Diagnostic Trouble Code (DTC) Information
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.
Condition
Diagnostic trouble code (DTC) ECC-420 is stored if there is a fault in the internal control module memory circuits. Diagnostic trouble code (DTC) ECC-421 is stored if there is a fault in the ROM memory circuits.
Substitute Value
None.
Possible Source
- Defective control module.
Fault symptom[s]
- The orange indicator LED in the REC and air conditioning (A/C) buttons flashes for approximately 20 seconds.