DTC P1571 Reference Code Incompatibility: DTC Detecting Condition

WARNING: This page is about a different car, the 2012 Subaru Outback and 2012 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.

Reference code incompatibility between body integrated unit and ECM

Step	Check	Yes	No
1 PERFORM REGISTRATION ON IGNITION KEY. Perform registration on all keys of the vehicle. Refer to the appropriate "PC application help for Subaru Select Monitor".	Is registration for all keys complete?	Finish the diagnosis.	Go to step 2.
2 CHECK FOR ANY OTHER DTC ON DISPLAY.	Is any other immobilizer DTC displayed?	Check the appropriate DTC using the "List of Diagnostic Trouble Code (DTC)". Refer to , LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . Execute the registration procedure next. Refer to the appropriate "PC application help for Subaru Select Monitor".	Replace the ECM. Refer to ENGINE CONTROL MODULE (ECM) . Refer to ENGINE CONTROL MODULE (ECM) . Replace the body integrated unit. Refer to BODY INTEGRATED UNIT . Replace and register all ignition keys (transponders). Refer to the appropriate "PC application help for Subaru Select Monitor".