About Trouble Codes

NOTE:
- The DTC table is listed according to the 5-digit DTC on the left
- Explanation of the DTC types (e.g. "open circuit/short circuit to ground"): See Scan tool operating instructions.
- Before replacing components indicated as being faulty check the wiring and connectors to these components as well as the ground connections according to the wiring diagram. This is particularly relevant if DTCs are output as "occurring sporadically" (SP).
- The DTCs displayed can be localized using the table.
- The malfunction "no communication" can appear with the door control modules. This has no influence on the function of the comfort system and is therefore of no consequence. Erase DTC memory

Scan tool print-out (example):

01333 049
Door CU J388
no communication

The number shown in bold, 049, has no relevance.