2023 Subaru WRX Base, Automatic CVT TransFACTORY OEM SERVICE PROCEDURE

Telematics System DTCS

TELEMATICS SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

DTC Description Reference
B2A00 VIN READING Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A00 VIN READING .
B2A01 LTE1 ANTENNA CIRCUIT Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A01 LTE1 ANTENNA CIRCUIT .
B2A02 LTE2 ANTENNA CIRCUIT Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A02 LTE2 ANTENNA CIRCUIT .
B2A03 GPS ANTENNA CIRCUIT Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A03 GPS ANTENNA CIRCUIT .
B2A04 MIC CIRCUIT Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A04 MIC CIRCUIT .
B2A05 LEFT SPEAKER/AUDIO CIRCUIT Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A05 LEFT SPEAKER/AUDIO CIRCUIT .
B2A06 RIGHT SPEAKER/AUDIO CIRCUIT Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A06 RIGHT SPEAKER/AUDIO CIRCUIT .
B2A07 BACKUP BATTERY CHARGE SYSTEM PERFORMANCE Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A07 BACKUP BATTERY CHARGE SYSTEM PERFORMANCE .
B2A08 SOS BUTTON CIRCUIT Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A08 SOS BUTTON CIRCUIT .
B2A09 I-CALL BUTTON CIRCUIT Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A09 I-CALL BUTTON CIRCUIT .
B2A0A RED LED CIRCUIT Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A0A RED LED CIRCUIT .
B2A0B GREEN LED CIRCUIT Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A0B GREEN LED CIRCUIT .
B2A0C DCM PERFORMANCE Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A0C DCM PERFORMANCE .
B2A0D AIRBAG SIGNAL PERFORMANCE Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A0D AIRBAG SIGNAL PERFORMANCE .
B2A0E MUTE LINE CIRCUIT Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A0E MUTE LINE CIRCUIT .
B2A0F BACKUP BATTERY DEGRADATION Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A0F BACKUP BATTERY DEGRADATION .
B2A10 BATTERY VOLTAGE HIGH Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A10 BATTERY VOLTAGE HIGH .
B2A14 WIFI CHIPSET Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A14 WIFI CHIPSET .
B2A16 IMMOBILIZER KEY COLLATION Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B2A16 IMMOBILIZER KEY COLLATION .
U007C CONTROL MODULE COMMUNICATION BUS "J" OFF Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC U007C CONTROL MODULE COMMUNICATION BUS "J" OFF .
U0100 LOST COMMUNICATION WITH ECM/PCM "A" Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC U0100 LOST COMMUNICATION WITH ECM/PCM "A" .
U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE .
U0140 LOST COMMUNICATION WITH BODY CONTROL MODULE Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC U0140 LOST COMMUNICATION WITH BODY CONTROL MODULE .
U0151 LOST COMMUNICATION WITH RESTRAINTS CONTROL MODULE Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC U0151 LOST COMMUNICATION WITH RESTRAINTS CONTROL MODULE .
U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE .
U114E LOST COMMUNICATION WITH GATEWAY "A" SS-BUS Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC U114E LOST COMMUNICATION WITH GATEWAY "A" SS-BUS .
U115B LOST COMMUNICATION WITH RESTRAINTS CONTROL MODULE LOCAL BUS Ref. to TELEMATICS SYSTEM (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC U115B LOST COMMUNICATION WITH RESTRAINTS CONTROL MODULE LOCAL BUS .
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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.
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