LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2007 >> GS 430 >> Repair and Diagnosis >> Suspension >> Suspension Control Systems >> Suspension Control >> Active Stabilizer Suspension System >> Diagnostic Trouble Code Chart
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Trouble Code Chart

HINT:

If a malfunction code is displayed during the DTC check, inspect the circuit relevant to that code. For details of each code, refer to the page listed under "See page" in the table below.

Active stabilizer suspension system 

DIAGNOSTIC TROUBLE CODE CHART

DTC Code Detection Item Trouble Area
C1901/11  Rear Magnetic Pole Sensor Initialization Incomplete
  • Rear active stabilizer control actuator
  • Rear active stabilizer control ECU
  • Wire harness or connector
C1902/11  Rear Magnetic Pole Sensor Pattern
  • Rear active stabilizer control actuator
  • Rear active stabilizer control ECU
  • Wire harness or connector
C1903/11  Rear Actuator Short Detect Relay
  • Rear active stabilizer control actuator
  • Rear active stabilizer control ECU
  • Wire harness or connector
C1904/11  Protection for Overload of Rear Actuator
  • Rear active stabilizer control actuator
  • Rear active stabilizer control ECU
  • Wire harness or connector
C1905/13  Timeout Initialization Check of Rear Actuator
  • STB RR H-fuse
  • Rear active stabilizer relay
  • Front active stabilizer relay
  • Rear active stabilizer control actuator
  • Rear active stabilizer control ECU
  • Wire harness or connector
C1906/11  Ratchet Angle of Rear Actuator
  • Rear active stabilizer control actuator
  • Rear active stabilizer control ECU
  • Wire harness or connector
C1907/12  Front ECU and Rear ECU Failure
  • Front active stabilizer control ECU
  • Wire harness or connector
C1908/12  Open in Rear Metal Board Temperature Sensor Circuit
  • Rear active stabilizer control ECU
C1909/12  Short in Rear Metal Board Temperature Sensor Circuit
  • Rear active stabilizer control ECU
C190A/12  Open in Rear Control Board Temperature Sensor Circuit
  • Rear active stabilizer control ECU
C190B/12  Short in Rear Control Board Temperature Sensor Circuit
  • Rear active stabilizer control ECU
C190C/12  Rear Metal Board Overheat
  • Rear active stabilizer control ECU
C190D/12  Rear Control Board Overheat
  • Rear active stabilizer control ECU
C190E/12  Malfunction in Rear Active Stabilizer Control ECU Magnetic Pole Sensor Power Supply IC
  • Rear active stabilizer control ECU
C190F/12  Malfunction in Rear Active Stabilizer Control ECU Main Relay Power Supply IC
  • Rear active stabilizer control ECU
C1910/12  Malfunction in Rear Active Stabilizer Control ECU Battery Sensor Power Supply IC
  • Rear active stabilizer control ECU
C1911/23  Malfunction in Rear Active Stabilizer Main Relay
  • STB RR H-fuse
  • Rear active stabilizer relay
  • Front active stabilizer relay
  • Rear active stabilizer control actuator
  • Rear active stabilizer control ECU
  • Wire harness or connector
C1912/12  Malfunction in Rear Active Stabilizer Control ECU Short Relay Power Supply IC
  • Rear active stabilizer control ECU
C1913/12  Rear Boosted Voltage
  • Active stabilizer converter
  • Rear active stabilizer control ECU
  • Battery (for active stabilizer)
  • Front active stabilizer relay
  • Rear active stabilizer relay
  • Wire harness or connector
C1915/22  Rear PIG Power Supply Voltage
  • Active stabilizer converter
  • Rear active stabilizer control ECU
  • Battery (for active stabilizer)
  • Front active stabilizer relay
  • Rear active stabilizer relay
  • Wire harness or connector
C1916/24  Malfunction in Rear Active Stabilizer Control ECU Local CAN Transmission
  • Rear active stabilizer control ECU
  • Wire harness or connector
C1917/25 Rear Active Stabilizer Control ECU CAN Communication Stop
  • CAN communication line
  • Rear active stabilizer control ECU
C1918/26  Rear Yaw Rate Sensor
