Inspection Mode 1

DTC	Description & trouble part	Note
U0074	CONTROL MODULE COMMUNICATION BUS "BODYCAN" OFF	-
U0100	Lost Communication With ECM/PCM "A"	-
U0101	Lost Communication With TCM	-
U0122	Lost Communication With Vehicle Dynamics Control Module	-
U0155	Lost Communication With Instrument Panel Cluster (IPC) Control Module	-
U0164	Lost Communication With HVAC Control Module	-
U0293	Lost Communication With Hybrid Powertrain Control Module	-
U0401	Invalid Data Received From ECM/PCM "A"	-
U0423	INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE	-
U1120	LOST COMMUNICATION WITH AUTOSTART STOP CONTROL MODULE	-
U1140	LOST COMMUNICATION WITH BODY CONTROL MODULE BODY-CAN	-
U1198	Lost Communication With Telematics System	-
U119B	Lost Communication With Battery Charger Control Module PU-CAN	-
U128F	Lost Communication With Hybrid Powertrain Control Module C-CAN	-
U1422	INVALID DATA RECEIVED FROM BODY CONTROL MODULE BODY-CAN	-
B2271	IGN relay control circuit	-
B2273	IGBD Relay Control Circuit	-
B2274	ACC relay control circuit	-
B2275	Engine start request control circuit	-
B2276	ACC relay off signal	-
B2277	Keyless access control module (water detection)	-
B227B	PUSH ENGINE START SWITCH INPUT PERFORMANCE	-
B227C	P RANGE SIGNAL PERFORMANCE	-
B2285	Steering lock position signal correlation	-
B2286	Engine speed signal (without Auto Start Stop)	-
B228A	ENGINE SPEED SIGNAL (WITH AUTO START STOP)	-
B2781	Steering Lock Control Module control circuit	-
B2782	Steering lock drive request signal correlation	-
B2785	LIN communication	-
B2786	Steering Lock Control Module communication	-
B2788	IGN signal correlation (Steering Lock Control Module)	-
B2789	ID Code Box communication	-
B278B	CAN CONTROL MODULE STUCK	-
B278D	ID Code Box judgment circuit	-
B2793	BACKUP POWER	-

Diagnostic procedure:

1. Check that the battery voltage is 12 V or more and fuel remains approx. half [20 - 40 L (5.3 - 10.6 US gal, 4.4 - 8.8 Imp gal)].
2. Using the Subaru Select Monitor, perform the clear memory of [Keyless Access with Push Button Start]. Ref. to COMMON (DIAG)>CLEAR MEMORY .
3. Using the Subaru Select Monitor, read the DTC of [Keyless Access with Push Button Start] to check that there is no DTC displayed. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
   NOTE:

   If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis for the displayed DTCs. After solving the DTC, repeat from step   1 . 

4. Start the engine, and let it idle for 40 seconds or more. (Except for hybrid model) Turn to READY ON and wait for five seconds or more. (Hybrid model)
5. Using the Subaru Select Monitor, read the DTC of [Keyless Access with Push Button Start] to check that there is no DTC displayed. Ref. to KEYLESS ACCESS WITH PUSH BUTTON START (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .