DTC B1656: Radio EEPROM Write Error: Description

DTC B1656 testing is run for each write block of writes to EEPROM. Integrated Radio Controller (IRC) inside radio writes to EEPROM cell and then reads data back. DTC B1656 will set when data read by IRC does not match data written to EEPROM after 3 consecutive attempts. DTC B1656 will clear when data read by BCM matches data written to EEPROM or when scan tool is used. A history DTC will clear after 50 consecutive ignition cycles if conditions for fault no longer exist.