It’s generic code, which means that it means the same thing for the Jeep Grand Cherokee as it would for any other vehicle. When the PCM sees voltage at cylinder 2 that is out of the normal operating range, it’ll trigger this code. P0202 is usually caused by a bad fuel injector or wiring issue. If the misfire were in cylinder 1, you’d get There can be different reasons causing the P0301 code to show up in your Jeep. Symptoms of a P0301 code vary depending on the cause. Here are some common symptoms of a P0301 code: A hard start or no start. Decrease in power. More fuel consumption. Stalling periodically, especially when the vehicle is idle. Rough idling. 1997 jeep grand Laredo 4.0. has a purge monitor rpm shift,iac shift, and adaptive fuel shift code. Also A p0300 code came up which is a random/ multiple cylinder misfire detected. Its in great shape g … read more The bad heads were on bank 2. The code the OP has is on bank 1. There is quite a bit of troubleshooting to do before buying parts. Things like looking for loose connections, chafed or broken wires, looking for proper signals from the cam and crank sensors with a lab scope, looking at the tone wheels for the sensors, loose or improperly mounted sensors, etc. But now with the P0300 code. So this is what I Ruled out. (1)The battery and Starter the Jeep turns over no problem. (2) The Cam Position Sensor I replaced it last summer. (3) Throttle Position Sensor recently replace. (4) Ignition Coils less than a month old. (5) Crank Sensor I replaced it with three new sensor at AutoZone. I got a 2004 grand cherokee 4.7L h.o. codes po300 po302 po308 po174 po155. at idle fuel trim on bank 2 is -30%long term -23%short term. bank 2 sensor 1 is showing between 0.90v and 0.10v .bank 2 sensor 2 is stuck at 0.10v. on a cold start i felt a miss and the cat turned red. i shut it off to install a back pressure gauge but when i restarted P0300 (Multiple Cylinder Mis-fire) and P0306 (Cylinder #6 Misfire Detected) This all started with a P0320 code (Crankshaft Position sensor). When coming to a stop the Jeep would randomly die. It would always start back up. This happened four or five times in the course of a week. I had a code of P0320 so I replaced the crank position sensor and SOURCE: 2005 Grand Cherokee 4.7L. P0300 is Multiple Misfire and P0303 is one specific misfire in the cyl #3. A code P0303 may mean that one or more of the following has happened: rXQqAqQ.