DTC 42: Last Message Received Invalid: Description

Digital Radio Frequency (RF) message received was from a Remote Keyless Entry (RKE) transmitter not programmed to Body Control Module (BCM). RKE transmitter function capabilities will not exist.

DTC 42 will set when RKE transmitter was used without programming it to BCM. If RKE transmitter was already programmed, RKE transmitter may be defective. DTC 42 will also set if another RKE transmitter was operated in the same area.

BCM should be placed in RKE system programming mode. All RKE transmitters must be programmed to BCM during same programming mode cycle. See REMOTE KEYLESS ENTRY (RKE) TRANSMITTER PROGRAMMING  under PROGRAMMING.