Q: After engine replacement, Service Engine light on

asked by on

Unfortunately, I had to have my car’s engine replaced. When I picked up my car, the service engine light was on, so I returned to the auto repair shop and they replaced the oxygen sensor. For a couple of days the light went off, but now it is on again and won’t go off. What needs to be done to fix this warning light problem?

The malfunction indicator lamp illuminates at the sign of an error in a number of the vehicles systems. The trouble code must be read every time to see if the same or a new code has popped up, then the technician can follow through with the diagnosis. The issue may or may not be related to the engine swap. It is possible that you have a faulty control units, but this is uncommon. If you would like to have this scoped out, a certified pro from YourMechanic can come to your car’s location to thoroughly diagnose the Check Engine Light and have this addressed appropriately.

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. After engine replacement, Service Engine light 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: Engine seized in 2005 Acura TL

Hi. An engine replacement in your vehicle will cost between $2,000 and $4,000. This Depends on where the engine is installed and where the replacement engine is ordered from. The engine itself can range from $500 to $2,000. The labor...

Q: Battery & airbag lights come on and SUV won't start

If you said the Check Engine Light came on, I would recommend starting there. Have a qualified mechanic pull the codes from your Chevrolet Tracker using an OBD2 scanner. Any codes found will lead the mechanic in the right direction...

Q: how many o2 sensors does my vehicle have and where are they located?

Your vehicle uses two oxygen sensors. According to Alldata, there should be one oxygen sensor that is accessed just behind the rear cylinder head, just behind where the coils mount to the valve cover. The other oxygen sensor is mounted...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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.