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Home >> Chrysler >> 2011 >> 300 Base, Gas >> Repair and Diagnosis >> External Pages >> Different car >> Section 98 (6.7L Diesel - DTCS - P040D To P1191 - 3500 Cab & Chassis) >> Diagnosis and Testing >> P0506-Idle Control System Rpm - Lower Than Expected >> Code Description >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
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 - 6.7L  .