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2005\u20132006 Jeep Wrangler TJ models are notorious for PCM failures.<\/strong> Symptoms include random stalling, misfiring, false error codes, and starting problems. A replacement PCM pre-programmed to your VIN is usually the fastest fix \u2014 browse Jeep Wrangler PCMs here<\/a>.<\/p>\n<\/div>\n The powertrain control module (PCM) —\u00a0sometimes also\u00a0called an engine computer, ECM, or TCM —\u00a0 in your Jeep Wrangler<\/a> acts as the brain of your vehicle\u2019s engine.<\/p>\n More specifically, the PCM in your Jeep is actually a combination of two other computers, the engine control module and the transmission control module. Although it may appear like a single unit from the outside in most vehicles, it is made up of these two separate units which are housed together in a single module.<\/p>\n Think of the powertrain control module as a computer similar to your laptop. On the inside it is a combination of circuits and wires that relay and store important data and information. Like the computer you are reading this on, PCM function is determined and controlled by software that allows it to work seamlessly with your particular vehicle.<\/p>\n Your Jeep Wrangler powertrain computer\u00a0controls literally hundreds of functions and processes within your Jeep\u2019s engine.\u00a0 This can include everything from controlling when your transmission shifts gears to fuel injection parameters to determining when to activate your check engine light. Needless to say, if your Wrangler’s\u00a0central computer is not functioning properly, it’s not going to be running properly.<\/p>\n Among other symptoms, signs that your Jeep needs a new PCM include the following:<\/p>\n There is a very common\u00a0issue with control modules in 2005 and 2006 models of the Jeep Wrangler.\u00a0 \u00a0If you keep your Jeep long enough, you’ll probably encounter a situation where you’ll need to repair or replace your Jeep Wrangler PCM<\/a>.\u00a0 If you ever notice any of the above signs of a failing Jeep Wrangler PCM, you will want to have the issue checked out to see if the problem is actually the powertrain control module.<\/p>\n Shop by year:<\/strong> 2005 Jeep Wrangler PCM<\/a> | 2006 Jeep Wrangler PCM<\/a><\/p>\n When it comes to 2005 and 2006 Jeep Wranglers, there\u2019s a strong chance the PCM is to blame.<\/p>\n The TJ Wrangler model produced between 1997 and 2006 was a popular vehicle. It widened the Wrangler\u2019s appeal by offering a smoother ride and more comfort, safety, and entertainment options\u2014features that all add stress to the PCM, just to point out. This model of Jeep Wrangler was so popular that over 965,000 were produced between 1997 and 2006, with over 175,000 2005-2006 TJ Jeep Wranglers being produced.<\/p>\n Put simply, there are a lot of these vehicles on the road, then and now. The problem is, despite being extremely popular, Jeep TJ Wrangler models weren\u2019t without their issues. You can check out any Jeep forum online and see that 2005 and 2006 Wrangler models are notorious for having a host of PCM problems.<\/p>\n From the stalling, misfiring, starting, and performance issues stated above, to issues with engine temperature readings and false engine error codes, the headaches are bad and frequent.<\/p>\n There are a variety of reasons why your Jeep PCM might fail. One the primary ways is because of physical damage. This can be caused by environmental factors like corrosion, thermal stress, vibrations, or if the computer is submerged in water or mud while your tearing off road in your Wrangler. You could also have a voltage overload if there\u2019s a problem with your Jeep\u2019s power supply or wiring, or you might have just gotten unlucky with a poorly manufactured PCM.<\/p>\n However, if the problem with your Jeep Wrangler PCM has no discernible physical cause, there\u2019s a chance it might be an issue with the software.<\/p>\n When you have an issue with or even a failing powertrain control module or engine control module, oftentimes there\u2019s an issue with the software and you have to get it reflashed. Reflashing your Jeep Wrangler PCM is a tuning technique that is also often called flashing, remapping, or flash tuning. Reflashing is not just for bad PCMs, however, you can also reflash your Jeep Wrangler to get the latest software or updates from the manufacturer (OEM).<\/p>\n Like any computer, your car\u2019s PCM or ECM has software with different settings or parameters, and these can be changed to alter the performance and driving limits of a vehicle. Reflashing or remapping an engine computer is essentially just the process of replacing the existing software in a vehicle controller with new software.<\/p>\n The problem with reflashing a 2005 or 2006 Jeep Wrangler, however, is that the post-flash computers have a very high rate of failure once completed, regardless of where you get it reflashed at. Although there are numerous reports of 2005-06 TJ PCM problems (both with the original PCM and software and with difficulty reflashing), there has, unfortunately, never been a recall, legal action, or support from the manufacturer. This has left many Jeep owners without any options.<\/p>\n That is until we developed a solution at Car Computer Exchange.<\/p>\n Car Computer Exchange Can Flash Your 2005-6 TJ Wrangler PCM<\/strong><\/a><\/p>\nWhat Does a PCM Do in a Jeep Wrangler?<\/h2>\n
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Jeep Wrangler PCMs for 2005-2006<\/h2>\n
TJ Wrangler Model<\/h2>\n
Causes of a Jeep Wrangler PCM Failure<\/h2>\n
Reflashing 2005 and 2006 Wrangler PCMs<\/h2>\n