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Home >> Jeep >> 2021 >> Grand Cherokee L Laredo, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (5.7L - DTCS P2167 To U0151) >> DTC Troubleshooting >> P3401-Cylinder 1 Deactivation Control Circuit >> Possible Causes

Possible Causes

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Possible Causes
MDS SOLENOID 1 CONTROL SHORTED TO BATTERY VOLTAGE
MDS SOLENOID 1 CONTROL SHORTED TO GROUND
MDS SOLENOID 1 CONTROL OPEN
GROUND CIRCUIT OPEN
MDS SOLENOID 1
POWERTRAIN CONTROL MODULE (PCM)

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