Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSLEXUS2011GS 450H V6-3.5L (2GR-FSE) HYBRIDREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONU CODE CHARTSU0123ELECTRONICALLY CONTROLLED BRAKE SYSTEM
2011 Lexus GS 450h V6-3.5L (2GR-FSE) Hybrid
Electronically Controlled Brake System
2011 Lexus GS 450h V6-3.5L (2GR-FSE) HybridSECTION Electronically Controlled Brake System
BRAKE CONTROL: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: U0073/94,U0123/62,U0124/95,U0126/63,U0130/68,U0131/67,U0293/59: Control Module Communication Bus OFF
U0293/59 - Communication Error from HV ECU
DESCRIPTION
The skid control ECU inputs the signals from the HV control ECU, power steering (EPS) ECU, steering control (VGRS) ECU, steering angle sensor, and yaw rate and acceleration sensor via the CAN communication system.
INSPECTION PROCEDURE
PROCEDURE
1. CHECK DTC
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
Result:
HINT
The CAN communication system must be normal when repairing the sensor DTCs (for ABS, VSC and electronically controlled brake system).
NG -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting
OK -- END
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.