2016 Subaru BRZ Series.HyperBlueFACTORY OEM SERVICE PROCEDURE

Keyless Start

ENTRY & START SYSTEM START SYSTEM (KEYLESS START) DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Code Description
B2271 [IGN fuse blown-out or IGN circuit failure]
B2274 [ACC circuit abnormal]
B2275 [STSW circuit abnormal]
B2276 [ACCR signal abnormal]
B2277 [Submerging circuit abnormal]
B2282 [Vehicle speed signal abnormal]
B2283 [Vehicle speed sensor fault detection]
B2284 [Brake Signal (Cable-Information does not match to BEAN-Information)]
B2285 [Steering lock position signal abnormal]
B2286 [Run able Signal (Cable-Information does not match to BEAN-Information)]
U0073 [Control Module Communication Bus "A" Off]
U0100 [Lost Communication With ECM/PCM "A"]
U0101 [Lost Communication With TCM]
U0122 [Lost Communication With Vehicle Dynamics Control Module]
U0140 [Lost Communication With Body Control Module]
U0155 [Lost Communication With Instrument Panel Cluster (IPC) Control Module]
U0401 [Invalid Data Received From ECM/PCM "A"]
U0422 [Invalid Data Received From Body Control Module]
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.