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Computers are taking over everything on your vehicle. Traditionally, components like the steering, the parking brake, and the gas pedal used to require mechanical linkages. Nowadays, computers and electric motors can take care of all of these functions and more.
Electronic Power Control (EPC) is a computerized ignition and engine management system. It is used by other systems on the car such as stability and cruise control. Any faults with the EPC will likely disable other functions on your vehicle so it is important to keep the system maintained and functional. A warning light on the dash will let you know when an issue has been detected in the EPC system.
What the EPC light means
Since the EPC is used on multiple other systems on the vehicle, it is likely that other warning lights will be illuminated on the dash as well. Typically, the stability control and cruise control will be disabled and their respective lights will be illuminated as well. The check engine light may also come on to show that the engine itself isn't operating at normal efficiency. To try and protect the engine, the computer can limit the vehicle's throttle and the car may feel sluggish as a result.
You will need to get the car scanned for trouble codes that can be used to identify the problem. Once repairs have been done and the codes cleared, everything should return to normal.
Is it safe to drive with the EPC light on?
Like the check engine light, the severity of the problem can vary greatly. If this light comes on, you should have the car checked out as soon as possible to prevent any significant damage from occurring. If your vehicle is limiting your throttle to protect the engine, you should only use the vehicle to take it to get repaired.
Common issues with your car's EPC are malfunctioning sensors which just need to be replaced. However, the issue can be more serious so don't hesitate and have your vehicle checked out as soon as possible.
The mechanic should have run a diagnostic on it to pull up error codes from the ECM. There are a bunch of faults that could cause the EPC light to go on - anything from a bad crank position sensor to a faulty brake light switch. If it's affecting how it runs, logically it will be a sensor on the engine or a module that runs it (transmission, ignition or engine management) Get it back to the workshop and have the diagnostic performed.
Probably 'Electronic Power Control'. Is your car a VW?
It's basically a sensor problem telling you that something is amiss. There's many sensors in the engine and also ABS. One of the sensors is indicating there's a fault on that particular system.
If the engine seems to be on reduced power it could be a throttle problem. Also check your brake light switch.
Year make and model ??
I would have the engine computer checked for trouble codes first.
When there is an engine problem, the other warning lights will come on because those systems use the engine to function.
When was the last time you changed your Air filter( A dirty filter can put MAF sensor out of range). How about the fuel filter (Fuel starvation). These filters should be changed every 30,000 miles . It is normal for all of the dash lights to come on if the engine stops running. Is the Jetta a Diesel or Gas. Perform The OBDII scan again to see if current faults are present. Do the cheapest fixes first. Also check oil often. The low oil sensor will trigger engine shut down if more than 1 quart low
It sounds as if your vehicle may have severe water damage to the engine. The engine sensors on the golf are suseptable to water damage and can result in epc light that you are seeing on your dash, or so i was told by VW. I replaced all the sensors, alternator and the computer on my original engine, but this action didnt fix the problem. So i bit the bullet and replaced the engine, and haven't had a problem since. If you do the labor yourself it can be done as cheap as $4000. I hope this helps mate.
When this light comes on, yopu could have such a sudden power loss.
However, before visiting a workshop for help, do the following basic checks:
No air leak into the intake system.
Ensure that all the electrical socket in the engine management system are well fitted, no loose contacts.
This light can be caused throttle valve malfunction, MAF, brake lights,
EVAP , 02 sensor, secondary air pump.
I
suggest you visit a competent dealer or independent shop for help. They will scan the EPC and run 'Throttle Body Adaption'. and diagnos the problem. Ask for a garage with a 'Ross Tech VAG-COM' or a ' VW diagnostics scanner.'
See here for a shop near you : http://www.iatn.net/shopfinder/
EPC= electronic pedal control it is a sensor and is located in front of the brake pedal . Depress brake with one hand ,the sensor with the other and release fast. this should disengauge the EPC lock listen for a thunk made by the EPC lock disengaging.
Go to auto zone. They will use a code reader to help you find exact component or components having errors. If its not the EPC.
it sounds like your mass air sensor or the throttle control sensor may be bad. Your gas and air may not be mixing properly thus causing your car to sputter, hesitate, and idle rough. It could be some other thinks like a bad plug or wire etc. Good Luck hope this helps. Please rate me if this helps thank you.
The EPC (Electronic Pedal Control) is the "fly by wire" system that controls the throttle, it took the place of the cable that went from the gas pedal to the throttle body on VW. If this light is on and there is also a P0102, MAF (Mass Air Flow) related code stored in the vehicle's computer, the EPC may be caused indirectly from a faulty MAF. If the EPC is on and there is no other codes stored, it could be a faulty electronic throttle body or need to be re-programmed. The vehicle's computer must recognoze the throttle body so when replacing it with new or used it will need to be programmed at the dealer. Recently I replaced a MAF (a common problem on VW's) on a VW Golf and when I cleared the code the EPC went off as well.
Check the engine codes, and replace or repair the faulty sensor (most likely the MAF sensor).
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