DTC B1571 Reference Code Incompatibility: DTC Detecting Condition
WARNING: This page is about a different car, the 2015 Subaru XV Crosstrek and 2015 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.
Incompatibility of reference code between keyless access control module (model without ID code box) or ID code box (model with ID code box) and ECM occurs.