Electronic Power Control (EPC) warning lamp -K132- (for electronic throttle), function: Notes

WARNING: This page is about a different car, the 2003 Audi S6 and 2002 Audi S6. However, it is still accessible from the selected car via links, so may be relevant.

"EPC" is an abbreviation for Electronic Power Control and refers to the electronic throttle control system.

Location of the EPC warning lamp

Fig 1: Locating Electronic Power Control (EPC) Warning Lamp

Courtesy of AUDI OF AMERICA, INC.

The engine control module switches on the EPC lamp when the ignition is switched on.

After the engine has been started the engine control module tests all parts for malfunctions relating to the electronic throttle control system.

During the test sequence the EPC warning lamp illuminates for about 3 seconds. If this check reveals a malfunction, the warning light remains illuminated.

If a malfunction is detected in the electronic throttle system while the engine is running, the engine control module switches on the EPC warning lamp. At the same time there is an entry into the Diagnostic Trouble Code (DTC) memory of the engine control module (these DTCs are marked in the DTC table).