Home18-230-26 · SUBARU
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).

NHTSA manufacturer communications ↗

Reported code forms

B1571B1572

Manufacturer wording

Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.

SubaruB1571
REFERENCE CODE INCOMPATIBILITY IMMOBILIZER CM TO ECM

NHTSA 11033051

Check vehicle applicability

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

MakeModelModel year
SubaruASCENT2026
SubaruASCENT2025
SubaruASCENT2024
SubaruASCENT2023
SubaruASCENT2022
SubaruASCENT2021
SubaruASCENT2020
SubaruASCENT2019
SubaruBRZ2026
SubaruBRZ2025
SubaruBRZ2024
SubaruBRZ2023
SubaruBRZ2022
SubaruCROSSTREK2026
SubaruCROSSTREK2025
SubaruCROSSTREK2024
SubaruCROSSTREK2023
SubaruCROSSTREK2022
SubaruCROSSTREK2021
SubaruCROSSTREK2020
SubaruCROSSTREK2019
SubaruCROSSTREK2018
SubaruCROSSTREK2017
SubaruCROSSTREK2016
SubaruFORESTER2026
SubaruFORESTER2025
SubaruFORESTER2024
SubaruFORESTER2023
SubaruFORESTER2022
SubaruFORESTER2021

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