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Diagnostic Trouble Code Chart: Notes

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to table below.

Pre-collision system 

DIAGNOSTIC TROUBLE CODE CHART

DTC Code Detection Item Trouble Area Output ECU (Tester Item)
B2000  Short to B+ in Seat Belt Motor RH Circuit
  • Front seat outer belt RH
  • Harness or connector
  • Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2001  Short to GND in Seat Belt Motor RH Circuit
  • Front seat outer belt RH
  • Harness or connector
  • Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2002  Open in Seat Belt Motor RH Circuit
  • Front seat outer belt RH
  • Harness or connector
  • Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2005  Short to B+ in Seat Belt Motor LH Circuit
  • Front seat outer belt LH
  • Harness or connector
  • Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2006  Short to GND in Seat Belt Motor LH Circuit
  • Front seat outer belt LH
  • Harness or connector
  • Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2007  Open in Seat Belt Motor LH Circuit
  • Front seat outer belt LH
  • Harness or connector
  • Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1 *2)
B2015  Open in Right Side Upper MOS Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2016  Open in Right Side Lower MOS Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2020  Open in Left Side Upper MOS Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2021  Open in Left Side Lower MOS Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2025  Right Side Current Detection Circuit Malfunction Hi Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2026  Right Side Current Detection Circuit Malfunction Lo Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2027  Right Side Over-Current Malfunction Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2030  Left Side Current Detection Circuit Malfunction Hi Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2031  Left Side Current Detection Circuit Malfunction Lo Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2032  Left Side Over-Current Malfunction Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2035  Power Supply Relay Adherence Malfunction Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2036  Power Supply Relay Malfunction Open Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2040  EEPROM Malfunction Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2041  Fall of Raised Voltage Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2043  Fall of B+ Voltage Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2047  Seat Belt Control ECU Inner Circuit Malfunction Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2060  ABS Malfunction
  • Electrically controlled brake system
  • CAN communication system
  • Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2064  Vehicle Type Signal Malfunction
  • Main body ECU
  • CAN communication system
  • Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2074  Driver Side Seat Belt Buckle Switch Circuit Malfunction
  • Front seat outer belt LH
  • Center airbag sensor
  • CAN communication system
  • Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2075  Passenger Side Seat Belt Buckle Switch Circuit Malfunction
  • Front seat outer belt RH
  • Center airbag sensor
  • Occupant classification ECU
  • CAN communication system
  • Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
B2090  Driving Support System Malfunction
  • Driving support system
  • Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
C1A01  Driving Support ECU Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A0A  Front Radar Sensor Region Code Mismatch
  • Front millimeter wave radar sensor
  • Combination meter
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A0C  Object Recognition Camera Region Code Mismatch
  • Object recognition ECU
  • Combination meter
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A10  Front Radar Sensor
  • Front millimeter wave radar sensor
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A11  Front Radar Sensor Incorrect Axial Gap
  • Front millimeter wave radar sensor
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A14  Front Radar Sensor Beam Axis Not Adjusted
  • Front millimeter wave radar sensor
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A20  Object Recognition ECU
  • Object recognition ECU
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A21  Object Recognition Camera
  • Object recognition camera
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A22  Object Recognition Camera Incorrect Axial Gap
  • Object recognition camera
  • Object recognition ECU
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A23  Object Recognition Camera Initialization Incomplete
  • Object recognition camera
  • Object recognition ECU
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A24  Object Recognition Camera Image cannot be Recognized
  • Windshield glass is dirty
  • Object recognition camera is dirty
  • Object recognition camera
  • Object recognition ECU
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A25  Object Recognition Camera Recognizing Distance Discrepancy
  • Object recognition camera
  • Object recognition ECU
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A26  Lost Communication with Gigabit Video Interface
  • Harness or connector
  • Object recognition camera
  • Object recognition ECU
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A30  Driver Monitor ECU
  • Driver monitor ECU
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A31  Driver Monitor Camera
  • Driver monitor camera
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A32  Driver Monitor Image cannot be Recognized
  • Driver monitor camera
  • Driver monitor ECU
  • CAN communication system
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A40  ENG / EHV Device
  • Hybrid control system
  • Hybrid vehicle control ECU
  • SFI system - ECM
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A41  Brake Request Value Mismatch between ENG / EHV and Driving Support ECU
  • Electronically controlled brake system
  • Hybrid control system
  • Hybrid vehicle control ECU
  • Skid control ECU
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A46  Yaw Rate Sensor
  • Yaw rate sensor
  • Skid control ECU
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A47  Steering Angle Sensor
  • Steering angle sensor
  • Skid control ECU
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A4A  Skid Control Buzzer Circuit
  • Skid control buzzer
  • Skid control buzzer circuit
  • Skid control ECU
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
C1A6A  Infrared Signal Circuit
  • Headlight (Lo beam)
  • Headlight (Near infrared ray filter)
  • Harness or connector
  • Object recognition ECU
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
U0122  Lost Communication with Vehicle Dynamics Control Module
  • Skid control ECU
  • CAN communication system
  • Seat belt control ECU
  • Driving support ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
U0123  Lost Communication with Yaw Rate Sensor Module
  • Yaw rate sensor
  • CAN communication system
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
U0126  Lost Communication with Steering Angle Sensor Module
  • Steering angle sensor
  • CAN communication system
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
U0140  Lost Communication with Main Body ECU
  • Main body ECU
  • CAN communication system
  • Seat belt control ECU
  • Driving support ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
U0151  Lost Communication with Airbag ECU
  • Center airbag sensor
  • CAN communication system
  • Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
U0235  Lost Communication with Cruise Control Front Distance Range Sensor
  • Front millimeter wave radar sensor
  • CAN communication system
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
U0293  Lost Communication with HV ECU
  • Hybrid vehicle control ECU
  • CAN communication system
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
U1104  Lost Communication with Driving Support ECU
  • Driving support ECU
  • CAN communication system
  • Front millimeter wave radar sensor
  • Object recognition ECU
  • Seat belt control ECU
  • Seat belt control ECU (PRE-COLLISION 1*1 or Pre-Collision 1*2)
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
U1119  Lost Communication with Object Recognition ECU
  • CAN communication system
  • Object recognition ECU
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
U1119  Lost Communication with Object Recognition ECU
  • Harness or connector
  • Object recognition ECU
  • Object recognition camera sensor
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
U1120  Lost Communication with Object Recognition Camera
  • Harness or connector
  • Object recognition ECU
  • Object recognition camera
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
U1121  Lost Communication with Driver Monitor ECU
  • Driver monitor ECU
  • CAN communication system
  • Driving support ECU
  • Driving support ECU (PRE-COLLISION 2*1 or Pre-Collision 2*2)
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