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Home >> Jeep >> 2005 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 553 (DTCS P1602 To P2115) >> Diagnosis And Testing >> P1647-Hydraulic Cooling Fan Control Circuit High >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
(Z823) GROUND CIRCUIT OPEN
(K173) HYDRAULIC RADIATOR FAN SOLENOID CONTROL CIRCUIT SHORTED TO VOLTAGE
INTEGRATED POWER MODULE
FRONT CONTROL MODULE

Always perform the  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  before proceeding. 

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