LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2012 >> Prius Plug-in >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Pre-Collision System (Plug-In) (Diagnostics - Introduction) >> Pre-Collision System >> Diagnostic Trouble Code Chart >> Diagnostic Trouble Code Chart
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Trouble Code Chart

PRE-COLLISION SYSTEM

DTC Code Detection Item See
B2000 Short to B+ in Seat Belt Motor RH Circuit Refer to DTC B2000: Short to B+ in Seat Belt Motor RH Circuit
B2001 Short to GND in Seat Belt Motor RH Circuit Refer to DTC B2001: Short to GND in Seat Belt Motor RH Circuit
B2002 Open in Seat Belt Motor RH Circuit Refer to DTC B2002: Open in Seat Belt Motor RH Circuit
B2005 Short to B+ in Seat Belt Motor LH Circuit Refer to DTC B2005: Short to B+ in Seat Belt Motor LH Circuit
B2006 Short to GND in Seat Belt Motor LH Circuit Refer to DTC B2006: Short to GND in Seat Belt Motor LH Circuit
B2007 Open in Seat Belt Motor LH Circuit Refer to DTC B2007: Open in Seat Belt Motor LH Circuit
B2015 Open in Right Side Upper MOS Refer to DTC B2015: Open in Right Side Upper MOS; DTC B2016: Open in Right Side Lower MOS; DTC B2020: Open in Left Side Upper MOS; DTC B2021: Open in Left Side Lower MOS; DTC B2025: Right Side Current Detection Circuit Malfunction Hi; DTC B2026: Right Side Current Detection Circuit Malfunction Lo; DTC B2027: Right Side Over-Current Malfunction; DTC B2030: Left Side Current Detection Circuit Malfunction Hi; DTC B2031: Left Side Current Detection Circuit Malfunction Lo; DTC B2032: Left Side Over-Current Malfunction; DTC B2035: Power Supply Relay Adherence Malfunction; DTC B2040: EEPROM Malfunction; DTC B2041: Fall of Raised Voltage; DTC B2043: Fall of B+ Voltage; DTC B2047: Seat Belt Control ECU Inner Circuit Malfunction
B2016 Open in Right Side Lower MOS Refer to DTC B2015: Open in Right Side Upper MOS; DTC B2016: Open in Right Side Lower MOS; DTC B2020: Open in Left Side Upper MOS; DTC B2021: Open in Left Side Lower MOS; DTC B2025: Right Side Current Detection Circuit Malfunction Hi; DTC B2026: Right Side Current Detection Circuit Malfunction Lo; DTC B2027: Right Side Over-Current Malfunction; DTC B2030: Left Side Current Detection Circuit Malfunction Hi; DTC B2031: Left Side Current Detection Circuit Malfunction Lo; DTC B2032: Left Side Over-Current Malfunction; DTC B2035: Power Supply Relay Adherence Malfunction; DTC B2040: EEPROM Malfunction; DTC B2041: Fall of Raised Voltage; DTC B2043: Fall of B+ Voltage; DTC B2047: Seat Belt Control ECU Inner Circuit Malfunction
B2020 Open in Left Side Upper MOS Refer to DTC B2015: Open in Right Side Upper MOS; DTC B2016: Open in Right Side Lower MOS; DTC B2020: Open in Left Side Upper MOS; DTC B2021: Open in Left Side Lower MOS; DTC B2025: Right Side Current Detection Circuit Malfunction Hi; DTC B2026: Right Side Current Detection Circuit Malfunction Lo; DTC B2027: Right Side Over-Current Malfunction; DTC B2030: Left Side Current Detection Circuit Malfunction Hi; DTC B2031: Left Side Current Detection Circuit Malfunction Lo; DTC B2032: Left Side Over-Current Malfunction; DTC B2035: Power Supply Relay Adherence Malfunction; DTC B2040: EEPROM Malfunction; DTC B2041: Fall of Raised Voltage; DTC B2043: Fall of B+ Voltage; DTC B2047: Seat Belt Control ECU Inner Circuit Malfunction
B2021 Open in Left Side Lower MOS Refer to DTC B2015: Open in Right Side Upper MOS; DTC B2016: Open in Right Side Lower MOS; DTC B2020: Open in Left Side Upper MOS; DTC B2021: Open in Left Side Lower MOS; DTC B2025: Right Side Current Detection Circuit Malfunction Hi; DTC B2026: Right Side Current Detection Circuit Malfunction Lo; DTC B2027: Right Side Over-Current Malfunction; DTC B2030: Left Side Current Detection Circuit Malfunction Hi; DTC B2031: Left Side Current Detection Circuit Malfunction Lo; DTC B2032: Left Side Over-Current Malfunction; DTC B2035: Power Supply Relay Adherence Malfunction; DTC B2040: EEPROM Malfunction; DTC B2041: Fall of Raised Voltage; DTC B2043: Fall of B+ Voltage; DTC B2047: Seat Belt Control ECU Inner Circuit Malfunction
