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  1. Engines & Drivetrain
    Okay I've got a 2006 jeep grand cherokee laredo 3.7l 65th anniversary, and I have a check engine light ran the codes and it came back p0152, p0151, p0300, p0129, check engine was flashing turned off an for a few then turned back on and drove just fine, I've already changed out all the o2...
  2. General Discussion
    I have a 2015 Jeep Patriot. The check engine light came on about two months ago. I took it to Auro Zone to have it connected to their diagnosis meter. The code came back as an evap leak. Didn't get a chance to take it in to be fixed. THis morning, I went to start it and it took a second to start...
  3. WK Grand Cherokee & XK Commander Forum
    P2096/2098 codes came on after we accidentally drove the car off the pavement (sliding/bouncing but didn't flip over). Initially only P2096 came on after the near-incident, then P2098 came on the following morning. The codes then disappeared for a few days then came back again after 3hr+...
  4. YJ Wrangler Technical Forum
    Hi All, I've got a 93 Wrangler with a 6 cylinder engine. My check engine light stopped working after I had the engine replaced a couple years ago while on a road trip from Missouri to California. In California, the light needs to work to pass smog and I'd like to get it fixed. I checked the...
  5. TJ Wrangler Technical Forum
    So I just bought a 2003 Jeep Wrangler TJ SE 2.4L 4-cylinder and after a couple days of driving, I noticed the check engine light came on. There are multiple codes that come up during testing, which include 0340, 0123, 0320, 0352, and 1391. It runs fine for the most part. The check engine light...
  6. General Jeep & Off-Road Equipment
    So I just bought a 2003 Jeep Wrangler TJ SE 2.4L 4-cylinder and after a couple days of driving, I noticed the check engine light came on. There are multiple codes that come up during testing, which include 0340, 0123, 0320, 0352, and 1391. It runs fine for the most part. The check engine light...
  7. Engines & Drivetrain
    So I just bought a 2003 Jeep Wrangler TJ SE 2.4L 4-cylinder and after a couple days of driving, I noticed the check engine light came on. There are multiple codes that come up during testing, which include 0340, 0123, 0320, 0352, and 1391. It runs fine for the most part. The check engine light...
  8. Engines & Drivetrain
    Hello my fellow Jeepers (what do we call ourselves??) Oviously new to this site but figured there would be no better place to seek some help because I'm desperate! To try and keep this simple, here are some bullet points of what is going on with my 2014 Jeep Cherokee Limited Edition...
  9. Wrangler General Discussion
    Wondering if anyone has ever seen this issue....or ideas: Check engine light, due to bad rear o2 sensor. Replaced both o2 sensors, check engine light went off. After driving 40 miles, light back on. Mechanic verified with computer that the o2 sensors are working. Reset the light again. After...
  10. WK Grand Cherokee & XK Commander Forum
    A few days ago my wk prompted me to "close fuel cap". It eventually was replaced by the check engine light. OBD reader shows p0456 (small leak). I replaced the fuel cap (old one was indeed not as tight compared to the new one) but the check engine light still persists after I drove two minutes...
  11. Engines & Drivetrain
    My car was been giving me issues since this April. Since April I replaced the radiator fan because that went out. Then in may it pulled a code p0300 so all the spark plugs were changed and it went away. The code pulled again so I took it to a mechanics and they changed the cylinder 6 injector...
  12. Engines & Drivetrain
    Okay, so i recently had my check engine light come on, i hooked my scanner up and it showed P0132. So i ordered a NTK Upstream Oxygen Sensor and replaced it. At the same time, I went ahead and took off the throttle body and cleaned the IAC and throttle body itself. I cleared the code and took it...
  13. JK Wrangler Technical Forum
    I had been getting an EGR trouble code (I forget exactly which one it was) on and off periodically. So I replaced my EGR valve and the code went away for a few weeks. Now the light has come on again and I'm getting P0401 - something about insufficient EGR flow. I don't know if the new EGR...
  14. XJ/MJ Cherokee Non-Technical Forum
    Just a PSA, I pulled my instrument cluster to clean the connections. My tachometer and speedometer were dropping out intermittently. As it turns out, my 'Check Engine' bulb was missing... I should've noticed this, but I didn't because I wasn't familiar with the Jeep. I figured that when I...
  15. WK Grand Cherokee & XK Commander Forum
    About a month ago I got a check engine light for an EGR valve(P0404) and then I replaced it, and it got better. The light went off, acceleration was smoother and gas mileage was better. Today it came back on. Any ideas? Maybe the new valve went wrong?
  16. Engines & Drivetrain
    For the last two weeks I have had a small evap leak in my 2010 Jeep wrangler. I have tried changing the gas cap but the check engine light came back on. I am really trying to avoid taking it to a shop and was hoping anyone could recommend what else I could try first?
  17. Engines & Drivetrain
    Hey guys, I recently took my jeep out of a 3 month hibernation and started driving it today. On the way back home my check engine light came on. The check engine light comes and goes. Sometimes its on when i start sometimes its not. Sometimes it comes back sometimes it doesn't. Lot of times...
  18. Engines & Drivetrain
    Hey Everyone, I am new to this forum and not very much of a gearhead to begin with so forgive me if this is posted in the wrong place or already answered somewhere else..but, I need some advice on an issue I am having with my 2011 Jeep Grand Cherokee. About 2 months ago my air conditioner...
  19. TJ Wrangler Technical Forum
    Hey everyone, I have a 2005 Jeep Wrangler X with about 72,000 miles on it. My check engine light came on and the codes are p0031, p0037, p0051, p0057. I've been trying to figure what could possibly be wrong. I changed relays, fuses, and even the oxygen sensors. Any ideas???
  20. Engines & Drivetrain
    Hi, My 2004 wj(4.7 HO) has almost 300,000 km on it and has been letting out some white/blue smoke at stops and starts as well as occasional rough/low idle. I decided to put lucas oil stabilizer in the oil as I have done before but also picked up the lucas fuel treatment and injector cleaner as i...
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