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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1649 ((Rear Air Suspension Control Module (ASCM) - Electrical Diagnostics - 2500 Hd)) >> DTC Troubleshooting >> C15D9-00-Low Air Mass >> 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
LOW AIR MASS
AIR SUSPENSION SYSTEM LEAKS
AIR SUSPENSION CONTROL MODULE (ASCM)
NOTE:

If any ASCM DTCs are present, repair them first before continuing with this diagnostic procedure. 

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to ASCM PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

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