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Home >> Jeep >> 2025 >> Grand Cherokee Altitude, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 44 (2.0L - DTCS P1404 To P1572) >> DTC Troubleshooting >> P1405 EVAP System Leak Detection Pump Stuck On >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2025 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
ELCM VACUUM PUMP CONTROL CIRCUIT SHORTED TO VOLTAGE
EVAPORATIVE LEAK CHECK MODULE (ELCM)
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to:  2.0L - PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .