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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 99 (6.7L Diesel - DTCS - P1192 To P21C3 - 3500 Cab & Chassis) >> Diagnosis and Testing >> P1484-Catalyst Overheat Detection >> 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 
FAULTY FUEL INJECTOR CAUSING EXCESSIVE UNBURNED FUEL TO ENTER THE EXHAUST SYSTEM
IMPROPER FUELING
TEMPERATURE SENSORS FAILED IN-RANGE
EXCESSIVE ENGINE OIL BEING INTRODUCED INTO THE AFTERTREATMENT SYSTEM FROM THE ENGINE

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE - 6.7L  . 

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