite came on with the code P0442, we changed the gas cap but lite will not go off.What can I do.I need a smog and will not pass with lite on.To have it checked out it will cost $150.00 .Darol AndersonJan 24, 2023 · The easiest way to reset the check engine light on your Liberty is with FIXD. While auto parts stores will typically read your codes for free, they will not reset the light for you, and shops may charge more than $100 to do this. In the FIXD app, you can reset the light anytime you want for free. I have a 2002 Jeep Liberty Limited Edition that has code P0442, which is Evap Leak Monitor Medium Leak Detected (a small leak has been detected in the evaporative system). This came on after turning o …P0442-EVAP system medium leak P0303-Cylinder no. 3 misfire already cleaned the pcv valve and replaced the purge control solenoid to no avail for the p0442. been having that one for a while but the p0303 is new and the motor makes a funny noise around 2k rpms when accelerating which might...Numerous factors can trigger the P0442 error code in the Jeep Liberty. The most prevalent issue is undoubtedly the gas cap. Bad or Loose Gas Cap A bad or loose gas cap will also trigger this trouble code. So if it's the first time you have experienced this issue, you may want to tighten the fuel cap and see if the code clears itself.Jeep Liberty Forums. KJ Liberty Forum 03 Liberty codes P0158, P0455 and P0442 ... P0455 and P0442 I disconnected the battery and waited 5 minutes to clear the codes off the fault register. Drove the kids around town all day Saturday for about 20 miles worth of driving with multiple starts and stops at the store and friends homes etc. …Nov 17, 2019 · In this video will be diagnosing an EVAP system leak on a Jeep Wrangler. p0442 small evap leak, P0445 indicates that there is improper purge flow, EVAP System – Small Leak. One of the most... P0442 jeep liberty, I have a 2002 Jeep Liberty Limited Edition that has code P0442, which is Evap Leak Monitor Medium Leak Detected (a small leak has been detected in the evaporative system). This came on after turning o …, If your Jeep Wrangler has the P0442 OBD II code, you should first check the fuel cap. If it’s missing or broken, replace it. If the fuel cap seems ok, you must check the EVAP system for a leak. One of the most common issues that happens with the Jeep Wrangler is the P0442 trouble code. This code appears when connecting the vehicle to an OBDII ..., P1494 (M)Leak Detection Pump Sw or Mechanical Fault. Incorrect input state detected for the Leak Detection Pump (LDP) pressure switch. The Evaporative LDP switch may be bad or the pump itself has a problem. Check the pump, the wire connections, and the hoses attached to it. The Evaporative emissions system is design to prevent the …, Lilah Butler, Car Insurance WriterJan 27, 2023 Lilah Butler, Car Insurance WriterJan 27, 2023 This review is not provided, commissioned or endorsed by any company. Opinions and ratings are our own. Liberty Mutual is a pretty good insurance ..., Jan 28, 2013 · This code is usually caused by a bad transmission range sensor. Here is the definition for this code. P0706 Check Shifter Signal. Possible Causes. TR sensor connector is damaged. TRS T1 sense circuit is open or shorted to ground or shorted to voltage. TRS T3 sense circuit is open, shorted to ground or shorted to voltage. , P0440 Causes. There are many potential causes of code P0440. Missing, defective, damaged, or loose gas cap (*Most Common) Leaking or disconnected EVAP hose. Faulty purge volume valve. Faulty canister vent control valve. Charcoal canister leak. Leaking fuel tank., I did check the evap purge solenoid and found that after the engine starts and warms up i can hear the solenoid activate. it is repeatedly clicking. I wasnt sure if this is normal or if it should only be clicking every minute or so. I removed the lines and pulled a vacuum on it and it held. Any input on how to accurately test it would be awesome., I have been driving my 03 liberty 4x4 for quite a while with this code P0442 Evaporative Emission Control System Leak Detected (small leak). I did replace the gas cap but that didnt change anything. ... 2003 jeep liberty 80k miles Automatic Transmission 3.7L V6 Past repairs include Broken valve spring. Replacement transmission ECM. All new ..., The P0455 Jeep code occurs when the PCM detects a large EVAP leak. Symptoms include an illuminated CEL, subpar engine performance, stalling, and excessive exhaust smoke (among others). A malfunctioning gas cap or a defective emissions control system component can cause the fault code. However, the list does not end there., Those are both Evaporative Emission Control System related. 442 is a small leak has been detected. 