Hi my eps light is comming on and i lose power streering how do i fix it

Check the battery with a load tester
check the drive belt condition and tension
have the alternator bench tested for correct out put falling below that what is required , hence the light and the loss of assist with the steering

It cannot be fixed until the problem with the Electronic Power Steering(EPS) is properly diagnosed.
The power assist system is comprised of...

• EPS computer unit
• Warning light on the dashboard
• A connection to the OBD2 Diagnostic port in the car
• A Vehicle speed sensor
• A sensor which detects steering rotation on the input shaft of the steering rack

• An electric motor, which provides the power steering assistance to the steering rack. Unless that motor runs you will have no power assistance to your steering.

1. You will need to have the system scanned with the appropriate scan tool through the OBD port in the car. This will generate various fault codes which assist in diagnosing where the problem lies in the power steering system. It may be just a failed sensor that needs replacing or it might be a bigger problem.
2. Once the fault codes have been pulled the mechanics can diagnose the cause and make whatever repairs or parts changes may be required.
3. This is not a do it yourself exercise. You will need a mechanic who knows these Japanese electronic power steering systems and who understands the fault codes (and there are many of them on this EPS system) to diagnose the problem for you and fix whatever fault(s) has arisen.