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?

A: Hello. There are several things that could ...

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: My truck runs rough and misfires on 1 and 7 I have put coil pack wires and plugs and fuel filter

Engine misfires can be caused by a list of problems, but there are a few suspects that occur more than others. The primary culprits are simple – spark or fuel – usually manifesting in spark plugs, plug wires, the coil(s)...

Q: Car makes a "humming" noise when I try to start it

Hello. If you were to tap anywhere, it would probably be the starter solenoid, which has the main power wire attached to it, although it is not likely that tapping the starter solenoid will start the car. It sounds...

Q: Motor blown

No. The engine in your Chevrolet is a 4 cylinder Ecotec. You'll have to find the same engine. There are two different options to look for when searching for a replacement. You have to look to see if your engine...

Related articles

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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...