Subaru Legacy BN/BS (2015-2019) Service Manual: List of diagnostic trouble code (dtc) list

Subaru Legacy BN/BS (2015-2019) Service Manual / Lan system (diagnostics) / List of diagnostic trouble code (dtc) list

1. CHECK USING THE DTC CHECK SHEET

• DTC check sheet for data non-arrival detection

(A)	Installation check	ECM: Engine CM	BIU: Body integrated unit
(B)	Bus off detection	VDC: VDC CM	AHL: Auto headlight beam leveler CM
		EPS: Power steering CM	SRF: Steering responsive fog light CM
		TCM: Transmission CM	RES: Remote engine starter CM
		RDR: Radar sensor	AVN: Audio or navigation unit
		A/C: Air conditioner CM	IMB: Immobilizer CM
		A/B: Airbag CM	KPS: Keyless access CM
		STA: Steering angle sensor	IMP: Impact sensor
		EYE: Stereo camera	MET: Combination meter
		SUN: Sunroof	SEAT: Power seat CM (with memory)
		EPB: Electronic parking brake (VDC CM)	ACT: Active grille shutter
		PRG: Power rear gate CM	BAT: Battery sensor
		DCM: Data communication module

• DTC check sheet for error detection

(A)	Installation check	ECM: Engine CM	BIU: Body integrated unit
		VDC: VDC CM	AHL: Auto headlight beam leveler CM
		EPS: Power steering CM	SRF: Steering responsive fog light CM
		TCM: Transmission CM	RES: Remote engine starter CM
		RDR: Radar sensor	AVN: Audio or navigation unit
		A/C: Air conditioner CM	IMB: Immobilizer CM
		A/B: Airbag CM	KPS: Keyless access CM
		STA: Steering angle sensor	IMP: Impact sensor
		EYE: Stereo camera	MET: Combination meter
		EPB: Electronic parking brake (VDC CM)	KEY: Keyless entry CM
		DCM: Data communication module

1. Module installation check

(1) Write “-” marks in the field for installation check if the vehicle to be inspected does not have relevant module.

(2) Write “-” marks in all blank fields on the same row that the “-” mark has filled in.

2. Bus off detection / data not received

NOTE:

It becomes impossible for CAN diagnostic module to read DTC, if there is a current malfunction of open harness (data not received). If this occurs, perform the “Check using the check sheet of communication for initializing” Subaru Select Monitor > COMMUNICATION FOR INITIALIZING IMPOSSIBLE, and use this sheet to confirm that the corresponding part becomes the past malfunction.

(1) Mark “X” in the field corresponding to the DTCs that has been detected by each module in the check sheet.

(2) Identify and repair the faulty part by referring to the example of DTC data not received. List of Diagnostic Trouble Code (DTC) > LIST

3. Data abnormal detection

NOTE:

If any “BUS OFF” or “NO-RECEIVE DATA” condition is detected, perform the diagnosis for these problems first.

(1) If several modules detect the DTC for the same module, replace the detected module.

(2) If one module detects the DTC, replace the module of the detected side.

(3) If it does not return to the normal operation, re-install the module which has been replaced, and replace the module of the detected side.

(4) If it does not return to the normal operation, replace both modules.

2. EXAMPLE OF DTC DATA NOT RECEIVED

• Vicinity of No. 18 steering angle sensor

• Vicinity of No. 24 DCM (BODY CAN)

General diagnostic table inspection

ItemOperationSpecificationsNoteYESNODiagnostic trouble codeDTC is displayed when inspecting all DTCs.Perform the diagnosis according to DTC.System is normal. — SpeedometerFaster vehicle speed than t ...

Read diagnostic trouble code (dtc) operation

1. On «Start» display, select «Diagnosis».2. On «Vehicle selection» display, input the target vehicle information and select «Confirmed».3. On «Main Menu» display, select «All diagnosis cod ...

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