B2025 Right Side Current Detection Circuit Malfunction Hi Refer to DTC B2015: Open in Right Side Upper MOS; DTC B2016: Open in Right Side Lower MOS; DTC B2020: Open in Left Side Upper MOS; DTC B2021: Open in Left Side Lower MOS; DTC B2025: Right Side Current Detection Circuit Malfunction Hi; DTC B2026: Right Side Current Detection Circuit Malfunction Lo; DTC B2027: Right Side Over-Current Malfunction; DTC B2030: Left Side Current Detection Circuit Malfunction Hi; DTC B2031: Left Side Current Detection Circuit Malfunction Lo; DTC B2032: Left Side Over-Current Malfunction; DTC B2035: Power Supply Relay Adherence Malfunction; DTC B2040: EEPROM Malfunction; DTC B2041: Fall of Raised Voltage; DTC B2043: Fall of B+ Voltage; DTC B2047: Seat Belt Control ECU Inner Circuit Malfunction
B2026 Right Side Current Detection Circuit Malfunction Lo Refer to DTC B2015: Open in Right Side Upper MOS; DTC B2016: Open in Right Side Lower MOS; DTC B2020: Open in Left Side Upper MOS; DTC B2021: Open in Left Side Lower MOS; DTC B2025: Right Side Current Detection Circuit Malfunction Hi; DTC B2026: Right Side Current Detection Circuit Malfunction Lo; DTC B2027: Right Side Over-Current Malfunction; DTC B2030: Left Side Current Detection Circuit Malfunction Hi; DTC B2031: Left Side Current Detection Circuit Malfunction Lo; DTC B2032: Left Side Over-Current Malfunction; DTC B2035: Power Supply Relay Adherence Malfunction; DTC B2040: EEPROM Malfunction; DTC B2041: Fall of Raised Voltage; DTC B2043: Fall of B+ Voltage; DTC B2047: Seat Belt Control ECU Inner Circuit Malfunction
B2027 Right Side Over-Current Malfunction Refer to DTC B2015: Open in Right Side Upper MOS; DTC B2016: Open in Right Side Lower MOS; DTC B2020: Open in Left Side Upper MOS; DTC B2021: Open in Left Side Lower MOS; DTC B2025: Right Side Current Detection Circuit Malfunction Hi; DTC B2026: Right Side Current Detection Circuit Malfunction Lo; DTC B2027: Right Side Over-Current Malfunction; DTC B2030: Left Side Current Detection Circuit Malfunction Hi; DTC B2031: Left Side Current Detection Circuit Malfunction Lo; DTC B2032: Left Side Over-Current Malfunction; DTC B2035: Power Supply Relay Adherence Malfunction; DTC B2040: EEPROM Malfunction; DTC B2041: Fall of Raised Voltage; DTC B2043: Fall of B+ Voltage; DTC B2047: Seat Belt Control ECU Inner Circuit Malfunction
B2030 Left Side Current Detection Circuit Malfunction Hi Refer to DTC B2015: Open in Right Side Upper MOS; DTC B2016: Open in Right Side Lower MOS; DTC B2020: Open in Left Side Upper MOS; DTC B2021: Open in Left Side Lower MOS; DTC B2025: Right Side Current Detection Circuit Malfunction Hi; DTC B2026: Right Side Current Detection Circuit Malfunction Lo; DTC B2027: Right Side Over-Current Malfunction; DTC B2030: Left Side Current Detection Circuit Malfunction Hi; DTC B2031: Left Side Current Detection Circuit Malfunction Lo; DTC B2032: Left Side Over-Current Malfunction; DTC B2035: Power Supply Relay Adherence Malfunction; DTC B2040: EEPROM Malfunction; DTC B2041: Fall of Raised Voltage; DTC B2043: Fall of B+ Voltage; DTC B2047: Seat Belt Control ECU Inner Circuit Malfunction
B2031 Left Side Current Detection Circuit Malfunction Lo Refer to DTC B2015: Open in Right Side Upper MOS; DTC B2016: Open in Right Side Lower MOS; DTC B2020: Open in Left Side Upper MOS; DTC B2021: Open in Left Side Lower MOS; DTC B2025: Right Side Current Detection Circuit Malfunction Hi; DTC B2026: Right Side Current Detection Circuit Malfunction Lo; DTC B2027: Right Side Over-Current Malfunction; DTC B2030: Left Side Current Detection Circuit Malfunction Hi; DTC B2031: Left Side Current Detection Circuit Malfunction Lo; DTC B2032: Left Side Over-Current Malfunction; DTC B2035: Power Supply Relay Adherence Malfunction; DTC B2040: EEPROM Malfunction; DTC B2041: Fall of Raised Voltage; DTC B2043: Fall of B+ Voltage; DTC B2047: Seat Belt Control ECU Inner Circuit Malfunction
