Q: check engine light and car shuddering

asked by on

2009 volkeswagen jetta GLI

Codes: P2279, p0171, p2015, p0300 p0301, p0302, p0303, p0304

check engine light and epc light are on and the car shudders at lower speeds, first couple minutes of driving and now that it's getting colder. Also I've recently replaced the spark plugs and coil packs

My car has 125000 miles.
My car has an automatic transmission.

Hi there:

After looking into the first error code you posted, the vibration and shaking issues on your VW are most likely caused by a vacuum leak. The P2279 OBD-II code indicates that the ECU has detected a vacuum leak into the engine. This means that unmetered air is entering the engine without the engine sensing it going through the mass air flow sensor and throttle body. There are multiple engine components and sensors that might be causing this issue to occur, which is why you should have a professional mobile mechanic complete an engine is shaking or vibrating inspection first; so they can pinpoint what’s damaged.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. check engine light and car shuddering

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: Doors not unlocking when I use key fob

Hi. I'm going to assume they open when using the door lock switch. First of all, pressing the fob once only unlocks the driver's door. The fob must be pressed a second time within 5 seconds to unlock the rear...

Q: 2013 Ford Escape displays message "Engine Fault, Stop Engine"

There are many potential causes for your concern. However, there is a technical service bulletin (TSB) that lists symptoms similar to what you describe. It's TSB 15-0007 and addresses the following concerns: lack of power, loss of RPM or hesitation...

Q: My car shakes when I accelerate above 30 mph.

There are many things that can potentially cause your vehicle to shake at that speed. Some of the potential causes of this issue would include but are not limited to tires with cupping wear due to bad shocks, tires are...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.