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Home >> Jeep >> 2006 >> Liberty Limited, 2.8 5 >> Repair and Diagnosis >> Engine Performance >> System >> Diesel - DTCS P0671 To P1102 >> Diagnosis And Testing >> P0683-Glow Plug Module Signal Circuit Malfunction >> Possible Causes

Possible Causes

Possible Causes 
ENGINE CONTROL MODULE
GLOW PLUG MODULE
GLOW PLUG MODULE SIGNAL/CONTROL CIRCUIT OPEN
GLOW PLUG MODULE SIGNAL/CONTROL CIRCUIT SHORTED TO GROUND
GLOW PLUG MODULE SIGNAL/CONTROL CIRCUIT SHORTED TO VOLTAGE
INTERMITTENT CONDITION
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