About Trouble Codes

Diagnostic Trouble Code (DTC) Table


NOTE:
- The DTC table is listed according to the 5 digit DTC on the left.
- Explanation of the malfunction types (e.g. "open circuit / short circuit to Ground"):
- Before replacing components indicated as being inoperative, check the wiring and connectors to these components as well as the Ground connections using wiring diagram. This is particularly relevant if DTCs are output as "occurring sporadically" (SP).
- The DTCs displayed can be localized using the test table.
- This DTC "no communication" can also 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 printout: the number shown here in bold 049 (e.g.) has no relevance.


01333 049
Door CU - J388
No communication