SUBARU
18-230-26
Manufacturer communications
- Publication date
- 2026-05-01
- Received by NHTSA
- 2026-06-01
- NHTSA record numbers
- 11033051
Manufacturer summary
Original wording in English
This bulletin announces the diagnostic procedures to be used when DTCs B1571(REFERENCE CODE INCOMPATIBILITY IMMOBILIZER CM TO ECM) and B1572(IMM CIRCUIT EXCEPT ANTENNA CIRCUIT) are detected by Keyless Access with Push Button Start(KACM).
Reported code forms
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
Subaru
B1571REFERENCE CODE INCOMPATIBILITY IMMOBILIZER CM TO ECMSubaru
B1572IMM CIRCUIT EXCEPT ANTENNA CIRCUITCheck vehicle applicability
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.