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Home >> Jeep >> 2021 >> Grand Cherokee L Laredo, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (5.7L - DTCS P025B To P0455) >> DTC Troubleshooting >> P0354-Ignition Coil 4 Primary Circuit >> Possible Causes

Possible Causes

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Possible Causes
FUSED OUTPUT RELAY CIRCUIT OPEN/HIGH RESISTANCE
IGNITION COIL 4 CONTROL CIRCUIT OPEN/HIGH RESISTANCE
IGNITION COIL 4 CONTROL CIRCUIT SHORTED TO GROUND
IGNITION COIL 4
POWERTRAIN CONTROL MODULE (PCM)

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