This fault code reads differently, depending on a car’s year, make, and model. Similar to DTC P0456, code P0455 is quite self-explanatory and does not only relate to Jeeps (despite being referred to as Jeep code P0455 by most vehicle owners). It means “Evaporative Emission Control System (EVAP) – Gross/Large Leak Detected,” read via an OBD-II diagnostic scan tool. What the P0455 Code Meansĭiagnostic Trouble Code P0455 is an error concerning an issue with your vehicle’s emission control system. More serious faults, such as a defective Leak Detection Pump or FTP sensor, sticky purge valve solenoid, or a failing PCM, can also give rise to this trouble code.Ĭontinue reading this article if you want to learn more about the causes and symptoms of a P0455 Jeep code and how to resolve them.
A malfunctioning gas cap or a defective emissions control system component can cause the fault code. Symptoms include an illuminated CEL, subpar engine performance, stalling, and excessive exhaust smoke (among others). The P0455 Jeep code occurs when the PCM detects a large EVAP leak. An unattended EVAP leak can lead to hefty repair costs and poor vehicle performance. Many drivers often dismiss it due to its low drivability impact.
Disclosure: We may get commissions for purchases made through links in this post.Ĭode P0455 is a fault code usually found in sedans, SUVs, and even luxury vehicles.
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