  • CAN communication line
  • Rear active stabilizer control ECU
  • Yaw rate sensor
C1919/27  Rear Acceleration Sensor
  • CAN communication line
  • Rear active stabilizer control ECU
  • Acceleration sensor
C191A/28  Malfunction in Signal from Steering Sensor to Rear Active Stabilizer Control ECU
  • CAN communication line
  • Rear active stabilizer control ECU
  • Steering angle sensor
C191B/29  Rear Vehicle Speed Signal
  • CAN communication line
  • Rear active stabilizer control ECU
  • Speed sensor
C191E/53  Malfunction in Signal from Steering Control ECU to Rear Active Stabilizer Control ECU
  • CAN communication line
  • Rear active stabilizer control ECU
  • Steering control ECU
C1921/12  Malfunction in Rear Active Stabilizer Control ECU EEPROM
  • Rear active stabilizer control ECU
C1923/13  Open in Rear Motor Driver Circuit
  • STB RR H-fuse
  • Rear active stabilizer relay
  • Front active stabilizer relay
  • Rear active stabilizer control actuator
  • Rear active stabilizer control ECU
  • Wire harness or connector
C1924/13  Short in Rear Motor Driver Circuit
  • STB RR H-fuse
  • Rear active stabilizer relay
  • Front active stabilizer relay
  • Rear active stabilizer control actuator
  • Rear active stabilizer control ECU
  • Wire harness or connector
C1925/15  Low Capacity Sub Battery
  • Active stabilizer battery current sensor
  • Active stabilizer converter
  • Rear active stabilizer control ECU
  • Battery (for active stabilizer)
  • Front active stabilizer relay
  • Rear active stabilizer relay
  • Wire harness or connector
C1926/16  Sub Battery Temperature Sensor
  • Active stabilizer battery current sensor
  • Rear active stabilizer control ECU
  • Wire harness or connector
C1927/17  Sub Battery Current Sensor
  • Active stabilizer battery current sensor
  • Rear active stabilizer control ECU
  • Wire harness or connector
C1928/18  Malfunction in DC/DC Converter
  • Active stabilizer converter
  • Rear active stabilizer control ECU
  • Battery (for active stabilizer)
  • Front active stabilizer relay
  • Rear active stabilizer relay
  • Wire harness or connector
C1929/31  Front Magnetic Pole Sensor Initialization Incomplete
  • Front active stabilizer control actuator
  • Front active stabilizer control ECU
  • Wire harness or connector
C192A/31  Front Magnetic Pole Sensor Pattern
  • Front active stabilizer control actuator
  • Front active stabilizer control ECU
  • Wire harness or connector
C192B/31  Front Actuator Short Detect Relay
  • Front active stabilizer control actuator
  • Front active stabilizer control ECU
  • Wire harness or connector
C192C/31  Protection for Overload of Front Actuator
  • Front active stabilizer control actuator
  • Front active stabilizer control ECU
  • Wire harness or connector
C192E/31  Ratchet Angle of Front Actuator
  • Front active stabilizer control actuator
  • Front active stabilizer control ECU
  • Wire harness or connector
C192F/32  Front ECU and Rear ECU Failure
  • Rear active stabilizer control ECU
  • Wire harness or connector
C1930/32  Open in Front Metal Board Temperature Sensor Circuit
  • Front active stabilizer control ECU
C1931/32  Short in Front Metal Board Temperature Sensor Circuit
  • Front active stabilizer control ECU
C1932/32  Open in Front Control Board Temperature Sensor Circuit
  • Front active stabilizer control ECU
C1933/32  Short in Front Control Board Temperature Sensor Circuit
  • Front active stabilizer control ECU
C1934/32  Front Metal Board Overheat
  • Front active stabilizer control ECU
C1935/32  Front Control Board Overheat
  • Front active stabilizer control ECU
C1936/32  Malfunction in Front Active Stabilizer Control ECU Magnetic Pole Sensor Power Supply IC
  • Front active stabilizer control ECU
C1937/32  Malfunction in Front Active Stabilizer Control ECU Main Relay Power Supply IC
  • Front active stabilizer control ECU
