P1613 HYUNDAI MIL Request Signal Circuit High Input

Tech notes
P1613 indicates that there one of the control module have requested the Engine Control Module (ECM) to turn ON the check engine lamp. Usually the P1613 code is combine with another code.
P1613 HYUNDAI Description
The Engine Control Module (ECM) is in constant communication with the other control units (e.g. Transmission, Body, etc). When there is a problem with a system other than the engine control, the ECM is requested to turn the engine light ON and set the P1613 code.
HYUNDAI Technical Service Bulletins for P1613 code
2000 HYUNDAI ACCENT FUEL SYSTEM, GASOLINE
1997 HYUNDAI TIBURON POWER TRAIN:AXLE ASSEMBLY
1998 HYUNDAI TIBURON POWER TRAIN:AXLE ASSEMBLY
1999 HYUNDAI TIBURON POWER TRAIN:AXLE ASSEMBLY
1996 HYUNDAI ACCENT POWER TRAIN:AXLE ASSEMBLY
1997 HYUNDAI ACCENT POWER TRAIN:AXLE ASSEMBLY
1998 HYUNDAI ACCENT POWER TRAIN:AXLE ASSEMBLY
1996 HYUNDAI ELANTRA POWER TRAIN:AXLE ASSEMBLY
1997 HYUNDAI ELANTRA POWER TRAIN:AXLE ASSEMBLY
1998 HYUNDAI ELANTRA POWER TRAIN:AXLE ASSEMBLY