U1102 - CHRYSLER: INVALID OR MISSING SCP DATA FOR MAIN ID.
U1102 - DODGE: INVALID OR MISSING SCP DATA FOR MAIN ID.
U1102 - JEEP: INVALID OR MISSING SCP DATA FOR MAIN ID.
POST UPDATED IN May, 2023
U1102 - CHRYSLER: INVALID OR MISSING SCP DATA FOR MAIN ID.
U1102 - DODGE: INVALID OR MISSING SCP DATA FOR MAIN ID.
U1102 - JEEP: INVALID OR MISSING SCP DATA FOR MAIN ID.
The vehicle controllers communicate through the Serial Communication Protocol (SCP), which is known as the J1850 bus, or CAN (Control Area Network) bus. These communication systems can be fault-tolerant but usually are not, indicating that an intermittent or loose connection can cause communication between the controllers to be interrupted.
The U1102 OBDII fault code setting is due to the PCM (Powertrain Control Module) not being able to establish communication with another controller on the CAN bus while the power switch is on.
The factors for which the U1102 OBD2 diagnostic code is stored are:
To give the respective solution to the DTC U1102 OBDII code you should take into account the following: