Possible Causes
WARNING: This page is about a different car, the 2015 RAM 3500 HD and 2015 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
| Possible Causes |
|---|
| POWERTRAIN CONTROL MODULE (PCM) HAS AN OUTDATED FLASH UPDATE |
| DEGRADED, DILUTED OR INCORRECT DIESEL EXHAUST FLUID |
| DIESEL EXHAUST FLUID DEPOSITS IN THE DECOMPOSITION TUBE |
| EXHAUST SYSTEM LEAKS |
| MALFUNCTIONING DEF DOSING SYSTEM |
| DEFECTIVE SCR CATALYST |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE - 6.7L .