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 MANUALSTOYOTA2010YARIS 4D SEDAN, STANDARDREPAIR AND DIAGNOSISSTEERINGMANUAL STEERINGPOWER STEERING (DIAGNOSTIC CODES & CIRCUIT TESTS)
2010 Toyota Yaris 4D Sedan, Standard
Power Steering (Diagnostic Codes & Circuit Tests)
2010 Toyota Yaris 4D Sedan, StandardSECTION Power Steering (Diagnostic Codes & Circuit Tests)
- Power Steering System
- On-Vehicle Inspection
- DTC C1511/11: Torque Sensor 1 Malfunction; DTC C1512/12: Torque Sensor Circuit Malfunction; DTC C1513/13: Torque Sensor Circuit Malfunction; DTC C1514/14: Torque Sensor Power Source Circuit Malfunction; DTC C1517/17: Torque Sensor Hold Malfunction
- DTC C1515/15: Torque Sensor Zero Point Adjustment is not Initialized
- DTC C1516/16: Torque Sensor Zero Point Adjustment Incomplete
- DTC C1524/24: Motor Circuit Malfunction
- DTC C1531/31: EPS ECU Circuit Malfunction; DTC C1532/32: EPS ECU Circuit Malfunction; DTC C1533/33: EPS ECU Circuit Malfunction; DTC C1534/34: EPS ECU Circuit Malfunction; DTC C1535/35: Steering Wheel Location Data Error
- DTC C1541/41: Speed Sensor Malfunction; DTC C1542/42: Speed Sensor Malfunction; DTC C1571/71: Speed Sensor Malfunction (Test Mode DTC)
- DTC C1551/51: IG Power Supply Voltage Malfunction
- DTC C1552/52: PIG Power Source Circuit; DTC C1553/53: When Resetting Voltage, Vehicle is Being Driven; DTC C1554/54: EPS Relay Circuit; DTC C1555/55: EPS Motor Relay Circuit
- DTC C1581/81: Assist Map Un-Writing
- DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module
- Circuit Test
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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.