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.
2001 Lexus ES 300FACTORY OEM SERVICE PROCEDURE
Abs & Traction Control System DTC
DIAGNOSTIC TROUBLE CODE INDEX
| DTC No. | Detection Item |
|---|---|
| C0278/11 | Open circuit of ABS & TRAC solenoid relay circuit |
| C0279/12 | Short circuit of ABS & TRAC solenoid relay circuit |
| C0273/13 | Open circuit of ABS & TRAC motor relay circuit |
| C0274/14 | Short circuit of ABS & TRAC motor relay circuit |
| C0226/21 | Open or short circuit of right front solenoid circuit |
| C0236/22 | Open or short circuit of left front solenoid circuit |
| C0246/23 | Open or short circuit of right rear solenoid circuit |
| C0256/24 | Open or short circuit of left rear solenoid circuit |
| C1225/25 | Open or short circuit of SMC1 circuit |
| C1226/26 | Open or short circuit of SMC2 circuit |
| C1227/27 | Open or short circuit of SRC1 circuit |
| C1228/28 | Open or short circuit of SRC2 circuit |
| C0200/31 | Right front wheel speed sensor signal malfunction |
| C0205/32 | Left front wheel speed sensor signal malfunction |
| C0210/33 | Right rear wheel speed sensor signal malfunction |
| C0215/34 | Left rear wheel speed sensor signal malfunction |
| C1241/41 | Low battery positive voltage or abnormally high battery positive voltage |
| C1223/43 | Malfunction in ABS control system |
| C1224/44 | Open or short circuit of NE signal circuit |
| C1249/49 | Open circuit of stop light switch circuit |
| C1251/51 | Pump motor is locked |
| C1203/53 | Malfunction in ECM communication circuit |
| C1201/61 | Malfunction in engine control system |
| ALWAYS ON | Malfunction in ECU |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.