Skip the auto shop - Our mechanics make house calls

Q: Check Engine Light came on

asked by on

Car had rough idle and sputters when driven. I scanned it and got 3 error codes in the following order: 1) P0305 2) P0496 3) P0305.
My car has an automatic transmission.

You need to have the purge valve checked to see if it is flowing vapor from the fuel tank when the engine is at idle. The flow will cause the engine to run too rich and can cause the cylinder number 5 misfire. Once the purge valve is fixed then you can see if the misfire is gone or if it needs additional attention.

I’d recommend having the vehicle looked at by a certified mechanic, they will be able to diagnose these trouble codes and your rich running symptoms firsthand. Once this assessment is done, a proper and accurate repair can be made to get your vehicle running nicely again.

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
  1. Home
  2. Questions
  3. Check Engine Light came on

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: how do you make the side mirriors not dip down when car is put in reverse

Hi there: The mirrors shifting downward is an automatic function that is programmed in the ECU by the manufacturer. It can't be removed unless you remove the electrical function of the mirrors which will disable the motor and automatic adjustment...

Q: Service Park Assist light came on while driving and the car disabled me from pushing on the gas. 2009 Buick Enclave

Hello - first task is to get the problem codes that may or may not be illuminating the Check Engine light. The Parking Assist issue is limiting engine power to avoid big power surges while parking. This may require service...

Q: Cam shaft sensor cost 2009 g37 infinity sedan

Hi...I will help you with this. Your vehicle has two separate camshaft position sensors. Each sensor would have to be directly tested using an automotive scope (like an oscilloscope), or a manufacturer specific code scanner (attached to the OBD-II port...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
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...