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.
2009 Toyota Yaris S, 4D HatchbackFACTORY OEM SERVICE PROCEDURE
Brake Control DTCS: Sedan
BRAKE CONTROL DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| C0200/31 | Right Front Wheel Speed Sensor Signal |
| C0205/32 | Left Front Wheel Speed Sensor Signal |
| C0210/33 | Right Rear Wheel Speed Sensor Signal |
| C0215/34 | Left Rear Wheel Speed Sensor Signal |
| C0226/21 | SFR Solenoid Circuit |
| C0236/22 | SFL Solenoid Circuit |
| C0246/23 | SRR Solenoid Circuit |
| C0256/24 | SRL Solenoid Circuit |
| C0273/13 | Open in ABS Motor Relay Circuit |
| C0274/14 | Short to B+ in ABS Motor Relay Circuit |
| C0278/11 | Open in ABS Solenoid Relay Circuit |
| C0279/12 | Short to B+ in ABS Solenoid Relay Circuit |
| C1235/35 | Foreign Object is Attached on Tip of Front Speed Sensor RH |
| C1236/36 | Foreign Object is Attached on Tip of Front Speed Sensor LH |
| C1238/38 | Foreign Object is Attached on Tip of Rear Speed Sensor RH |
| C1239/39 | Foreign Object is Attached on Tip of Rear Speed Sensor LH |
| C1241/41 | Low Battery Positive Voltage or Abnormally High Battery Positive Voltage |
| C1249/49 | Open in Stop Light Switch Circuit |
| C1251/51 | Open in Pump Motor Circuit |
| U0073/94 | Control Module Communication Bus OFF |
TEST MODE DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| C1271/71 | Low Output Signal of Front Speed Sensor RH (Test Mode DTC) |
| C1272/72 | Low Output Signal of Front Speed Sensor LH (Test Mode DTC) |
| C1273/73 | Low Output Signal of Rear Speed Sensor RH (Test Mode DTC) |
| C1274/74 | Low Output Signal of Rear Speed Sensor LH (Test Mode DTC) |
| C1275/75 | Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC) |
| C1276/76 | Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC) |
| C1277/77 | Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC) |
| C1278/78 | Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC) |
Factory Service Tools
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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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