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2001 vw beattle 2.0l.the epc lite goes on and i lost power .the codes in the car are po121

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PO121 is Throttle Position Sensor problem. Check the connections at the TPS. Check for shorts, loose or corroded connection. Make sure there is no moisture in the connection. Inspect the sensor for cracks or damage. If all looks well then replace the TPS and reset the light with a OBD2 scan tool.

Posted on May 05, 2010

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Your VW dealer will replace this switch free...

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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.

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4 Answers

What is EPC


EPC could be Engine Power Control

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