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.
2012 Toyota Matrix Base, Automatic TransFACTORY OEM SERVICE PROCEDURE
Power Steering System
POWER STEERING SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| C1511 | Torque Sensor Circuit Malfunction |
| C1512 | Torque Sensor Circuit Malfunction |
| C1513 | Torque Sensor Circuit Malfunction |
| C1514 | Torque Sensor Power Supply Abnormal |
| C1515 | Torque Sensor Zero Point Adjustment Undone |
| C1516 | Torque Sensor Zero Point Adjustment Incomplete |
| C1517 | Torque Hold Abnormal |
| C1521 | Motor Circuit Malfunction |
| C1522 | Motor Circuit Malfunction |
| C1523 | Motor Circuit Malfunction |
| C1524 | Motor Circuit Malfunction |
| C1525 | Rotation Angle Sensor Initialization Undone |
| C1526 | Rotation Angle Sensor Initialization Incomplete |
| C1528 | Motor Rotation Angle Sensor Malfunction |
| C1531 | ECU Malfunction |
| C1532 | ECU Malfunction |
| C1533 | ECU Malfunction |
| C1534 | ECU Malfunction |
| C1541 | Vehicle Speed Signal Malfunction |
| C1551 | IG Power Supply Voltage Malfunction |
| C1552 | PIG Power Supply Voltage Malfunction |
| C1554 | Power Supply Relay Failure |
| C1555 | Motor Relay Welding Failure |
| C1581 | Assist Map Number Un-Writing |
| C1582 | Assist Map Number Mismatch |
| U0100 | Lost Communication with ECM / PCM "A" |
| U0129 | Lost Communication with Brake System Control Module |
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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