Q: My Check Engine Light came on 2 days after we replaced our battery

asked by on

Battery was bad so bought a new one 2 days after the check engine light came on

My car has 59789 miles.
My car has an automatic transmission.

The Check Engine Light may or may not be related to the battery change on any late-model car like this one - even a simple operation like changing a battery is not so simple. There are a number of settings and values in your cars control systems that are retained only by a very small amount of battery power while everything on the car is shut off. Disconnecting the battery for just enough time to replace it can cause the controllers to lose these values and it may take some time to re-learn some of them.

You need to read the codes on the car and if the code is for a throttle position sensor or an improper voltage, it may be because of your battery replacement. Other codes for "hard"failures may be present that have nothing to do with your battery replacement. To be sure, you can erase the codes and see if they re-occur. If the Check Engine Light does not come back, you’re in the clear. If the code is due to something that is unrelated, it will be back. But sometimes it may take a couple of days of driving. By contacting YourMechanic, you can have a technician come to your home or office with the proper equipment to read the codes and interpret them for you.

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. My Check Engine Light came on 2 days after we replaced our battery

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: Check engine light just came on.

The P0320 trouble code could very well indicate a bad camshaft sensor. The pinpoint test should be performed before replacing the sensor. If you need help with diagnosis, contact a mechanic for a diagnosis of the Check Engine Light....

Q: The RPM doesn't exceed 3 on the dash board when idling, and rpm doesn't exceed 2 when in motion. What is the cause?

Hi There, It sounds like you may have a problem with your transmission causing it to go into limp mode which will not allow the car to exceed a specific RPM or speed when driving. The transmission control module will...

Q: Engine stops and jerks while driving

Hi There, Your car has a small purge valve called a purge solenoid in the Evaporative Emissions system that controls the venting of fumes from the fuel tank as these fumes build up inside, particularly when you are refueling the...

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...
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...
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...