DTC C0226/21 SFR Solenoid Circuit; DTC C0236/22 SFL Solenoid Circuit; DTC C0246/23 SRR Solenoid Circuit; DTC C0256/24 SRL Solenoid Circuit: Description

WARNING: This page is about a different car, the 2006 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.

These solenoids turn on when signals are received from the skid control ECU and control the pressure acting on the wheel cylinders to control the braking force.

DIAGNOSIS TROUBLE CODE CHART

DTC No.	DTC Detection Condition	Trouble Area
C0226/21 C0236/22 C0246/23 C0256/24	When any of the following is detected: Open or short in the solenoid circuit continues for 0.05 seconds or more. While outputting solenoid OFF, an open circuit continues for 0.05 seconds or more. While outputting solenoid ON, overcurrent continues for 0.05 seconds or more. While outputting solenoid ON, an open circuit continues for 0.1 seconds or more. While outputting solenoid OFF, current continues to be applied for 0.1 seconds or more. Short to GND in the solenoid continues for 0.1 seconds or more.	Solenoid circuit Skid control ECU