Q: Engine coil was changed light is back on

asked by on

a engine coil #3 was changed 2 months ago, same code came back

My car has 79000 miles.

This may be a result of another ignition coil failing. Ignition coils are coated with a varnish-like insulation that becomes brittle over time after being stretched then contracted repeatedly The insulation develops small fractures that open when heated and close when cooled. When open, they allow shorting of coil windings and decrease or eliminate the coil’s ability to function. I would recommend having an expert from YourMechanic come to your location to take a look at your vehicle to properly diagnose your ignition system.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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. Engine coil was changed light is back 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: I've replaced the power steering pump and bled the system, but I continue to get leakage at top of the reservoir.What causes fluid

Hi there. Usually when the power steering reservoir is leaking, it is due to a seal or gasket being damaged or the cap is not properly installed. Unfortunately, this is usually a situation that will require you to replace the...

Q: why does the mouse pad that also controls the car system stop working most times?

Problems with the touchpad are occasionally reported on Mercedes Benz models and other cars as well. The touchpad membrane is probably just defective but there could be additional issues as well if the unit is not even powering on. We...

Q: Car will run for 30 min then die and will have no spark

Hello there. Many potential issues can cause your 1999 Chrysler Town & Country to shut off after 30 minutes. You have done well in replacing the plugs, wires, and coil pack as these are likely culprits. The most common...

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...
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...
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.