B2032 Left Side Over-Current Malfunction Refer to DTC B2015: Open in Right Side Upper MOS; DTC B2016: Open in Right Side Lower MOS; DTC B2020: Open in Left Side Upper MOS; DTC B2021: Open in Left Side Lower MOS; DTC B2025: Right Side Current Detection Circuit Malfunction Hi; DTC B2026: Right Side Current Detection Circuit Malfunction Lo; DTC B2027: Right Side Over-Current Malfunction; DTC B2030: Left Side Current Detection Circuit Malfunction Hi; DTC B2031: Left Side Current Detection Circuit Malfunction Lo; DTC B2032: Left Side Over-Current Malfunction; DTC B2035: Power Supply Relay Adherence Malfunction; DTC B2040: EEPROM Malfunction; DTC B2041: Fall of Raised Voltage; DTC B2043: Fall of B+ Voltage; DTC B2047: Seat Belt Control ECU Inner Circuit Malfunction
B2035 Power Supply Relay Adherence Malfunction Refer to DTC B2015: Open in Right Side Upper MOS; DTC B2016: Open in Right Side Lower MOS; DTC B2020: Open in Left Side Upper MOS; DTC B2021: Open in Left Side Lower MOS; DTC B2025: Right Side Current Detection Circuit Malfunction Hi; DTC B2026: Right Side Current Detection Circuit Malfunction Lo; DTC B2027: Right Side Over-Current Malfunction; DTC B2030: Left Side Current Detection Circuit Malfunction Hi; DTC B2031: Left Side Current Detection Circuit Malfunction Lo; DTC B2032: Left Side Over-Current Malfunction; DTC B2035: Power Supply Relay Adherence Malfunction; DTC B2040: EEPROM Malfunction; DTC B2041: Fall of Raised Voltage; DTC B2043: Fall of B+ Voltage; DTC B2047: Seat Belt Control ECU Inner Circuit Malfunction
B2036 Power Supply Relay Malfunction Open Refer to DTC B2036: Power Supply Relay Malfunction Open
B2040 EEPROM Malfunction Refer to DTC B2015: Open in Right Side Upper MOS; DTC B2016: Open in Right Side Lower MOS; DTC B2020: Open in Left Side Upper MOS; DTC B2021: Open in Left Side Lower MOS; DTC B2025: Right Side Current Detection Circuit Malfunction Hi; DTC B2026: Right Side Current Detection Circuit Malfunction Lo; DTC B2027: Right Side Over-Current Malfunction; DTC B2030: Left Side Current Detection Circuit Malfunction Hi; DTC B2031: Left Side Current Detection Circuit Malfunction Lo; DTC B2032: Left Side Over-Current Malfunction; DTC B2035: Power Supply Relay Adherence Malfunction; DTC B2040: EEPROM Malfunction; DTC B2041: Fall of Raised Voltage; DTC B2043: Fall of B+ Voltage; DTC B2047: Seat Belt Control ECU Inner Circuit Malfunction
B2041 Fall of Raised Voltage Refer to DTC B2015: Open in Right Side Upper MOS; DTC B2016: Open in Right Side Lower MOS; DTC B2020: Open in Left Side Upper MOS; DTC B2021: Open in Left Side Lower MOS; DTC B2025: Right Side Current Detection Circuit Malfunction Hi; DTC B2026: Right Side Current Detection Circuit Malfunction Lo; DTC B2027: Right Side Over-Current Malfunction; DTC B2030: Left Side Current Detection Circuit Malfunction Hi; DTC B2031: Left Side Current Detection Circuit Malfunction Lo; DTC B2032: Left Side Over-Current Malfunction; DTC B2035: Power Supply Relay Adherence Malfunction; DTC B2040: EEPROM Malfunction; DTC B2041: Fall of Raised Voltage; DTC B2043: Fall of B+ Voltage; DTC B2047: Seat Belt Control ECU Inner Circuit Malfunction
B2043 Fall of B+ Voltage Refer to DTC B2015: Open in Right Side Upper MOS; DTC B2016: Open in Right Side Lower MOS; DTC B2020: Open in Left Side Upper MOS; DTC B2021: Open in Left Side Lower MOS; DTC B2025: Right Side Current Detection Circuit Malfunction Hi; DTC B2026: Right Side Current Detection Circuit Malfunction Lo; DTC B2027: Right Side Over-Current Malfunction; DTC B2030: Left Side Current Detection Circuit Malfunction Hi; DTC B2031: Left Side Current Detection Circuit Malfunction Lo; DTC B2032: Left Side Over-Current Malfunction; DTC B2035: Power Supply Relay Adherence Malfunction; DTC B2040: EEPROM Malfunction; DTC B2041: Fall of Raised Voltage; DTC B2043: Fall of B+ Voltage; DTC B2047: Seat Belt Control ECU Inner Circuit Malfunction
