DTC P1571 Reference Code Incompatibility: DTC Detecting Condition

Reference code incompatibility between body integrated unit and ECM

DIAGNOSIS PROCEDURE CHART

Step	Check	Yes	No
1 PERFORM REGISTRATION ON IGNITION KEY . Perform registration on all keys of the vehicle. Refer to the PC application help for 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)". Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . Execute the registration procedure next. Refer to the PC application help for Subaru Select Monitor.	Replace the ECM. Refer to ENGINE CONTROL MODULE (ECM) . Replace the body integrated unit Refer to BODY INTEGRATED UNIT . and replace all the ignition keys (including transponder). Execute the registration procedure next. Refer to the PC application help for Subaru Select Monitor.