Diagnostic Trouble Codes (DTCS) And Status

If the control module detects a fault, a diagnostic trouble code (DTC) is stored. However the control module continues to run the system in fail-safe mode,

The status is displayed for a given diagnostic trouble code (DTC) if it is permanent or intermittent.

A fault that was detected during the last run diagnostic is defined as permanent if the current diagnostic is carried out during the ongoing operating cycle. Other faults are defined as intermittent.

The Suspension module (SUM) defines an operating cycle as ignition on and ignition off.