Faulty Relay Control Module
Relay Control Module harness is open or shorted
Relay Control Module circuit poor electrical connection
Faulty Rear Multiplex Integrated Control Unit (MICU)
Engine Light ON (or Service Engine Soon Warning Light)
The Diagnostic Trouble Code (DTC) sets when a communication malfunction was detected between the Relay Control Module and the Rear Multiplex Integrated Control Unit (MICU).