Possible Causes
WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
| Possible Causes |
|---|
| DEF SYSTEM LEAKS |
| POOR QUALITY DEF FLUID |
| CRYSTALLIZATION IN THE DECOMPOSITION TUBE |
| SCR CATALYST ERROR |
| AMMONIA SENSOR |
| DEF INJECTOR |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to STANDARD PROCEDURE .