Daihatsu Sirion Intermittent Power Steering Loss

The issue is confirmed when the dashboard EPS warning light illuminates, often accompanied by a sudden increase in steering effort. To verify the symptom, observe if the failure occurs during engine startup, disappears after an ignition cycle, or resolves when the steering wheel is moved slightly during crank. Confirm the presence of EPS fault codes using a diagnostic scanner capable of reading the steering module (e.g., C1552, C1554, C1555, or C1557).

Sources