Skip the auto shop - Our mechanics make house calls

Q: After oil change, engine stutters, warning lights on

asked by on

Just yesterday I got an oil change. Since then, the EPC light is blinking on/off and the engine is stuttering. It continually feels like it’s going to quit. It was a local corner-type kind of oil-change shop. Do you think they might have used the wrong kind of oil during the oil change yesterday or is this an unrelated matter?

A: Hello. EPC stands for electronic power cont...

Hello. EPC stands for electronic power control, and the light is seen when there is a fault with the throttle body, traction control, throttle pedal, or cruise control systems. It is flashing because the car's computer can not compensate for whatever fault is present. Many different things can cause the EPC light to come on but the most common would be an issue with the mass air flow sensor, throttle or pedal sensor, or a traction control. It is fairly unlikely that the oil change and the EPC light are related.

I recommend having your vehicle scanned for any error codes. A qualified technician will scan the engine control unit for what code is present and from there be able to diagnose the fault and perform any repairs required. A certified mobile mechanic from YourMechanic can provide this inspection at your home or office.

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・Save up to 30%

Get a quote

What others are asking

Q: EPC keeping car from starting

The EPC light is indicating a fault in the electronic throttle control system. The best way to narrow down the issue is to read out the fault codes in the engine management system; there could be issues with the throttle...

Q: What would you consider as a tune up?

A car is a mechanical device that wears out in a predictable pattern. Therefore, tune-ups are NOT determined by personal predilection. If someone tells you, "In my opinion, a tune up consists of....", run for the exits! In other words,...

Q: Keyless door on hatchback not working.

Hello, If the hatchback won't open with the remote or the interior release button, the most likely problem is in the rear hatch unlock solenoid. I would check all the fuses first, since it might have a dedicated fuse. If...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
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.