Jeep Compass engine soon light issue related to purge solenoid on Jeep Compass

Some Jeep Compass owners report experiencing issues with the service engine soon light related to the purge solenoid, which can indicate problems with the EVAP purge flow. A flashing service engine soon light signifies an urgent need for immediate attention. Additionally, if the pressure in the charcoal canister and fuel tank fails to drop during purge control, this can trigger the warning light. Some owners find that the Powertrain Control Module (PCM) may command the purge solenoid to flow at a specified rate to adjust the purge vapor ratio when certain ratios fall below calculated values. It's important to note that problems with the EVAP system or the purge valve may not always be the direct cause, necessitating accurate diagnosis of the specific issue. Furthermore, if the charcoal canister fills with liquid gasoline instead of vapors, it can lead to an overly rich mixture in the engine, resulting in sputtering and stalling. Prompt diagnosis and action are crucial to address these potential issues effectively.