2019 Subaru Ascent BaseFACTORY OEM SERVICE PROCEDURE

Infotainment System DTCS

Code Reference
B2240 Ref. to INFOTAINMENT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2240 CAN COMMUNICATION (AUDIO) STUCK .
B2241 Ref. to INFOTAINMENT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2241 CAN COMMUNICATION .
B2244 Ref. to INFOTAINMENT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2244 AMPLIFIER COMMUNICATION .
B2247 Ref. to INFOTAINMENT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2247 CD MECHANICAL .
B2249 Ref. to INFOTAINMENT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2249 BLUETOOTH MODULE .
B224A Ref. to INFOTAINMENT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B224A BACKUP CAMERA .
B224B Ref. to INFOTAINMENT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B224B RADIO ANTENNA FAULTS (SHORTED OR OPEN) .
B224C Ref. to INFOTAINMENT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B224C DIVERSITY (FM2) RADIO ANTENNA FAULT (SHORTED OR OPEN) .
B224D Ref. to INFOTAINMENT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B224D XM/SATELLITE DIGITAL AUDIO RADIO SERVICE ANTENNA FAULTS (SHORTED OR OPEN) .
B2250 Ref. to INFOTAINMENT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2250 USB-BOX OVERCURRENT FAULTS .
B2251 Ref. to INFOTAINMENT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2251 SPEAKER LINE SHORTS TO +B .
B2252 Ref. to INFOTAINMENT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2252 SPEAKER LINE SHORTS TO GND .
B2253 Ref. to INFOTAINMENT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2253 DAMAGING A COIL DUE TO THE ELECTRIC CURRENT TO THE SPEAKER COIL .
B2254 Ref. to INFOTAINMENT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2254 GPS ANTENNA FAULTS .
B2255 Ref. to INFOTAINMENT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2255 USB2 (DCM) FAULTS .
U0074 Ref. to INFOTAINMENT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC U0074 CONTROL MODULE COMMUNICATION BUS "BODY-CAN" OFF .
U0122 Ref. to INFOTAINMENT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE .
U0155 Ref. to INFOTAINMENT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE .
U1140 Ref. to INFOTAINMENT (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC U1140 LOST COMMUNICATION WITH BODY CONTROL MODULE BODY-CAN .
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:

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

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