Skip the auto shop - Our mechanics make house calls

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.

A: Hi there: After looking into the first err...

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?

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

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: When I put it in reverse it is stalling

If you car only stalls when you shift into reverse and not when you shift to any forward drive gear, then you may have an internal leak in the valve body and when you shift into reverse, the transmission is...

Q: As I drive away there is a trail of petrol/oil left behind

Hello and thank you for contacting YourMechanic. If you can see a fuel trail behind your vehicle, yes it can be dangerous to drive the vehicle, depending on where the fuel is leaking from. Check under the vehicle to see...

Q: Odometer isn't working

The odometer would need to be removed and sent out for repair or replacement. The problem is that the entire cluster would need to go to the repair shop to be fixed. I recommend having a mechanic, such as one...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...