Skip the auto shop - Our mechanics make house calls

Q: Check engine light on

asked by on

Brought to autozone for free diagnosis. Evap code. Told could be 3 different parts. I changed obvious one 1st. Gas cap. Still on. They said it's trial & error for the other 2 parts. Could be either one. Each one costs $99.00 Took to mechanic said charge $129 to find possible leak..that could be a pinhole in a hose. Sounds like a guessing game to me. Any suggestions would be appreciated. Thank you.

My car has 181000 miles.
My car has an automatic transmission.

Hi there. Quite often the free inspection from this company results in more problems than solutions. When these companies complete a ’scan’ they really don’t apply any mechanical diagnostic knowledge in their process. The fact is when an OBD-II code is triggered, it will indicate which one of the EVAC system components is faulty. You have to remember, these parts companies are in business to sell auto parts; possibly all of them until you eventually "through trial and error" find the right one. This is NOT the right way to diagnose a problem. Please contact a professional mobile mechanic from YourMechanic.com to come to your location and complete a check engine light inspection. This will allow us to download all the stored error codes and PINPOINT the source of the error and recommend the right repair - without the guess work.

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: Power steering fluid leak

Hello. It sounds like you may have a bad hose connected to the high side pressure port on the power steering pump. Over time, the crimped hoses will start to leak where the cramping is. I would recommend having a...

Q: When AC is on I hear a beeping noise

Hello. Small beeps when the AC is on can be caused by dirty or faulty AC components. A common source of a beeping or chirping sound when the AC is turned on is a dirty or faulty evaporator case. The...

Q: What items can be customized in the multi-information display?

While some of the items displayed can’t be changed (your primary odometer reading, for instance), many others can be customized. Here’s what you can change: Maintenance Minder (reset or leave alone) Trip meter (reset or change from elapsed time,...

Related articles

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...
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.