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?
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: Q: Timing belt needs to be replaced

Your engine is an interference motor and will get damaged if the belt breaks. You can contact another mechanic, like one from YourMechanic, who can check and replace the timing belt for you.

Q: Hood sensor

Such a system is very limited in extent, and works using simple components. The Factory Service Manual for this vehicle will have a test protocol for the system. In addition, if the work was done at a Mercedes Benz dealership,...

Q: What is an ECM-relay and where is it located?

Hey there. The ECM relay on this vehicle is called an auto shutdown relay and is located in the engine compartment integrated power module control box. The P0052 code you are getting is for the passenger side O2 sensor closest...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...