MeanGreenZJ. 1708 posts · Joined 2011. #9 · Feb 2, 2012. My guess is that the P0430 code is triggered by the P2098 code. Which points to a failed 02 sensor or circuit, exhaust leak or mechanical issues. Or as said above a flash update issue. K. ksjeepin Discussion starter. 12 posts · Joined 2011. SOURCE: my 2001 jeep grand cherokee laredo is having. P0300 Diagnostic Code - Random/Multiple Cylinder Misfire Detected Basically this means that the the car's computer has detected that not all of the engine's cylinders are firing properly. A P0300 diagnostic code indicates a random or multiple misfire. So, replace the sensor to solve the code P0038 on your Jeep vehicle. On average, it will cost between $150 and $470 to replace a bad oxygen sensor bank 1 sensor 2. The labor cost can be between $100 and $130, while a new oxygen sensor can cost around $20 to $298. 5. Checking the ECM: Jeep Grand Cherokee P0303 Symptoms. Check Engine Light is on. Check Engine Light flashing. Engine runs rough and shaking. Lack of power from the engine. Fuel smell from the exhaust. Hesitations/Jerking when accelerating. Commonly associated with code P0300. 2005 Jeep WK 4.7 P0300 Misfire. Starting up a new forum that is fresh and not cluttered. I have had a misfire on my 05 Grand Cherokee for about 2 months now. The code is P0300. So it is a random misfire. Previously had Superchips 93 tune but changed back to stock tune. As well as running 87 octane. 2015 Jeep Cherokee 3.2. P0305 cyl 5 misfire. Only noticeable at idle, no difference in drivability. Code only sets when idled for an extended period of time. Coil pack and spark plug appear to be new … read more y0QvJ. We bought this about two weeks ago. 05 Laredo, 46,000 miles, meticulous service records. I am getting an intermittent, like every couple of days, P0300 code - random cylinder misfire. It had plugs at 35,000 miles. I haven't checked them but that shouldn't be a problem unless they put the wrong plugs in (platinum instead of copper). 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 6585 posts · Joined 2015. #3 · Jun 21, 2016. A faulty O2 sensor can cause a misfire, and a multi cylinder misfire (p300) can cause bad O2 readings. The 3.7l engine is notorious for having issues if overheated, anything from dropping valve seats and leaking valves to warped heads. The fact that you didn't get specific cylinders reporting P0351- Ignition coil #1 primary circuit. P0353- Ignition coil #2 primary circuit. P0353- Ignition coil #3 primary circuit. any other advice would be great guys thanks! 2004 - Grand Cherokee Freedom Edition. 2002 jeep grand cherokee p0300 multiple cylinder misfire. Its got the 4.7 v8 125k milesit started throwing this code occasionally, at high rpm 4k & now more often. Also it seems to happen more severely with the a/c on going uphill, it also throws individual cylinder misfire codes it started with cylinder 4, then 4&7 now 4, 7, 2, 6, it starts 1998 Cherokee Classic. none. My sons 4.0 is throwing a P0300 code and spitting and sputtering like crazy. After looking it up I see that it means that it is a multiple cylinder misfire which is exactly what it feels like. The first ( and cheapest ) thing I thought of was maybe a cracked distributor cap because he said it happened right after

jeep grand cherokee code p0300