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Home >> Jeep >> 2025 >> Grand Cherokee Altitude, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 23 (2.0L - DTCS P2299 To P2453) >> DTC Troubleshooting >> P2400 Evaporative Emission System Leak Detection Pump Control Circuit/Open >> 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 OPEN/HIGH RESISTANCE
ELCM VACUUM PUMP GROUND CIRCUIT OPEN/HIGH RESISTANCE
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  .