Diagnostic Trouble Codes (DTCS)

A diagnostic trouble code (DTC) is stored if the control module detects a fault. The control module can store up to 8 diagnostic trouble codes (DTCs).

Diagnostic trouble codes (DTCs) for different types of short-circuit are only stored when there is no tow hitch connector connected to the socket. This is so that diagnostic trouble codes (DTCs) are not stored in the event of a fault in the trailer's cable harness or its connectors.

Should a fault disappear for any reason after being stored in the control module as a diagnostic trouble code (DTC), the information remains stored in the control module. If a fault is no longer permanent, the diagnostic trouble code (DTC) remains as intermittent.