The eps light came on and the power steering stopped working. i turned off the engine, turned it back on and then it was fine...what happened?

eps ???? spell it out electric power steering (EPS) system ? The system uses the body control module (BCM), power steering control module (PSCM), torque sensor, discrete battery voltage supply circuit, EPS motor, serial data bus, and the instrument panel cluster (IPC) message center to perform the system functions. The PSCM, torque sensor, nor the EPS motor are serviced separately from each other or from the steering column. Ant EPS components diagnosed to be malfunctioning requires replacement of the steering column assembly, also known as the EPS assembly.
The scan tool won't communicate with what ? The power steering control module , BCM or PCM/ECM .

ELECTRIC POWER STEERING (EPS)
The TSX uses Electric Power Steering (EPS) which regulates steering via a computer-actuated electric motor. With the computer-controlled system, advanced algorithms built into the operating software allow for continuous fine-tuning of the steering assist forces so that minimal force is required at low speeds- such as when parking or maneuvering. Conversely, progressively higher steering effort is generated at higher speeds (such as when driving on the freeway) to deliver a sport-minded driving experience.
The EPS system found in the TSX is an evolution of an earlier EPS system found on the Acura NSX supercar. Its key features and advantages include:

• The EPS system reduces the steering effort at low speeds, improving agility and ease of effort when parking or maneuvering in tight areas
• Rigidity of the steering mount is higher, which allows a more precise and "connected" feel during high-speed maneuvers (such as during lane changes or when on winding mountain roads)
• The EPS steering assist incorporates computer algorithms based on vehicle speed rather than engine speed, allowing TSX engineers the flexibility of tailoring the steering feel to match actual driving conditions- especially high-speed driving. The EPS steering algorithms incorporate steering assist changes for every 0.6 mph.
• The EPS system is different (and uniquely tuned) for each of the TSX models: 2.4L I-4 sedan, 3.5L V-6 sedan, and the new Sport Wagon.
• EPS employs a sporty, 13.5:1 steering ratio which further improves performance driving agility
• In its evolution from the original NSX system, the TSX's EPS system uses a significantly more powerful electric motor teamed with a far more sophisticated microprocessor
• By eliminating the conventional power steering pump assembly, EPS uses less engine power which improves acceleration and fuel efficiency

it is an electric pump without a pulley or belt or fluid apparently

check all fuse in both fuse boxes.
power sensor?
electronic power steering failure.
you can:
1: get it fixed. (any ASE shop would be happy to help.)
2: read the FSM and learn the tests to find the cause.
3: and scan the PCM to see what EPS failures are happening,
and post those.
or look them up in the FSM to see the tests.

What pump are you checking an fluid level ? Your vehicle has electric power steering an has no pump or fluid .
Your best bet , take it to a GM dealer , had recall on parts of the EPS , electric power steering (EPS) system .
The electric power steering (EPS) system reduces the amount of effort needed to steer the vehicle. The system uses the body control module (BCM), power steering control module (PSCM), torque sensor, discrete battery voltage supply circuit, EPS motor, serial data bus, and the instrument panel cluster (IPC) message center to perform the system functions. The PSCM, torque sensor, not the EPS motor are serviced separately from each other or from the steering column. Any EPS components diagnosed to be malfunctioning requires replacement of the steering column assembly, also known as the EPS assembly.

EPS is Electronic Power Steering.

When the light comes on, it is a warning that the Electronic Power Steering system is having a problem.

The increased force you have to use, is because the EPS is not assisting you as much as it was before, if at all.

Here is a link to a video explaining the basic operation of the electronics at youtube.

The computer more than likely needs to be reset. No promises but look in your owners Manuel and it should tell you how to reset your cars computer

Its the Electronic Power Steering. When it lights up, let the power steering unit be check in a local repair shop.

The other system is hydraulic power steering - which is driven from a pump through a belt system. EPS is driven by the battery / alternator. Low battery or faulty alternator can cause the EPS to stop working properly.

EPS stands for Electric Power Steering. Hyundais have electric power steering instead of belt driven pumps. But they still require power steering fluid, Check the fluid to see if it is low. That would trigger the signal to come on.

My EPS on my mitsubishi colt 2006 stopped working about 8 months now, I changed the electronic box,but it started to work for ten minutes and then stopped.I carried it by some electricians and they put the computer on it, but it is not getting through.Could someone lend some assistance!!!!!!!!!!!!!!!!!!!!!!!!1

check belts on engine one is missing or broken