Electronic Power Control (EPC)
It was very surprising to discover how many thousands if not millions of
car owners out there, have no idea exactly what Electronic Power Control (EPC) is. Yet most of them would like to know what the Electronic Power Control (EPC) circuit really does , more
especially the Volkswagen,
Audi, Seat and Soda owners.
Considering they've been plagued by the Electronic Power Control (EPC) light, limp mode, DTC errors and poor engine performance to the point of frustration and panic for a number of years. Nobody seems to be able to give them good advice or practical guidance; and in many cases not even the Volkswagen, Audi, Seat and Skoda agents can.
Leaving VW owners confounded, disappointed and disillusioned by their choice in cars, which results in so many car owners swearing, never to invest in VW brands ever again.
Unscrupulous motor mechanics tend to take advantage of these situations, recommending that the car owner brings their car to them as soon as possible before damage occurs to the engine. Whereas in fact, the Electronic Power Control (EPC) is a safety circuit designed to prevent damage to the engine.
When the Electronic Power Control (EPC) mode does engage, it can and often does affect the car's stability and cruise control and torque circuit giving the impression there is a lot more wrong than there actually is.
Since the Electronic Power Control (EPC) is "yellow" and not red, it acts more as an advisory light rather than a warning light, even though everybody tends to call it a warning light. A flashing amber light is considered a "warning signal" but still doesn't have the danger status of "red warning light".
Technically the "yellow" Electronic Power Control (EPC) light is in fact amber which is a blend between orange and yellow. Car dashboard light colours can be roughly divided into three categories.
Warning lights are Red in colour. Advisory lights are amber in colour and information lights are generally either white, green or blue in colour. Having said that, its simple to understand that amber implies that you should keep an eye on, or be prepared for either a reduction in power or interruption to power.
Hence, Amber lights are used as Indicator lights (flashers) on cars for the turn signal and hazards. Amber lights are also used by roadside breakdown vehicles to alert drivers. An amber traffic light is generally considered a cautionary light, signalling readiness to stop. Much like an amber traffic light does.
Now that you know what the colours of the lights imply, allow me to give you the low-down on Electronic Power Control (EPC) itself. EPC is an acronym and it is the official abbreviation for Electronic Power Control.
Electronic Power Control is an embeded system, specifically designed into electronic circuits that permits it be part of a larger electro-mechanical system. An Electronic Power Control system can also simply be described as a self-contained "feedback" circuit.
It can even be further explained, as a microprocessor based electronic circuit -or a computer if you like- that alters its output bias based on its inputs. Its "status quo" or current baseline is taken as a reference point and the objective is to control its operation within its predetermined parameters, and as close as possible to the said baseline, based on the signals from its inputs.
Should any of these inputs, that predominantly come from sensors fail, for whatsoever reason, the computer circuit wouldn't be unable to complete its processes and would either enter into a "compensatory state", a "warning state" or an "error state". But more about this later!
The Electronic Power Control circuit has become standard equipment as part of the OBD-II (On-board Diagnostics 2) system in all modern day cars, manufactured since 1996. The Electronic Power Control is an integral part of every computerized ignition and engine management system, embedded into the ECU (elcectronic computer unit).
The Electronic Power Control (EPC) dashboard advisory light is also part of this system and is normally activated by errors in the vehicle's torque circuit but not exclusively. The Electronic Power Control (EPC) light is actually a "new" addition to the plethora of light on the more modern vehicle's dashboards, a light that gives any driver a sense of despair when it turns on.
But more about that later ...
However, since a full blown explanation is outside the scope of a single blog-post, it is imperative that you need to read every blog installment or the entire blog to get the full Electronic Power Control (EPC) picture.
Considering they've been plagued by the Electronic Power Control (EPC) light, limp mode, DTC errors and poor engine performance to the point of frustration and panic for a number of years. Nobody seems to be able to give them good advice or practical guidance; and in many cases not even the Volkswagen, Audi, Seat and Skoda agents can.
Leaving VW owners confounded, disappointed and disillusioned by their choice in cars, which results in so many car owners swearing, never to invest in VW brands ever again.
Unscrupulous motor mechanics tend to take advantage of these situations, recommending that the car owner brings their car to them as soon as possible before damage occurs to the engine. Whereas in fact, the Electronic Power Control (EPC) is a safety circuit designed to prevent damage to the engine.
When the Electronic Power Control (EPC) mode does engage, it can and often does affect the car's stability and cruise control and torque circuit giving the impression there is a lot more wrong than there actually is.
Since the Electronic Power Control (EPC) is "yellow" and not red, it acts more as an advisory light rather than a warning light, even though everybody tends to call it a warning light. A flashing amber light is considered a "warning signal" but still doesn't have the danger status of "red warning light".
Technically the "yellow" Electronic Power Control (EPC) light is in fact amber which is a blend between orange and yellow. Car dashboard light colours can be roughly divided into three categories.
Warning lights are Red in colour. Advisory lights are amber in colour and information lights are generally either white, green or blue in colour. Having said that, its simple to understand that amber implies that you should keep an eye on, or be prepared for either a reduction in power or interruption to power.
Hence, Amber lights are used as Indicator lights (flashers) on cars for the turn signal and hazards. Amber lights are also used by roadside breakdown vehicles to alert drivers. An amber traffic light is generally considered a cautionary light, signalling readiness to stop. Much like an amber traffic light does.
Now that you know what the colours of the lights imply, allow me to give you the low-down on Electronic Power Control (EPC) itself. EPC is an acronym and it is the official abbreviation for Electronic Power Control.
Electronic Power Control is an embeded system, specifically designed into electronic circuits that permits it be part of a larger electro-mechanical system. An Electronic Power Control system can also simply be described as a self-contained "feedback" circuit.
It can even be further explained, as a microprocessor based electronic circuit -or a computer if you like- that alters its output bias based on its inputs. Its "status quo" or current baseline is taken as a reference point and the objective is to control its operation within its predetermined parameters, and as close as possible to the said baseline, based on the signals from its inputs.
Should any of these inputs, that predominantly come from sensors fail, for whatsoever reason, the computer circuit wouldn't be unable to complete its processes and would either enter into a "compensatory state", a "warning state" or an "error state". But more about this later!
The Electronic Power Control circuit has become standard equipment as part of the OBD-II (On-board Diagnostics 2) system in all modern day cars, manufactured since 1996. The Electronic Power Control is an integral part of every computerized ignition and engine management system, embedded into the ECU (elcectronic computer unit).
The Electronic Power Control (EPC) dashboard advisory light is also part of this system and is normally activated by errors in the vehicle's torque circuit but not exclusively. The Electronic Power Control (EPC) light is actually a "new" addition to the plethora of light on the more modern vehicle's dashboards, a light that gives any driver a sense of despair when it turns on.
But more about that later ...
However, since a full blown explanation is outside the scope of a single blog-post, it is imperative that you need to read every blog installment or the entire blog to get the full Electronic Power Control (EPC) picture.
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