B2047 Seat Belt Control ECU Inner Circuit Malfunction Refer to DTC B2015: Open in Right Side Upper MOS; DTC B2016: Open in Right Side Lower MOS; DTC B2020: Open in Left Side Upper MOS; DTC B2021: Open in Left Side Lower MOS; DTC B2025: Right Side Current Detection Circuit Malfunction Hi; DTC B2026: Right Side Current Detection Circuit Malfunction Lo; DTC B2027: Right Side Over-Current Malfunction; DTC B2030: Left Side Current Detection Circuit Malfunction Hi; DTC B2031: Left Side Current Detection Circuit Malfunction Lo; DTC B2032: Left Side Over-Current Malfunction; DTC B2035: Power Supply Relay Adherence Malfunction; DTC B2040: EEPROM Malfunction; DTC B2041: Fall of Raised Voltage; DTC B2043: Fall of B+ Voltage; DTC B2047: Seat Belt Control ECU Inner Circuit Malfunction
B2060 ABS Malfunction Refer to DTC B2060: ABS Malfunction
B2064 Vehicle Type Signal Malfunction Refer to DTC B2064: Vehicle Type Signal Malfunction
B2074 Driver Side Seat Belt Buckle Switch Circuit Malfunction Refer to DTC B2074: Driver Side Seat Belt Buckle Switch Circuit Malfunction; DTC B2075: Passenger Side Seat Belt Buckle Switch Circuit Malfunction
B2075 Passenger Side Seat Belt Buckle Switch Circuit Malfunction Refer to DTC B2074: Driver Side Seat Belt Buckle Switch Circuit Malfunction; DTC B2075: Passenger Side Seat Belt Buckle Switch Circuit Malfunction
B2085 Communication Error from Driving Support ECU to VSC ECU Refer to DTC B2085: Communication Error from Driving Support ECU to VSC ECU
B2090 Driving Support System Malfunction Refer to DTC B2090: Driving Support System Malfunction
C1A01 Driving Support ECU Refer to DTC C1A01: Driving Support ECU
C1A02 Vehicle Information Not Obtained Refer to DTC C1A02: Vehicle Information Not Obtained
C1A0A Front Radar Sensor Region Code Mismatch Refer to DTC C1A0A: Front Radar Sensor Region Code Mismatch
C1A10 Front Radar Sensor Refer to DTC C1A10: Front Radar Sensor
C1A11 Front Radar Sensor Incorrect Axial Gap Refer to DTC C1A11: Front Radar Sensor Incorrect Axial Gap; DTC C1A14: Front Radar Sensor Beam Axis Not Adjusted
C1A14 Front Radar Sensor Beam Axis Not Adjusted Refer to DTC C1A11: Front Radar Sensor Incorrect Axial Gap; DTC C1A14: Front Radar Sensor Beam Axis Not Adjusted
C1A40 ENG / EHV Device Refer to DTC C1A40: ENG / EHV Device
C1A41 Brake Request Value Mismatch between ENG / EHV and Driving Support ECU Refer to DTC C1A41: Brake Request Value Mismatch between ENG / EHV and Driving Support ECU
C1A46 Yaw Rate Sensor Refer to DTC C1A46: Yaw Rate Sensor
C1A47 Steering Angle Sensor Refer to DTC C1A47: Steering Angle Sensor
C1A4A Skid Control Buzzer Circuit Refer to DTC C1A4A: Skid Control Buzzer Circuit
C1A4B Stop Light Relay Circuit Refer to DTC C1A4B: Stop Light Relay Circuit
U0122 Lost Communication with Vehicle Dynamics Control Module Refer to DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0140: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Airbag ECU; DTC U0235: Lost Communication with Cruise Control Front Distance Range Sensor; DTC U0293: Lost Communication with HV ECU; DTC U1002: Lost Communication with Gateway Module; DTC U1100: Lost Communication with Seat Belt Control ECU; DTC U1104: Lost Communication with Driving Support ECU
U0123 Lost Communication with Yaw Rate Sensor Module Refer to DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0140: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Airbag ECU; DTC U0235: Lost Communication with Cruise Control Front Distance Range Sensor; DTC U0293: Lost Communication with HV ECU; DTC U1002: Lost Communication with Gateway Module; DTC U1100: Lost Communication with Seat Belt Control ECU; DTC U1104: Lost Communication with Driving Support ECU
