Subaru 2009 IMPREZA Service Manual page 1743

Diagnostic Trouble Code (DTC) Detecting Criteria
CB:DTC P0513 INCORRECT IMMOBILIZER KEY
1. OUTLINE OF DIAGNOSIS
DTC
P0513 Incorrect Immobilizer Key
P1570 Antenna
P1571 Reference Code Incompatibility
P1572 IMM Circuit Failure
(Except Antenna Circuit)
P1574 Key Communication Failure
P1576 EGI Control Module EEPROM
P1577 IMM Control Module EEPROM
P1578 Meter Failure
2. ENABLE CONDITION
When starting the engine.
3. GENERAL DRIVING CYCLE
Perform the diagnosis only after starting the engine.
4. DIAGNOSTIC METHOD
Judge as NG when the conditions for the outline of the diagnosis of the top are established.
Item
Incorrect immobilizer key (Use of unregistered key in body integrated unit)
Faulty antenna
Reference code incompatibility between body integrated unit and ECM
Communication failure between body integrated unit and ECM
Failure of body integrated unit to verify key (transponder) ID code or tran-
sponder failure
ECM malfunctioning
Body integrated unit malfunctioning
Reference code incompatibility between body integrated unit and combina-
tion meter
GD(H4DOTC)-155
GENERAL DESCRIPTION
Outline of diagnosis