Question about 2001 Volkswagen Beetle

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I have codes po 638, 121, 221 does all these mean that i need a throttle body, also epc light comes on . with pwer loss , turn car back on you have power at first with all codes but i n a short time light comes back on.

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I believe it's all related to youe brake light switch. There is a recall on it. It sticks and causes the epc kight to flash, also causing your other stated issues. If recall working has been done, buy the dealer switch. It's easy to replace.

Posted on Jul 27, 2009

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1 Answer

WHAT DOES THE EPC LIGHT MEAN IF IT COMES ON


epc means electronic power control most times its a throttle body issue the volkswagons have and electric gas pedal and same on the throttle body

Jun 02, 2016 | Cars & Trucks

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I replaced the throttle body in my 2002 Jetta V6 but the EPC code wont reset with a scanner


This can be a hard one need to know if all the tubes and vacuum lines are good including the pcv valve tubes and system if these are in poor repair you may not get the throttle body to stay programmed flashing the ECM won't help unless some one flashed it to the wrong programming before.

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EPC light is not coming on when I turn on the ignition in my 2006 Jetta


Well the EPC light is for electronic power or pedal control, which refers to the gas pedal and throttle body. The light can come on for a number of reasons including issues with the fly-by-wire gas pedal, throttle body, cruise control, brake light switch, and others.
Not coming on when you turn the key on for a test could be a blown fuse for the computer since the EPC light is not on a fuse. You may have to check them all to make sure. Of course the bulb could be out too.

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Car bogs down epc light comes on, then goes off car runs then normally, I replaced mass air flow, front and back 02 sensors, but continues to bog and epc light goes on and off


epc is short for electronic pedal control, the throttle is controlled by an electric motor and has two angle sensors in the throttle body. the pedal it self has two sensors as well, sometimes after a battery replacement or replacement of certain parts (ecm throttle body pedal controls) the control modules need to be reset or "relearned" to one another. the dealer or independent shop with correct softwear can do this, if problem persists possible bad throttle body pedal sensors or ecm (engine control module)

Aug 07, 2011 | Volkswagen Beetle Cars & Trucks

2 Answers

Epc light on


EPC means Electronic Power Control.

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/

Jan 12, 2011 | 2005 Volkswagen Phaeton

1 Answer

ETC light is on, engine has problems starting.


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.

Nov 13, 2010 | 2003 Volkswagen New Beetle Convertible

3 Answers

The ingnition won`t start, how dow I by pass the EPC and start, the car was running fine but started not switching, when turning the key nothing happens, what is the EPC for? and how do I fix it with out...


Your EPC stands for "Electronic Power Control" and without it (bypassing it, as you stated), you will not be going anywhere in your car. The car MUST have the EPC on/enabled to run, as I have been told. The VW Passat does not have a throttle cable... it is controlled electronically. The EPC light means something is wrong in the drive-by-wire path, the "gas pedal" potentiometers or the electric motor-controlled throttle body, etc. You will need to take it to a mechanic/repair shop that is knowledgable in foreign automobiles (especially VW's) and has the appropriate tools and equipment to read any "codes" being kicked out by the computer.

I have a 2001 New Passat with the EPC light coming on randomly and it will idle high but next time I start the car it goes away. I think you will have to take it in to the dealer.

Jun 04, 2009 | 2003 Volkswagen Passat

1 Answer

2000 new beetle 1.8Ltr Shuts off


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).

Thanks for using FixYa - a FixYa rating is appreciated!!

Feb 08, 2009 | 2000 Volkswagen Beetle

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