Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM1000000018H90
Model Year Start: 2018 Model: Sienna Prod Date Range: [11/2017 -           ]
Title: LIGHTING (EXT): LIGHTING SYSTEM: DIAGNOSTIC TROUBLE CODE CHART; 2018 - 2020 MY Sienna [11/2017 -        ]

DIAGNOSTIC TROUBLE CODE CHART

Lighting System

DTC Code

Detection Item

Trouble Area

See page

B1244

Light Sensor Circuit Malfunction

- Automatic light control sensor

- Harness or connector

- Main body ECU

2016 - 2020 MY Sienna [12/2015 -        ]; LIGHTING (EXT): LIGHTING SYSTEM: B1244; Light Sensor Circuit Malfunction

B124B

Automatic High Beam System

- Forward recognition camera system

- Pre-collision system

- SFI system

- Vehicle stability control system

- CAN communication system

- Forward recognition camera

- Main body ECU

2018 - 2020 MY Sienna [11/2017 -        ]; LIGHTING (EXT): LIGHTING SYSTEM: B124B; Automatic High Beam System

B124C

Automatic High Beam Camera

- Forward recognition camera system

2018 - 2020 MY Sienna [11/2017 -        ]; LIGHTING (EXT): LIGHTING SYSTEM: B124C; Automatic High Beam Camera

U0101

Lost Communication with ECM

- CAN communication system

2018 - 2020 MY Sienna [11/2017 -        ]; LIGHTING (EXT): LIGHTING SYSTEM: U0101,U0126,U0129,U0142,U023A; Lost Communication with ECM

U0126

Lost Communication with Steering Angle Sensor Module

- CAN communication system

2018 - 2020 MY Sienna [11/2017 -        ]; LIGHTING (EXT): LIGHTING SYSTEM: U0101,U0126,U0129,U0142,U023A; Lost Communication with ECM

U0129

Lost Communication with Skid Control ECU

- CAN communication system

2018 - 2020 MY Sienna [11/2017 -        ]; LIGHTING (EXT): LIGHTING SYSTEM: U0101,U0126,U0129,U0142,U023A; Lost Communication with ECM

U0142

Lost Communication with Main Body ECU

- CAN communication system

2018 - 2020 MY Sienna [11/2017 -        ]; LIGHTING (EXT): LIGHTING SYSTEM: U0101,U0126,U0129,U0142,U023A; Lost Communication with ECM

U023A

Lost Communication With Image Processing Module "A"

- CAN communication system

2018 - 2020 MY Sienna [11/2017 -        ]; LIGHTING (EXT): LIGHTING SYSTEM: U0101,U0126,U0129,U0142,U023A; Lost Communication with ECM