U0126 Lost Communication with Steering Angle Sensor Module Refer to DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0140: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Airbag ECU; DTC U0235: Lost Communication with Cruise Control Front Distance Range Sensor; DTC U0293: Lost Communication with HV ECU; DTC U1002: Lost Communication with Gateway Module; DTC U1100: Lost Communication with Seat Belt Control ECU; DTC U1104: Lost Communication with Driving Support ECU
U0140 Lost Communication with Main Body ECU Refer to DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0140: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Airbag ECU; DTC U0235: Lost Communication with Cruise Control Front Distance Range Sensor; DTC U0293: Lost Communication with HV ECU; DTC U1002: Lost Communication with Gateway Module; DTC U1100: Lost Communication with Seat Belt Control ECU; DTC U1104: Lost Communication with Driving Support ECU
U0151 Lost Communication with Airbag ECU Refer to DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0140: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Airbag ECU; DTC U0235: Lost Communication with Cruise Control Front Distance Range Sensor; DTC U0293: Lost Communication with HV ECU; DTC U1002: Lost Communication with Gateway Module; DTC U1100: Lost Communication with Seat Belt Control ECU; DTC U1104: Lost Communication with Driving Support ECU
U0235 Lost Communication with Cruise Control Front Distance Range Sensor Refer to DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0140: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Airbag ECU; DTC U0235: Lost Communication with Cruise Control Front Distance Range Sensor; DTC U0293: Lost Communication with HV ECU; DTC U1002: Lost Communication with Gateway Module; DTC U1100: Lost Communication with Seat Belt Control ECU; DTC U1104: Lost Communication with Driving Support ECU
U0293 Lost Communication with HV ECU Refer to DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0140: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Airbag ECU; DTC U0235: Lost Communication with Cruise Control Front Distance Range Sensor; DTC U0293: Lost Communication with HV ECU; DTC U1002: Lost Communication with Gateway Module; DTC U1100: Lost Communication with Seat Belt Control ECU; DTC U1104: Lost Communication with Driving Support ECU
U1002 Lost Communication with Gateway Module Refer to DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0140: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Airbag ECU; DTC U0235: Lost Communication with Cruise Control Front Distance Range Sensor; DTC U0293: Lost Communication with HV ECU; DTC U1002: Lost Communication with Gateway Module; DTC U1100: Lost Communication with Seat Belt Control ECU; DTC U1104: Lost Communication with Driving Support ECU
U1100 Lost Communication with Seat Belt Control ECU Refer to DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0140: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Airbag ECU; DTC U0235: Lost Communication with Cruise Control Front Distance Range Sensor; DTC U0293: Lost Communication with HV ECU; DTC U1002: Lost Communication with Gateway Module; DTC U1100: Lost Communication with Seat Belt Control ECU; DTC U1104: Lost Communication with Driving Support ECU
U1104 Lost Communication with Driving Support ECU Refer to DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0140: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Airbag ECU; DTC U0235: Lost Communication with Cruise Control Front Distance Range Sensor; DTC U0293: Lost Communication with HV ECU; DTC U1002: Lost Communication with Gateway Module; DTC U1100: Lost Communication with Seat Belt Control ECU; DTC U1104: Lost Communication with Driving Support ECU