Possible Causes
WARNING: This page is about a different variant/trim than selected.
| Possible Causes |
|---|
| DEF LINE HEATER SUPPLY CIRCUIT SHORT TO GROUND |
| DEF LINE HEATER ASSEMBLY |
| DEF HEATER CONTROL UNIT (HCU) |
Always perform the Pre-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .