Diagnostic trouble code (DTC) information

IMM-112 Control module 

Condition 

Fig 1: Identifying Immobilizer Control Module

Courtesy of VOLVO CARS OF NORTH AMERICA.

The control module checks the EEPROM memory circuit when certain entries are made to EEPROM memory. Diagnostic trouble code (DTC) IMM-112 is stored if there are any faults in the memory circuit. Faults which cause diagnostic trouble code (DTC) IMM-112 to be stored can also cause diagnostic trouble code (DTC) IMM-121 to be stored.

Possible Source 

• Fault in the control module memory circuit.

Fault symptom[s] 

• The indicator lamp in the combined instrument panel is lit.