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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1657 (5.7L CNG - DTCS P01A0 To P0506 - 2500 Hd) >> DTC Troubleshooting >> P0506-Idle Speed Performance Lower Than Expected >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
AIR INDUCTION SYSTEM RESTRICTIONS
PCV SYSTEM RESTRICTIONS
POWERTRAIN CONTROL MODULE (PCM)

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