Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2017 Subaru Forester 2.0XT PremiumFACTORY OEM SERVICE PROCEDURE

Multi-Function Display

MULTI-FUNCTION DISPLAY DIAGNOSTIC TROUBLE CODE IDENTIFICATION

DTC	Item	Content	Reference
B2223	GERDA MALFUNCTION	When the system microcomputer can not send/receive the data with the image microcomputer normally.	Ref. to MULTI-FUNCTION DISPLAY (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC B2223 GERDA MALFUNCTION .
U0073	CONTROL MODULE COMMUNICATION BUS OFF	Detected when CAN line abnormality is detected.	Ref. to MULTI-FUNCTION DISPLAY (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC) .
U1201	CAN-HS COUNTER ABNORMAL	Detected when CAN data is abnormal.	Ref. to MULTI-FUNCTION DISPLAY (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U1201 CAN-HS COUNTER ABNORMAL .
U1235	LOST COMMUNICATION WITH EyeSight	Detected when CAN data from the stereo camera does not arrive.	Ref. to MULTI-FUNCTION DISPLAY (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U1235 LOST COMMUNICATION WITH EyeSight .
U1650	INVALID DATA RECEIVED FROM METER (UART)	There is an abnormality in UART data from combination meter.	Ref. to MULTI-FUNCTION DISPLAY (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U1650 INVALID DATA RECEIVED FROM METER (UART) .
U1651	LOST COMMUNICATION WITH METER (UART)	UART data from combination meter is not received.	Ref. to MULTI-FUNCTION DISPLAY (DIAGNOSTICS)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC U1651 LOST COMMUNICATION WITH METER (UART) .

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.