Skip the auto shop - Our mechanics make house calls

Q: Engine light...

asked by on

So my engine light came on 2-3 weeks ago and I took it to a mechanic I had never used before and they checked it and also did a full car inspection, so they did a lot of good amount of work (Oil chance, Air filter change, etc.) Then 5 days after I got it back the engine light came back on and it was leaking gas out of intake valve/gasket and they fixed that, now 5 more days after getting it back again the engine light came back on and I was wondering what might cause that and/or I should still trust that mechanic.

My car has 70000 miles.
My car has an automatic transmission.

when your check engine light comes on, it is because your car’s controller has detected a malfunction and stored a corresponding trouble code. The technician can read the codes with a scan tool, and take the appropriate action. He then clears the code from the system and the light goes out. Even if the malfunction has not been fixed, the car has to go through two complete "drive cycles" before the light will come back on. A drive cycle begins with a cold start and requires that the car be driven long enough for it to warm up fully before it is complete. That is why, in many cases a technician can fail to repair the problem and the CEL will not return for a couple of days. Sometimes a novice technician might not know how to road test a car and check for "pending" codes to make certain the problem is solved. I can’t give you any advice about the repair without knowing what code(s) the technician found. But I can suggest that you start fresh and contact YourMechanic, who will send a technician to your home or office to read the codes and help you understand what needs to be done.

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: My 2004 Audi TT (automatic) has about 75K miles on it. For a while, I've been experiencing really harsh shifts between gears when

To begin with, you need to be sure the car has the correct fluid in the transmission and that the fluid level is correct. VW and Audi use their own unique fluid and any substitutions can cause problems. The level...

Q: Check Engine Light and air conditioning problems

The Check Engine Light illumination is most likely due to your engine having a misfire, and also getting a code to the cam sensor. If the misfire code is pointing to a particular cylinder misfiring, there could be another problem...

Q: My engine is shaking, how do I fix it? Something is also leaking from the bottom of the car.

Until you find where the oil leak is you will not make it very far before the engine seizes. Have one of our local mobile mechanics come to you and check the engine for you and pinpoint the oil leak....

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...
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.