Skip the auto shop - Our mechanics make house calls

Q: EPC doesn't turn off

asked by on

After my car sits in the hot sun all day my EPC comes on. The car lugs, and I have to pull over, turn the car off and then start it a few times before it will stop. Sometimes it does not go off. I had the turbo replaced by the dealer, and it didn't help at all. Can you please guide me into the right direction?

A: Hello. The EPC (electronic power control) c...

Hello. The EPC (electronic power control) can cause your vehicle to go into what most technicians call a "creep mode." What it’s doing is limiting the amount of throttle that can be applied to the engine in order not cause any harm to the engine. If your engine is working fine, I am inclined to say it is the module itself that has failed. Have you attempted to pull any additional codes from the vehicle? The EPC may be triggered by more serious issues going on with the vehicle. Porche and VW are both a little notorious for their electrical issues when it gets hot. If you need help having this checked, a certified technician from YourMechanic can diagnose the EPC light in person in order to have it corrected.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: 2001 Mercedes Benz E500 will not crank or start

It sounds like your Mercedes Benz E500 may have a starter issue. If everything works as far as the radio and lights go, the battery is most likely performing as it should. If the battery is okay and the starter...

Q: key turns and starts without the ignition on, making the power glass not to work and ac, not working,

You might have a power relay that is not working, or you may have a bad EIS (electronic ignition switch) The ignition switch has several different circuits so it doesn't overload when you turn it on. When one circuit fails,...

Q: Belt or tensioner squeaking.

This issue could be either part or the need to replace both. The belt if worn could cause the noise. The tensioner may not provide enough tension and could be the problem/. If the tensioner is bad then it is...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.