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.
2004 Lexus SC 430FACTORY OEM SERVICE PROCEDURE
Diagnostic Tests: Notes
DIAGNOSTIC TROUBLE CODE DEFINITION
| DTC | Definition |
|---|---|
| C0200/31 | Right Front Speed Sensor Circuit |
| C0205/32 | Left Front Speed Sensor Circuit |
| C0210/33 | Right Rear Speed Sensor Circuit |
| C0215/34 | Left Rear Speed Sensor Circuit |
| C0226/21 | SFR Solenoid Circuit |
| C0236/22 | SFL Solenoid Circuit |
| C0246/23 | SRR Solenoid Circuit |
| C0256/24 | SFL Solenoid Circuit |
| C0278/11 | Open Circuit In ABS Solenoid Relay Circuit |
| C0279/12 | Short Circuit In ABS Solenoid Relay Circuit |
| C1201/51 | Engine Control System Malfunction |
| C1203/53 | ECM Communication Circuit Malfunction |
| C1210/36 | Zero Point Calibration Of Yaw Rate Sensor Undone |
| C1223/43 | ABS Control System Malfunction |
| C1224/44 | NE Signal Circuit |
| C1225/25 | SMC Solenoid Circuit (A1) |
| C1226/26 | SPC Solenoid Circuit (SA2) |
| C1227/27 | SRC Solenoid Circuit (SA3) |
| C1228/28 | STR Solenoid Circuit |
| C1231/31 | Steering Angle Sensor Circuit |
| C1232/32 | Deceleration Sensor Does Not Function |
| C1233/33 | Yaw Rate Sensor Circuit |
| C1234/34 | Malfunction In Yaw Rate Sensor |
| C1235/35 | Foreign Matter Is Attached On Tip Of Right Front Sensor |
| C1236/36 | Foreign Matter Is Attached On Tip Of Left Front Sensor |
| C1238/38 | Foreign Matter Is Attached On Tip Of Right Rear Sensor |
| C1239/39 | Foreign Matter Is Attached On Tip Of left Rear Sensor |
| C1241/41 | IG Power Source Circuit |
| C1242/42 | IG2 Power Source Circuit |
| C1243/43 | Malfunction In Deceleration Sensor |
| C1244/44 | Deceleration Sensor Circuit |
| C1245/45 | Malfunction In Deceleration Sensor |
| C1246/46 | Master Cylinder Pressure Sensor Circuit |
| C1249/49 | Stop Light Switch Circuit |
| C1251/51 | ABS Pump Motor Lock |
| C1252/52 | Brake Booster Pump Motor ON Time Abnormally Long |
| C1253/53 | Brake Booster Pump Motor Circuit |
| C1254/54 | Pressure Switch Circuit |
| C1256/56 | Accumulator Low Pressure |
| C1257/57 | IG Power Source |
| C1335/35 | Steering Angle Sensor Circuit |
| C1336/39 | Zero Point Calibration Of Deceleration Sensor Undone |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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