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Home >> Volvo >> 2004 >> V40 LSE >> Repair and Diagnosis >> Electrical >> Body Electrical >> Central Electronic Module (CEM) - Design And Function >> Central Electronic Module (CEM) (2000-2004) >> Diagnostic functions >> Diagnostic trouble codes (DTCs)
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Diagnostic trouble codes (DTCs)

The control module will store a diagnostic trouble code (DTC) if it detects a fault. The control module can store 20 diagnostic trouble codes (DTCs).

If a fault disappears for any reason after the diagnostic trouble code (DTC) has been permanently stored in the control module, information about the fault remains in the control module.

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