![]() Reasons that your Check Engine light turning on include emissions problems, faulty O2 sensors, and problems with the PCM. The Check Engine light turning on randomly tops the list. Among these are engine light issues and power steering, according to Jeep Cherokee owners. The PCM may provide wrong inputs, which leads to other problems. Unfortunately, this is part of the 1998 Jeep Grand Cherokee PCM problems, and one of the most frustrating issues owners had to address. If the PCM is faulty, it can lead to stalls or rough idling. One function of the Jeep Cherokee PCM is to control fuel injection and determine the right time to switch gears. #Pin out pcm jeep cherokee 4.ol full#But you would know that you are having Jeep Cherokee PCM problems if your code scanner is reading random codes that begin with a “P06.” Click here for a full list of powertrain error codes. There are a total of 5000 generic and manufacturer-exclusive OBDII codes programmed into Jeep vehicles. The PCM may display random error codes (also known as OBDII codes), even if nothing is wrong with your Jeep. Additionally, it will prevent costly repairs and misdiagnosis of your Jeep’s issues. Determining why the PCM specifically fails is essential in avoiding the same damage to the replacement. Problems may also occur if vibration causes micro-cracks in the unit. Problems with sensors become more noticeable.Ī PCM can fail due to several factors, such as a short circuit, corrosion, or thermal stress.Here are some common Jeep Cherokee PCM problems: With the Jeep Cherokee in particular, owners have come across issues they’ve encountered with it. Sometimes, however, the PCM runs into problems. By controlling both the transmission and engine, the PCM can easily coordinate functionality and improve the vehicle’s performance. It monitors the air-to-gas ratio, performance, and ignition timing. The Powertrain Control Module (PCM) is a computer that controls your vehicle’s essential functions, such as changing gears and anti-lock brakes. Disclosure: We may get commissions for purchases made through links in this post. ![]()
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