455 is a bigger leak has been detected. Check all your connections, (electrical & vacuum lines) as well as check for any cracked, loose vacuum hoses in the system, as well as clean "O" ring on your gas cap well and threads in filler pipe & make sure gas cap is tight. , =============================Claim your FREE engine code eraser 👉 https://free.nonda.co 👈==== How to Fix P0442 ===========Engine Code P0442 Saving Repair P..., About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ..., Jun 17, 2019 · In this video we show the process for replacing a coil pack on a 2004 Jeep Liberty showing code P0304. This is no gaurantee to fix your problem, but in this ... , =====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈== How to Fix P0456 =====Engine Code P0456 Saving Repair P..., How to smoke and evap system to find the leak, Photo about Izmir, Turkey - September 9, 2021: Izmir woman ryhthm group performing on the Republic square in izmir and on the day of Liberty Izmir. Image of music, percussion, ceremony - 230266426, 03 Jeep Evap P0442 DTC EVAP P0442 P0455 P0456. youtube.com. 2001 Jeep Cherokee Sport Large EVAP Leak. youtube.com. 03 Jeep Evap P0442. DTC EVAP P0442 P0455 P0456. ... SOURCE: 03 Jeep Liberty - Evap system small leak. how about the filler neck. just had to replace mine and now its fine Posted on Jun 18, 2009., Dec 16, 2019 · Jeep Liberty P0443 Causes Top Causes. P0443 indicates that there’s an issue with the process that commands the purge valve solenoid. The Liberty’s ECM commands the purge valve by activating a ground circuit. P0443 occurs when the ECM has told the purge valve to open, and it detects that didn’t open due to a wiring issue. , Video. Photos. Possible Solutions With a P0442, the most common repair is to: Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back. Otherwise, replace the gas cap, or. Inspect the EVAP system for cuts/holes in tubes/hoses. Aug 04, 2009 • 2001 Dodge Neon., How to Fix the P0505 Code. Once you’ve figured out what caused the P0505 code, you can move on to fixing it. You could let your mechanic do the job or you can do it yourself with the help of repair manuals or online auto repair guides.. Take note that a fix that works for one particular car may not work for another model, especially one made by …, The P0455 Jeep code occurs when the PCM detects a large EVAP leak. Symptoms include an illuminated CEL, subpar engine performance, stalling, and excessive exhaust smoke (among others). ... If the problem source of your P0455 Jeep code turns out to be complicated or sets off other fault codes like P0442, P0440, or P0445, outsource the task …, Aug 18, 2014 · I did check the evap purge solenoid and found that after the engine starts and warms up i can hear the solenoid activate. it is repeatedly clicking. I wasnt sure if this is normal or if it should only be clicking every minute or so. I removed the lines and pulled a vacuum on it and it held. Any input on how to accurately test it would be awesome. , May 13, 2010 · Told a customer 3 days ago his XJ with the 4.0 I6 had 0 compression on cylinder 2 also,the plug electrode broke off and played hell with the cylinder wall and piston. My wife has a 2002 Jeep Liberty Limited w/ a 3.7L V6. I keep getting a misfire in cylinder #2. I replaced the spark plug and the coil already but i keep getting P0302 code. , Oct 3, 2010 · I have a P0320, P0455 and a P0442 code on my 2002 Jeep Liberty and I have no idea what this means. This problem maybe caused by a split vacuum pipe or vacuum valve. Listen to the engine running (around intake manifold) and see if you can detect a loud hissing noise. , SOURCE: 2002 jeep grand cherokee with 4.0 engine will die but restart p0340 is the cam shaft sensor, this will cause it to cut off while driving, hardtime starting, p0351 is the ignition coil A primary/secondary curcuit mal function. p1391 is ignition system misfire, this could be plugs, wires, or coils. first of all have the cam sensor changed and it may correct the rest of the codes. when ..., The price of your EVAP system leak repair is dependent on two factors: the cause and location of the leakage. Additionally, costs can differ depending on the type of vehicle you have. In general, you should expect to pay around $200- - $400 for your. EVAP system leak repairs. , but you should confirm that this is the case where you live., While replacing a bad fuel pump I believe I found the cause of a P0442 Error code. I was able to repair the fuel pump assembly using some JB Weld., Those are both Evaporative Emission Control System related. 442 is a small leak has been detected. 455 is a bigger leak has been detected. Check all your connections, (electrical & vacuum lines) as well as check for any cracked, loose vacuum hoses in the system, as well as clean "O" ring on your gas cap well and threads in filler pipe & make sure gas cap is tight. , Today: LET THE PROBLEMS BEGIN!!! My engine light tripped and I got po455 (p0455) Gross Evap Leak. In my old Volvo It was a cheap little purge valve Right on top of the engine 20 bucks and no tools needed. When I posted on the Volvo forum I got a half dozen responses immediately, all saying the exact same thing., Jeep Liberty Check Engine Light/Misfire Due to Intake Valve Locks/Valves. ...Misfire cyc 4 and random cyc misfires, changed coil packs and plugs... sounds as if rod ... Light came on again (misfire on cylinder 4) - switched coil from 4 to 2. Light ... Jeep Liberty Questions - Cylinder Misfire code - CarGurus www.cargurus.com > Questions > Jeep ..., A. Abby_Guts Discussion starter. 18 posts · Joined 2007. #1 · Mar 23, 2008 (Edited) Hi, My Check Engine light came on in Dec 2006 and the code was P0442 - EVAP leak. Had it to the dealer (before I learned the key trick to read the codes) and the invoice says: PERFORMED LEAK DETECTION PUMP TEST - FAILED. PERFORMED SMOKE …, © 2023 Google LLC While replacing a bad fuel pump I believe I found the cause of a P0442 Error code. I was able to repair the fuel pump assembly using some JB Weld., May 4, 2010 · A code P0442 most likely means one or more of the following has happened: * A loose or improperly affixed gas cap * A non-conforming gas cap (i.e. not factory/original brand) * A small leak/hole in a fuel vapor hose/tube * Other small leak in EVAP system * Faulty vent o-ring seal Possible Solutions With a P0442, the most common repair is to: