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Home >> Jeep >> 2018 >> Grand Cherokee Laredo, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (3.0L Diesel - DTCS P0403-00 To P061C-00) >> DTC Troubleshooting >> P0506-00-Idle Speed Performance Lower Than Expected >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
MECHANICALLY DAMAGED ENGINE ACCESSORIES
SEVERE INTAKE SYSTEM RESTRICTIONS
PLUGGED EXHAUST SYSTEM
TRANSMISSION IMPROPERLY LOCKING TORQUE CONVERTER
FAULTY FUEL SYSTEM

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .