LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2019 >> Tundra TRD Pro >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Smart Key System (For Start Function) - Diagnostic Codes & Symptom Tests) >> Smart Key System (For Start Function) [3UR-FE] >> DTC B2285: Steering Lock Position Signal Circuit Malfunction [08/2019 - ] >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC B2285: Steering Lock Position Signal Circuit Malfunction [08/2019 - ]: Description

WARNING: This page is about a different car, the 2021 Toyota Tundra and 2020 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

This DTC is stored when the steering lock position signal sent by the steering lock ECU (upper steering column with switch bracket assembly) via direct line and the steering lock position signal sent via LIN communication do not match.

DTC No. Detection Item DTC Detection Condition Trouble Area Note
B2285 Steering Lock Position Signal Circuit Malfunction The steering lock position signal sent by the steering lock ECU (upper steering column with switch bracket assembly) via direct line and the steering lock position signal sent via LIN communication do not match. (1-trip detection logic*)
  • LIN communication system
  • Steering lock ECU (upper steering column with switch bracket assembly)
  • Certification ECU (smart key ECU assembly)
  • Harness or connector
DTC Output Confirmation Operation: 
  1. Disconnect the cable from the negative (-) battery terminal, wait 30 seconds and then reconnect the cable to the negative (-) battery terminal. Wait at least 40 seconds with the engine switch off (wait is the steering locked), then turn the engine switch on (IG) (steering unlocked) and wait at least 40 seconds.
  1. *: Only detected while a malfunction is present.
VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED

Vehicle Condition when Malfunction Detected Fail-safe Function when Malfunction Detected
The engine cannot be started. The ECU does not send an engine start request.
RELATED DATA LIST AND ACTIVE TEST ITEMS

DTC No. Data List and Active Test
B2285 Power Source Control 
  1. Steering Unlock Switch

Smart Key 
  • Power Supply Short
  • Motor Driver Short
  • Lock Bar Stuck Error