Possible Causes
WARNING: This page is about a different car, the 2016 RAM 3500 HD and 2016 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
| Possible Causes |
|---|
| DIESEL EXHAUST FLUID LEVEL LOW |
| EXHAUST SYSTEM LEAK |
| DIESEL EXHAUST FLUID (DEF) DEPOSITS IN DECOMPOSITION TUBE |
| SELECTIVE CATALYTIC REDUCTION (SCR) CATALYST |
| DEF DEGRADED, DILUTED, OR INCORRECT DEF |
| DEF QUALITY SENSOR |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE - 6.7L .