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Home >> Volvo >> 2008 >> XC70 >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control Systems >> Electrical Modules And Components - Design And Function - 1 Of 5 >> Central Electronic Module (CEM) (2008-2012) >> Diagnostic Functions >> Diagnostic Trouble Codes (DTCS)
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Diagnostic Trouble Codes (DTCS)

If the control module detects a fault, a diagnostic trouble code is generated. The control module can store up to 10 trouble codes. A fault that is detected during the most recent operating cycle is defined as permanent. Other faults that are detected are defined as intermittent.