DTC P1571 Reference Code Incompatibility: DTC Detecting Condition

WARNING: This page is about a different car, the 2011 Subaru Tribeca. However, it is still accessible from the selected car via links, so may be relevant.

Reference code incompatibility between body integrated unit and ECM

DIAGNOSIS PROCEDURE

Step	Check	Yes	No
1 PERFORM REGISTRATION ON IGNITION KEY. Perform registration on all keys of the vehicle. Refer to SUBARU SELECT MONITOR .	Is registration for all keys complete?	END	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)". Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . Execute the registration procedure next. Refer to SUBARU SELECT MONITOR .	Replace the ECM. Ref. to ENGINE CONTROL MODULE (ECM) . Body integrated unit. Ref. to BODY INTEGRATED UNIT . and replace all the ignition keys (including transponder). Execute the registration procedure next. Refer to SUBARU SELECT MONITOR .