TOYOTA issued a recall on the ECHO and PRIUS models

On certain vehicles, improper manufacturing of the Crankshaft Position Sensor body could cause engine oil to penetrate the seal and enter the sensor wiring connector. In addition, the wire harness connector may not be sufficiently attached to the locking tab of the sensor wiring connector. Engine oil inside the sensor wiring connector could cause expansion due to the heat of the engine and could deform the sensor wiring connector. In the worst case, the connector may become disconnected, which could cause the engine to stall while driving and not be able to be restarted. Correction: Dealers will replace the Crankshaft Position Sensor.