DTC B0605: Receiver Internal Memory Malfunction: Description

RFA system calibrations are stored in EEPROM. When ignition is first turned on, receiver performs internal tests on EEPROM and can determine integrity of EEPROM's non-volatile memory. Receiver compares its previously stored checksum with checksum calculated when ignition is first turned on. If 2 checksums do not match, receiver will indicate a calibration malfunction (checksum error) is current.

DTC B0605 will set and store in memory if stored checksum does not match calculated checksum or receiver detects an internal memory malfunction (checksum error). This condition must occur when ignition is first turned on. SERVICE TIRE WARN SYS will be displayed on Driver's Information Center (DIC). All remote control functions will disable.

Under all fault conditions, DTC B0605 requires an ignition cycle from LOCK/OFF to RUN position before DTC will clear. If conditions for malfunction no longer exist, history DTC will clear after 50 consecutive ignition cycles. DTC B0605 will also clear when conditions no longer exist or when scan tool is used to clear codes.