C1938/32  Malfunction in Front Active Stabilizer Control ECU Short Relay Power Supply IC
  • Front active stabilizer control ECU
C1939/32  Front Boosted Voltage
  • Active stabilizer converter
  • Front active stabilizer control ECU
  • Battery (for active stabilizer)
  • Front active stabilizer relay
  • Rear active stabilizer relay
  • Wire harness or connector
C193A/32  Malfunction in Front Active Stabilizer Control ECU EEPROM
  • Front active stabilizer control ECU
C193B/43  Malfunction in Front Active Stabilizer Main Relay
  • STB FR H-fuse
  • Rear active stabilizer relay
  • Front active stabilizer relay
  • Front active stabilizer control actuator
  • Front active stabilizer control ECU
  • Wire harness or connector
C193C/42  Front PIG Power Supply Voltage
  • Active stabilizer converter
  • Front active stabilizer control ECU
  • Battery (for active stabilizer)
  • Front active stabilizer relay
  • Rear active stabilizer relay
  • Wire harness or connector
C193D/44  Malfunction in Front Active Stabilizer Control ECU Local CAN Transmission
  • Active stabilizer battery current sensor
  • Front active stabilizer control ECU
  • Wire harness or connector
C193E/45  Front Active Stabilizer Control ECU CAN Communication Stop
  • Front active stabilizer control ECU
  • Wire harness or connector
C1940/46  Front Yaw Rate Sensor
  • CAN communication line
  • Front active stabilizer control ECU
C1941/47  Front Acceleration Sensor
  • CAN communication line
  • Front active stabilizer control ECU
C1942/48  Malfunction in Signal from Steering Sensor to Front Active Stabilizer Control ECU
  • CAN communication line
  • Front active stabilizer control ECU
C1943/49  Front Vehicle Speed Signal
  • CAN communication line
  • Front active stabilizer control ECU
C1946/57 Malfunction in Signal from Steering Control ECU to Front Active Stabilizer Control ECU
  • CAN communication line
  • Front active stabilizer control ECU
C194B/33  Open in Front Motor Driver Circuit
  • STB FR H-fuse
  • Rear active stabilizer relay
  • Front active stabilizer relay
  • Front active stabilizer control actuator
  • Front active stabilizer control ECU
  • Wire harness or connector
C194C/33  Short in Front Motor Driver Circuit
  • STB FR H-fuse
  • Rear active stabilizer relay
  • Front active stabilizer relay
  • Front active stabilizer control actuator
  • Front active stabilizer control ECU
  • Wire harness or connector
C194D/33  Timeout Initialization Check of Front Actuator
  • STB FR H-fuse
  • Rear active stabilizer relay
  • Front active stabilizer relay
  • Front active stabilizer control actuator
  • Front active stabilizer control ECU
  • Wire harness or connector
C194E/19  Deterioration of Sub Battery
  • Active stabilizer current sensor
  • Active stabilizer converter
  • Rear active stabilizer control ECU
  • Battery (for active stabilizer)
  • Front active stabilizer relay
  • Rear active stabilizer relay
  • Wire harness or connector
C194F  Operation of Static Test Mode is Incomplete (Test Mode DTC)
  • Test mode operation error
  • Steering angle sensor
C1950  Front Stabilizer Target Angle Not Attained (Test Mode DTC)
  • Front active stabilizer control actuator
  • Front active stabilizer control ECU
  • Wire harness or connector
C1951  Rear Stabilizer Target Angle Not Attained (Test Mode DTC)
  • Rear active stabilizer control actuator
  • Rear active stabilizer control ECU
  • Wire harness or connector
U0100/83  ECM Communication Stop
  • CAN communication system
U0122/85  Skid Control ECU Communication Stop
  • CAN communication system
U0123/81  Yaw Rate Sensor Communication Stop
  • CAN communication system
U0126/82  Steering Sensor Communication Stop
  • CAN communication system
U0130/86  Steering Control ECU Communication Stop
  • CAN communication system
U0132/87  Absorber Control ECU Communication Stop
  • CAN communication system