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Home >> Volvo >> 2003 >> C70 2.3 53, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 98 (Ignition And Control Systems - Design And Function (Coupe)) >> Diagnostic Functions Me 7 (B5234T3; 1999-2002) >> Overview >> Diagnostic Trouble Code (DTC) Memory

Diagnostic Trouble Code (DTC) Memory

WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

When the engine control module (ECM) detects a fault, the diagnostic trouble code (DTC) is stored with the qualifier and status in the unit DTC memory. For certain types of diagnostic trouble codes (DTCs) the missing signal is replaced with a substitute value so that the system can continue to operate.

If the fault disappears, the diagnostic trouble code (DTC) will be present for a longer time in the diagnostic trouble code (DTC) memory although the status of the code will have changed.

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