Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

Lighting System (for HV Model with Cornering Light)

DTC No.

Detection Item

DTC Output from

Link

B1244

Light Sensor Circuit

Main body ECU (multiplex network body ECU)

B124B

Automatic High Beam System

Main body ECU (multiplex network body ECU)

B124C

Automatic High Beam Camera

Main body ECU (multiplex network body ECU)

B2414

Steering Position Sensor

Headlight ECU sub-assembly LH

B2415

Vehicle Speed Sensor

Headlight ECU sub-assembly LH

B242C

Right Headlight ECU Malfunction

Headlight ECU sub-assembly RH

B242D

Left Headlight ECU Malfunction

Headlight ECU sub-assembly LH

B242E

Open in IG Circuit

Headlight ECU sub-assembly LH

B242E

Open in IG Circuit

Headlight ECU sub-assembly RH

B242F

Open in B Power Line

Headlight ECU sub-assembly LH

B242F

Open in B Power Line

Headlight ECU sub-assembly RH

B2439

Headlight LH Circuit

Headlight ECU sub-assembly LH

B243A

Headlight RH Circuit

Headlight ECU sub-assembly RH

B243D

Left Low Beam Fan Malfunction

Headlight ECU sub-assembly LH

B243E

Right Low Beam Fan Malfunction

Headlight ECU sub-assembly RH

B2451

Variation Code not Written

Headlight ECU sub-assembly LH

B2456

Left Headlight ECU Variation Error

Headlight ECU sub-assembly LH

U0073

Control Module Communication Bus Off

Headlight ECU sub-assembly LH

U0073

Control Module Communication Bus OFF

Headlight ECU sub-assembly RH

U0100

Lost Communication With ECM/PCM "A"

Main body ECU (multiplex network body ECU)

U0101

Lost Communication with TCM

Headlight ECU sub-assembly LH

U0101

Lost Communication with TCM

Main body ECU (multiplex network body ECU)

U0120

Lost Communication With Starter / Generator Control Module

Main body ECU (multiplex network body ECU)

U0126

Lost Communication with Steering Angle Sensor Module

Headlight ECU sub-assembly LH

U0126

Lost Communication with Steering Angle Sensor Module

Main body ECU (multiplex network body ECU)

U0126

Lost Communication with Steering Angle Sensor Module

Headlight ECU sub-assembly RH

U0129

Lost Communication with Brake System Control Module

Headlight ECU sub-assembly LH

U0129

Lost Communication with Brake System Control Module

Main body ECU (multiplex network body ECU)

U0142

Lost Communication with Body Control Module "B"

Headlight ECU sub-assembly LH

U0142

Lost Communication with Body Control Module "B"

Headlight ECU sub-assembly RH

U0151

Lost Communication with Restraints Control Module

Main body ECU (multiplex network body ECU)

U0155

Lost Communication with Instrument Panel Cluster (IPC) Control Module

Headlight ECU sub-assembly LH

U0155

Lost Communication with Instrument Panel Cluster (IPC) Control Module

Main body ECU (multiplex network body ECU)

U0155

Lost Communication with Instrument Panel Cluster (IPC) Control Module

Headlight ECU sub-assembly RH

U0163

Lost Communication with Navigation Control Module

Main body ECU (multiplex network body ECU)

U0164

Lost Communication with HVAC Control Module

Main body ECU (multiplex network body ECU)

U0182

Lost Communication with AFS

Main body ECU (multiplex network body ECU)

U0182

Lost Communication With Lighting Control Module Front

Headlight ECU sub-assembly RH

U0199

Lost Communication with "Door Control Module A"

Main body ECU (multiplex network body ECU)

U0200

Lost Communication with "Door Control Module B"

Main body ECU (multiplex network body ECU)

U0208

Lost Communication with "Seat Control Module A"

Main body ECU (multiplex network body ECU)

U023A

Lost Communication With Image Processing Module "A"

Main body ECU (multiplex network body ECU)

U0242

Lost Communication With Headlamp Control Module "B"

Headlight ECU sub-assembly LH

U0293

Lost Communication with Hybrid Vehicle Control System

Headlight ECU sub-assembly LH

U0293

Lost Communication With Hybrid Powertrain Control Module

Main body ECU (multiplex network body ECU)

U0327

Software Incompatibility with Vehicle Security Control Module

Main body ECU (multiplex network body ECU)

U1000

CAN Communication Failure (Message Registry)

Headlight ECU sub-assembly LH

U1000

CAN Communication Failure (Message Registry)

Headlight ECU sub-assembly RH

U1106

Lost Communication with Electric Parking Brake Module

Main body ECU (multiplex network body ECU)

U1115

Lost Communication with Tilt & Telescopic Module

Main body ECU (multiplex network body ECU)

U1117

Lost Communication with Accessory Gateway

Main body ECU (multiplex network body ECU)

    Data List / Active Test

    Dtc Check / Clear

    See More:

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Intuitive Parking Assist System(for Gasoline Model): Rear Right Sensor Malfunction (C1AE9)
    DESCRIPTION The rear corner ultrasonic sensor RH is installed to the rear bumper. The clearance warning ECU assembly detects obstacles based on signals received from the rear corner ultrasonic sensor RH. If the rear corner ultrasonic sensor RH has an open circuit or other malfunction, it will not fu ...

    Toyota Avalon (XX50) 2019-2022 Owners Manual

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual

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