Logically, anything that could cause a large leak in the evaporative emission control system (EVAP) will trigger the P0455 trouble code. Since this can happen in many ways, the causes of the P0455 Wrangler code are diversified. However, the most common culprits are: Malfunctioning gas cap. Defective EVAP hoses and filler neck. This will cause the P0456 code. Look for either a tear or hole in it. This is one of the most common issues that causes the code. Vapor Canister Purge Valve– One of the most common causes of the P0456 code is the vapor canister purge valve. It’s really easy to replace. There are a few clips that you need to find and remove. My 2002 Jeep Grand Cherokee failed its emissions test with the following codes: P0442, P0455, P0456. I have had problems before with the gas cap and replaced it - car passed. Am I looking at replacing … read more When there is a large leak in the Jeep Grand Cherokee’s EVAP system, it will throw the P0455 OBDII Code. P0455 indicates a large leak in the evaporative emission control system. (EVAP). There are different leak size codes. For example, P0456 means your Grand Cherokee has a small EVAP leak. P0158 won't stay away!! '01 Jeep Grand Cherokee Limited. Good morning to everyone. This is my first Jeep and I have to say so far I'm lovin' it! When I purchased it 2 weeks ago it needed cleaned up, passenger window motor replaced, cruise control fixed, blinker solenoid replaced, rear differential had small leak, Codes P0455, P0161, P0158. Jeep Codes by Model. Model Year Engine information System; 89–95 Jeep: 1989-95 : Cherokee 2.5L: Grand Cherokee 3.0L: 2007-09: VIN Position 8=M: NGC 3: Grand j0TxchI. 2002 G Cherokee 4.7L Codes are P0340,P0135,PO740,P0455 and says control system, leak defected? Also posted earlier - Jeep Grand Cherokee question 7154 posts · Joined 2012. #3 · Dec 15, 2015. I had similar codes on my DD car. Initially, they replaced the fuel tank because of the same reason that yours was replaced. That cost me over $1,100 two years ago. Fortunately, the dealer I use has a "Fixed for Life" guarantee, where if the same problem ever happens again I only have to pay for Common Reason: Code P0457 is often related to a loose gas cap. The Evaporative Emission (EVAP) Control System is in vehicles to prevent the emissions of fuel vapor (hydrocarbons) into the atmosphere. The EVAP system communicates with the PCM and when there is a vacuum leak in the system, there are one of three codes that can be triggered: P0455 What the P0457 code means. The evaporative emission system is designed to keep fuel vapor from leaking out into the surrounding air and causing pollution. If there’s a vacuum leak in this system, a P0455, P0456, and/or P0457 code will be detected and stored by the PCM. These codes are very similar, but they differ in how severe the leak is. My 2003 had a fault light come on and the code was the p0442. A new Stant gas cap from the local auto parts store fixed it. Just change it to eliminate the cap as a problem for something like $13.00. The most common cause of a P0445 code is a failed purge control valve or the wiring to it. It could either be a broken wire or, more likely, a shorted wire. In some cases, it can also be caused by a software problem in the engine control module. Faulty EVAP Purge control solenoid. Wirings to EVAP purge control solenoid.

jeep grand cherokee code p0455