Possible Causes
WARNING: This page is about a different car, the 2015 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
| Possible Causes |
|---|
| OTHER SCR, REDUCTANT, OR NOX DTCS PRESENT |
| DEF CONTAMINATION |
| DEF SUPPLY LINE RESTRICTION |
| SCR CATALYST |
| DEF INJECTOR |
| DEF SUPPLY PUMP |
| SCR HEALING PROCEDURE REQUIRED (TEST STEP 7) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .