Skip the auto shop - Our mechanics make house calls

Q: Engine and low trac lights come on

asked by on

I have a recurring problem with my Check Engine Light. The dealership replaced my spark plugs and the module. After all that, the light still comes on! What is causing this and how can I get it fixed?

Hello. There are several things that could cause the Check Engine Light to come on after getting the spark plugs replaced by the dealership.

  • If the Check Engine Light never turned off after the original repair was completed, it is possible that the Check Engine Light was never turned off.

  • It is also possible that more than one problem existed when the spark plugs were replaced and additional repairs are necessary.

  • If the Check Engine Light was turned off and came back on shortly after the repair, you could have an intermittent condition and these can be difficult to diagnose. Intermittent conditions may need to worsen before any certified technician will be able to pinpoint the problem.

Contact a certified technician, like one from YourMechanic, who will be able to pinpoint why your Check Engine Light is on.

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: I have just changed the compressor ! I have a receiver dryer rube and not sure wher it goes ?

The dryer for your vehicle's a/c system comes in the form of a replaceable desiccant cartridge. To remove and replace the old cartridge, which is a critical task whenever you have opened the a/c system to the atmosphere, you can...

Q: Car starts and then dies

Hello. If I am not mistaken, that vehicle does not use a carburetor for the fuel system, that does not really matter though. If your vehicle is only starting when you add some sort of fuel, and not on it's...

Q: intake leak and sputters and dies

This could be a variety of issues causing the rough idling. The oil leak at the intake suggests you may have a blown head gasket. Has the car gotten abnormally hot? If so, this could explain the leak and would...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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.